Log in

Relevant bibliographies by topics / Compression scheme / Journal articles

To see the other types of publications on this topic, follow the link: Compression scheme.

Journal articles on the topic 'Compression scheme'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Compression scheme.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Jha, Mithilesh Kumar, Brejesh Lall, and Sumantra Dutta Roy. "Statistically Matched Wavelet Based Texture Synthesis in a Compressive Sensing Framework." ISRN Signal Processing 2014 (February 17, 2014): 1–18. http://dx.doi.org/10.1155/2014/838315.

Full text

Abstract:

This paper proposes a statistically matched wavelet based textured image coding scheme for efficient representation of texture data in a compressive sensing (CS) frame work. Statistically matched wavelet based data representation causes most of the captured energy to be concentrated in the approximation subspace, while very little information remains in the detail subspace. We encode not the full-resolution statistically matched wavelet subband coefficients but only the approximation subband coefficients (LL) using standard image compression scheme like JPEG2000. The detail subband coefficient

APA, Harvard, Vancouver, ISO, and other styles

2

Gao, Jian Qiang, Shao Dong Sun, Li Kun Wang, and Ning Wang. "The Analysis on the Scheme of the Flue Gas Compressor of a 300 MW Oxy-Fuel Pulverized Coal Fired Boiler." Applied Mechanics and Materials 602-605 (August 2014): 638–41. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.638.

Full text

Abstract:

The compression of the flue gas is one of the most critical processes of CO2 recycling in oxy-fuel combustion technology. With a 300 MW Oxy-fuel pulverized coal fired boiler taken as an example of study, the selection of compressors of its flue gas compressing system is analyzed by the thermodynamic calculation. In this paper, two centrifugal compressors with the same specification are in parallel running as Scheme 1 of selection, while an axial compressor and a piston compressor are in series operation as Scheme 2 of selection. It shows that the Scheme 2 has the advantage of the energy consum

APA, Harvard, Vancouver, ISO, and other styles

3

Waleed, Muhammad, Tai-Won Um, Aftab Khan, and Ali Khan. "On the Utilization of Reversible Colour Transforms for Lossless 2-D Data Compression." Applied Sciences 10, no. 3 (2020): 937. http://dx.doi.org/10.3390/app10030937.

Full text

Abstract:

Reversible Colour Transforms (RCTs) in conjunction with Bi-level Burrows–Wheeler Compression Algorithm (BBWCA) allows for high-level lossless image compression as demonstrated in this study. The RCTs transformation results in exceedingly coordinated image information among the neighbouring pixels as compared to the RGB colour space. This aids the Burrows–Wheeler Transform (BWT) based compression scheme and achieves compression ratios of high degree at the subsequent steps of the program. Validation has been done by comparing the proposed scheme across a range of benchmarks schemes and the perf

APA, Harvard, Vancouver, ISO, and other styles

4

Armenta Ramade, Álvaro, and Arturo Serrano Santoyo. "802.11g multilayer header compression for VoIP in remote rural contexts." Revista Facultad de Ingeniería Universidad de Antioquia, no. 71 (March 4, 2014): 101–14. http://dx.doi.org/10.17533/udea.redin.15011.

Full text

Abstract:

This article presents a Multilayer Header Compression scheme for VoIP packets in 802.11 wireless networks that does not require context synchronization of compressor and decompressor units. The reduction of the header size is accomplished through the static field compression of the RTP/UDP/IP headers in conjunction with an 8 bit virtual addressing in the 802.11 MAC layer. Considering the RTP/UDP/IP/MAC header fields, this scheme allows 48% header compression efficiency compared with 41% provided by the CRTP and RoHC schemes. Given that our proposal does not require context synchronization, the

APA, Harvard, Vancouver, ISO, and other styles

5

Xu, Haoran, Petr M. Anisimov, Bruce E. Carlsten, Leanne D. Duffy, Quinn R. Marksteiner, and River R. Robles. "X-ray Free Electron Laser Accelerator Lattice Design Using Laser-Assisted Bunch Compression." Applied Sciences 13, no. 4 (2023): 2285. http://dx.doi.org/10.3390/app13042285.

Full text

Abstract:

We report the start-to-end modeling of our accelerator lattice design employing a laser-assisted bunch compression (LABC) scheme in an X-ray free electron laser (XFEL), using the proposed Matter-Radiation Interactions in Extremes (MaRIE) XFEL parameters. The accelerator lattice utilized a two-stage bunch compression scheme, with the first bunch compressor performing a conventional bulk compression enhancing the beam current from 20 A to 500 A, at 750 MeV. The second bunch compression was achieved by modulating the beam immediately downstream of the first bunch compressor by a laser with 1-μm w

APA, Harvard, Vancouver, ISO, and other styles

6

Lu, Tzu-Chuen, and Chin-Chen Chang. "Data Compressor for VQ Index Tables." Fundamenta Informaticae 65, no. 4 (2005): 353–71. https://doi.org/10.3233/fun-2005-65404.

Full text

Abstract:

The vector quantization (VQ) compression scheme has been well accepted as an efficient image compression technique. However, the compression bit rate of the VQ scheme is limited. In order to improve its efficiency, in this paper, we shall propose a new lossless data compression scheme to further condense the VQ index table. The proposed scheme exploits the inter-block correlations in the index table to re-encode the indices. Unlike the well known existing re-encoding schemes such as SOC and STC, the proposed scheme uses a smaller number of compression codes to encode every index that coincides

APA, Harvard, Vancouver, ISO, and other styles

7

Moreno-Alvarado, Rodolfo, Eduardo Rivera-Jaramillo, Mariko Nakano, and Hector Perez-Meana. "Simultaneous Audio Encryption and Compression Using Compressive Sensing Techniques." Electronics 9, no. 5 (2020): 863. http://dx.doi.org/10.3390/electronics9050863.

Full text

Abstract:

The development of coding schemes with the capacity to simultaneously encrypt and compress audio signals is a subject of active research because of the increasing necessity for transmitting sensitive audio information over insecure communication channels. Thus, several schemes have been developed; firstly, some of them compress the digital information and subsequently encrypt the resulting information. These schemas efficiently compress and encrypt the information. However, they may compromise the information as it can be accessed before encryption. To overcome this problem, a compressing sens

APA, Harvard, Vancouver, ISO, and other styles

8

Wang, Zi Long, Tu Ji, Mei Song Zheng, Jun Ye Wang, and Li Jian Li. "An Efficient Two-Dimension BIST Compression Approach." Applied Mechanics and Materials 713-715 (January 2015): 552–57. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.552.

Full text

Abstract:

In this paper a two-dimension BIST compression scheme is presented; the proposed scheme is utilized in order to drive down the number of deterministic vectors to achieve complete fault coverage in BIST applications. By introducing shifting compression and input reduction, vertical and horizontal compression are realized respectively to achieve two-dimension BIST compression. Experimental results show that the BIST shifting compression based on input reduction can achieve great compression rate as much as 99%. Comparisons with previously competitive presented schemes indicate that the proposed

APA, Harvard, Vancouver, ISO, and other styles

9

Chen, Yang, and Zheng Qin. "Region-Based Image-Fusion Framework for Compressive Imaging." Journal of Applied Mathematics 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/219540.

Full text

Abstract:

A novel region-based image-fusion framework for compressive imaging (CI) and its implementation scheme are proposed. Unlike previous works on conventional image fusion, we consider both compression capability on sensor side and intelligent understanding of the image contents in the image fusion. Firstly, the compressed sensing theory and normalized cut theory are introduced. Then region-based image-fusion framework for compressive imaging is proposed and its corresponding fusion scheme is constructed. Experiment results demonstrate that the proposed scheme delivers superior performance over tr

APA, Harvard, Vancouver, ISO, and other styles

10

AKSENOV, A. A., A. A. AKSENOV, and O. D. DYACHKIN. "COMPRESSING SHORT STRINGS WITH A LIMITED OUTPUT ALPHABET." Vestnik LSTU, no. 4 (2023): 5–8. http://dx.doi.org/10.53015/23049235_2023_4_5.

Full text

Abstract:

The paper analyses the possibility and impact of limiting the output alphabet when compressing short strings using the novel FSST [1] compression scheme. It was established that if a small number of bytes are excluded from the alphabet (6 out of 256 possible, with 250 bytes left in the alphabet), it barely impacts the average string compression ratio while simplifying FSST scheme implementation in production systems. Moreover, it was established that even with significant restrictions (with only 92 Latin-1 bytes out of 256 possible), the FSST scheme is still applicable. The paper also outlines

APA, Harvard, Vancouver, ISO, and other styles

11

ACHARYA, TINKU, and AMAR MUKHERJEE. "HIGH-SPEED PARALLEL VLSI ARCHITECTURES FOR IMAGE DECORRELATION." International Journal of Pattern Recognition and Artificial Intelligence 09, no. 02 (1995): 343–65. http://dx.doi.org/10.1142/s021800149500016x.

Full text

Abstract:

We present a new high speed parallel architecture and its VLSI implementation to design a special purpose hardware for real-time lossless image compression/ decompression using a decorrelation scheme. The proposed architecture can easily be implemented using state-of-the-art VLSI technology. The hardware yields a high compression rate. A prototype 1-micron VLSI chip based on this architectural idea has been designed. The scheme is favourably comparable to the lossless JPEG standard image compression schemes. We also discuss the parallelization issues of the lossless JPEG standard still compres

APA, Harvard, Vancouver, ISO, and other styles

12

Li, Jun, and Wenyi Zhang. "Asymptotically Optimal Status Update Compression in Multi-Source System: Age–Distortion Tradeoff." Entropy 27, no. 7 (2025): 664. https://doi.org/10.3390/e27070664.

Full text

Abstract:

We consider a compression problem in a multi-source status-updating system through a representative two-source scenario. The status updates are generated by two independent sources following heterogeneous Poisson processes. These updates are then compressed into binary strings and sent to the receiver via a shared, error-free channel with a unit rate. We propose two compression schemes—a multi-quantizer compression scheme, where a dedicated quantizer–encoder pair is assigned to each source for compression, and a single-quantizer compression scheme, employing a unified quantizer–encoder pair sh

APA, Harvard, Vancouver, ISO, and other styles

13

HU, YU-CHEN. "LOW BIT-RATE IMAGE COMPRESSION SCHEMES BASED ON VECTOR QUANTIZATION." International Journal of Image and Graphics 05, no. 04 (2005): 745–64. http://dx.doi.org/10.1142/s0219467805001963.

Full text

Abstract:

Three image compression schemes based on vector quantization are proposed in this paper. The block similarity property among neighboring image blocks is exploited in these schemes to cut down the bit rate of the vector quantization scheme. For the first scheme, the correlation among the encoded block to the left and the encoded block directly above the current processing block is exploited. In the second scheme, the relative addressing technique is incorporated into the encoding procedure. Finally, the third scheme introduces a simple technique to reduce the required bit rate with only a sligh

APA, Harvard, Vancouver, ISO, and other styles

14

Abliz, Wayit, Hao Wu, Maihemuti Maimaiti, et al. "A Syllable-Based Technique for Uyghur Text Compression." Information 11, no. 3 (2020): 172. http://dx.doi.org/10.3390/info11030172.

Full text

Abstract:

To improve utilization of text storage resources and efficiency of data transmission, we proposed two syllable-based Uyghur text compression coding schemes. First, according to the statistics of syllable coverage of the corpus text, we constructed a 12-bit and 16-bit syllable code tables and added commonly used symbols—such as punctuation marks and ASCII characters—to the code tables. To enable the coding scheme to process Uyghur texts mixed with other language symbols, we introduced a flag code in the compression process to distinguish the Unicode encodings that were not in the code table. Th

APA, Harvard, Vancouver, ISO, and other styles

15

Bajpai, Shrish, Harsh Vikram Singh, and Naimur Rahman Kidwai. "3D modified wavelet block tree coding for hyperspectral images." Indonesian Journal of Electrical Engineering and Computer Science 15, no. 2 (2019): 1001. http://dx.doi.org/10.11591/ijeecs.v15.i2.pp1001-1008.

Full text

Abstract:

<p><span>A novel wavelet-based efficient hyperspectral image compression scheme for low memory sensors has been proposed. The proposed scheme uses the 3D dyadic wavelet transform to exploit intersubband and intrasubband correlation among the wavelet coefficients. By doing the reconstruction of the transform image cube, taking the difference between the frames, it increases the coding efficiency, reduces the memory requirement and complexity of the hyperspectral compression schemes in comparison with other state-of-the-art compression schemes.</span></p>

APA, Harvard, Vancouver, ISO, and other styles

16

SRIRAAM, N., and C. ESWARAN. "EEG SIGNAL COMPRESSION USING RADIAL BASIS NEURAL NETWORKS." Journal of Mechanics in Medicine and Biology 04, no. 02 (2004): 143–52. http://dx.doi.org/10.1142/s0219519404000928.

Full text

Abstract:

This paper describes a two-stage lossless compression scheme for electroencephalographic (EEG) signals using radial basis neural network predictors. Two variants of the radial basis network, namely, the radial basis function network and the generalized regression neural network are used in the first stage and their performances are evaluated in terms of compression ratio. The training is imparted to the network by using two training schemes, namely, single block scheme and block adaptive scheme. The compression ratios achieved by these networks when used along with arithmetic encoders in a two

APA, Harvard, Vancouver, ISO, and other styles

17

Guerra, Aníbal, Jaime Lotero, José Édinson Aedo, and Sebastián Isaza. "Tackling the Challenges of FASTQ Referential Compression." Bioinformatics and Biology Insights 13 (January 2019): 117793221882137. http://dx.doi.org/10.1177/1177932218821373.

Full text

Abstract:

The exponential growth of genomic data has recently motivated the development of compression algorithms to tackle the storage capacity limitations in bioinformatics centers. Referential compressors could theoretically achieve a much higher compression than their non-referential counterparts; however, the latest tools have not been able to harness such potential yet. To reach such goal, an efficient encoding model to represent the differences between the input and the reference is needed. In this article, we introduce a novel approach for referential compression of FASTQ files. The core of our

APA, Harvard, Vancouver, ISO, and other styles

18

Kolo, Jonathan Gana, S. Anandan Shanmugam, David Wee Gin Lim, Li-Minn Ang, and Kah Phooi Seng. "An Adaptive Lossless Data Compression Scheme for Wireless Sensor Networks." Journal of Sensors 2012 (2012): 1–20. http://dx.doi.org/10.1155/2012/539638.

Full text

Abstract:

Energy is an important consideration in the design and deployment of wireless sensor networks (WSNs) since sensor nodes are typically powered by batteries with limited capacity. Since the communication unit on a wireless sensor node is the major power consumer, data compression is one of possible techniques that can help reduce the amount of data exchanged between wireless sensor nodes resulting in power saving. However, wireless sensor networks possess significant limitations in communication, processing, storage, bandwidth, and power. Thus, any data compression scheme proposed for WSNs must

APA, Harvard, Vancouver, ISO, and other styles

19

Yang, Chen, Ping Pan, and Qun Ding. "Image Encryption Scheme Based on Mixed Chaotic Bernoulli Measurement Matrix Block Compressive Sensing." Entropy 24, no. 2 (2022): 273. http://dx.doi.org/10.3390/e24020273.

Full text

Abstract:

Many image encryption schemes based on compressive sensing have poor reconstructed image quality when the compression ratio is low, as well as difficulty in hardware implementation. To address these problems, we propose an image encryption algorithm based on the mixed chaotic Bernoulli measurement matrix block compressive sensing. A new chaotic measurement matrix was designed using the Chebyshev map and logistic map; the image was compressed in blocks to obtain the measurement values. Still, using the Chebyshev map and logistic map to generate encrypted sequences, the measurement values were e

APA, Harvard, Vancouver, ISO, and other styles

20

Kryshtopa, S. I., L. I. Kryshtopa, M. М. Hnyp, I. M. Mykytiy, and M. M. Tseber. "Development of energy efficient system of gas cooling of mobile diesel compressor stations of oil and gas industry." Oil and Gas Power Engineering, no. 1(33) (September 3, 2020): 81–89. http://dx.doi.org/10.31471/1993-9868-2020-1(33)-81-89.

Full text

Abstract:

The developments of domestic and foreign specialists in the field of improving the energy efficiency of mobile diesel compressor stations of the oil and gas industry is studied. The disadvantages of existing mobile diesel compressor stations in terms of their energy efficiency are identified. Theoretical studies of energy efficiency directions and designs of existing mobile diesel compressor stations have been carried out. It has been studied that for efficient operation of a compressor station it is rational to increase the load of compressors and organize the operation of equipment in energy

APA, Harvard, Vancouver, ISO, and other styles

21

Hu, Yu-Chen, and Chin-Chen Chang. "A new lossless compression scheme based on Huffman coding scheme for image compression." Signal Processing: Image Communication 16, no. 4 (2000): 367–72. http://dx.doi.org/10.1016/s0923-5965(99)00064-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Priya, G. L., and Debashis Ghosh. "BCS-Based Encoding Schemes for Monoview and Multiview Visual Configurations in WVSN Data Gathering: A Survey." ECTI Transactions on Computer and Information Technology (ECTI-CIT) 18, no. 4 (2024): 508–21. http://dx.doi.org/10.37936/ecti-cit.2024184.256278.

Full text

Abstract:

Wireless Visual Sensor Network (WVSN) has become a valuable tool in addressing the evolving needs of modern monitoring systems. Encoding in WVSNs is a multifaceted process that involves compressing visual data, optimizing energy consumption, ensuring error resilience, and adapting to various network and application requirements. The associated lightweight encoders and the demand for less storage space make block compressive sensing (BCS) techniques suitable for WVSN applications where energy, bandwidth, and storage resources are limited. Based on the number of visual perspectives or camera ang

APA, Harvard, Vancouver, ISO, and other styles

23

Langi, Armein. "EDGE-PRESERVING WAVELET IMAGE REPRESENTATIONS WITH APPLICATIONS TO COMPRESSION OF AERIAL ORTHO IMAGES." ASEAN Engineering Journal 1, no. 2 (2011): 51–60. http://dx.doi.org/10.11113/aej.v1.15290.

Full text

Abstract:

This paper describes a new second-generation-type lossy image compression scheme using wavelets for aerial ortho images. For map applications where some losses are allowed, aerial ortho images present a possibility of having a very high compression ratio, because they are natural images with many uniform (coherent) subregions. However classical compression schemes such as the joint-photograph expert group (JPEG) standard do not preserve image edges, which are critical in preserving precision of the objects' positions. In our compression scheme, an image is seen as a collection of edges and tex

APA, Harvard, Vancouver, ISO, and other styles

24

Lin, Yijie, Jui-Chuan Liu, Ching-Chun Chang, and Chin-Chen Chang. "Lossless Recompression of Vector Quantization Index Table for Texture Images Based on Adaptive Huffman Coding Through Multi-Type Processing." Symmetry 16, no. 11 (2024): 1419. http://dx.doi.org/10.3390/sym16111419.

Full text

Abstract:

With the development of the information age, all walks of life are inseparable from the internet. Every day, huge amounts of data are transmitted and stored on the internet. Therefore, to improve transmission efficiency and reduce storage occupancy, compression technology is becoming increasingly important. Based on different application scenarios, it is divided into lossless data compression and lossy data compression, which allows a certain degree of compression. Vector quantization (VQ) is a widely used lossy compression technology. Building upon VQ compression technology, we propose a loss

APA, Harvard, Vancouver, ISO, and other styles

25

Guo, Chang, Junhua Xi, Zhanhao He, Jiaqi Liu, and Jungang Yang. "A Knowledge Base Driven Task-Oriented Image Semantic Communication Scheme." Remote Sensing 16, no. 21 (2024): 4044. http://dx.doi.org/10.3390/rs16214044.

Full text

Abstract:

With the development of artificial intelligence and computer hardware, semantic communication has been attracting great interest. As an emerging communication paradigm, semantic communication can reduce the requirement for channel bandwidth by extracting semantic information. This is an effective method that can be applied to image acquisition of unmanned aerial vehicles, which can transmit high-data-volume images within the constraints of limited available bandwidth. However, the existing semantic communication schemes fail to adequately incorporate the guidance of task requirements into the

APA, Harvard, Vancouver, ISO, and other styles

26

Eldstål-Ahrens, Albin, Angelos Arelakis, and Ioannis Sourdis. "L ² C: Combining Lossy and Lossless Compression on Memory and I/O." ACM Transactions on Embedded Computing Systems 21, no. 1 (2022): 1–27. http://dx.doi.org/10.1145/3481641.

Full text

Abstract:

In this article, we introduce L 2 C, a hybrid lossy/lossless compression scheme applicable both to the memory subsystem and I/O traffic of a processor chip. L 2 C employs general-purpose lossless compression and combines it with state-of-the-art lossy compression to achieve compression ratios up to 16:1 and to improve the utilization of chip’s bandwidth resources. Compressing memory traffic yields lower memory access time, improving system performance, and energy efficiency. Compressing I/O traffic offers several benefits for resource-constrained systems, including more efficient storage and n

APA, Harvard, Vancouver, ISO, and other styles

27

Sultana, Tangina, and Young-Koo Lee. "gRDF: An Efficient Compressor with Reduced Structural Regularities That Utilizes gRePair." Sensors 22, no. 7 (2022): 2545. http://dx.doi.org/10.3390/s22072545.

Full text

Abstract:

The explosive volume of semantic data published in the Resource Description Framework (RDF) data model demands efficient management and compression with better compression ratio and runtime. Although extensive work has been carried out for compressing the RDF datasets, they do not perform well in all dimensions. However, these compressors rarely exploit the graph patterns and structural regularities of real-world datasets. Moreover, there are a variety of existing approaches that reduce the size of a graph by using a grammar-based graph compression algorithm. In this study, we introduce a nove

APA, Harvard, Vancouver, ISO, and other styles

28

Amir Sultan, Duha. "Better Adaptive Text Compression Scheme." JOURNAL OF EDUCATION AND SCIENCE 27, no. 2 (2018): 48–57. http://dx.doi.org/10.33899/edusj.2018.147575.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

A. Ahmed Al-Obaidi, Yasir, and Hadeel N. Abdullah. "Image Compression Using Lifting Scheme." Engineering and Technology Journal 28, no. 17 (2010): 5455–67. http://dx.doi.org/10.30684/etj.28.17.5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Komarov, Victor A., and Sergey N. Laskov. "Rod models of strength of compressed concrete strips of the conjugation between beams and columns of prefabricated monolithic frames." Concrete and Reinforced Concrete 621, no. 2 (2024): 5–12. http://dx.doi.org/10.37538/0005-9889-2024-2(621)-5-12.

Full text

Abstract:

Introduction. The existing methods of calculation of reinforced concrete structures are not universal. Each calculation model is suitable only for a limited class of elements. The construction of a general design model that adequately describes the resistance of structures to shear forces in combination with bending is one of the most difficult tasks of reinforced concrete theory. Therefore, in practical calculations of shear strength, contingent models are used. Aim. Construction of bar models of concrete compressive strength of inclined strips of concrete. Materials and methods. The proposed

APA, Harvard, Vancouver, ISO, and other styles

31

Motaung, William B., Kingsley A. Ogudo, and Chabalala S. Chabalala. "Optimal Video Compression Parameter Tuning for Digital Video Broadcasting (DVB) using Deep Reinforcement Learning." International Conference on Intelligent and Innovative Computing Applications 2022 (December 31, 2022): 270–76. http://dx.doi.org/10.59200/iconic.2022.030.

Full text

Abstract:

DVB (digital video broadcasting) has undergone an enormous paradigm shift, especially through internet streaming that utilizes multiple channels (i.e., secured hypertext transfer protocols). However, due to the limitations of the current communication network infrastructure, video signals need to be compressed before transmission. Whereas most recent research has concentrated and focused on assessing video quality, little to no study has worked on improving the compression processes of digital video signals in lightweight DVB setups. This study provides a video compression strategy (DRL-VC) th

APA, Harvard, Vancouver, ISO, and other styles

32

alZahir, Saif, and Syed M. Naqvi. "A Hybrid Lossless-Lossy Binary Image Compression Scheme." International Journal of Computer Vision and Image Processing 3, no. 4 (2013): 37–50. http://dx.doi.org/10.4018/ijcvip.2013100103.

Full text

Abstract:

In this paper, the authors present a binary image compression scheme that can be used either for lossless or lossy compression requirements. This scheme contains five new contributions. The lossless component of the scheme partitions the input image into a number of non-overlapping rectangles using a new line-by-line method. The upper-left and the lower-right vertices of each rectangle are identified and the coordinates of which are efficiently encoded using three methods of representation and compression. The lossy component, on the other hand, provides higher compression through two techniqu

APA, Harvard, Vancouver, ISO, and other styles

33

Juan, Chia-Chen, and Chin-Chen. "Reversible Steganographic Scheme for AMBTC-Compressed Image Based on (7,4) Hamming Code." Symmetry 11, no. 10 (2019): 1236. http://dx.doi.org/10.3390/sym11101236.

Full text

Abstract:

In recent years, compression steganography technology has attracted the attention of many scholars. Among all image compression method, absolute moment block truncation coding (AMBTC) is a simple and effective compression method. Most AMBTC-based reversible data hiding (RDH) schemes do not guarantee that the stego AMBTC compression codes can be translated by the conventional AMBTC decoder. In other words, they do not belong to Type I AMBTC-based RDH scheme and easily attract malicious users’ attention. To solve this problem and enhance the hiding capacity, we used (7,4) hamming code to design

APA, Harvard, Vancouver, ISO, and other styles

34

Lee, Chun-Hee, and Chin-Wan Chung. "Compression Schemes with Data Reordering for Ordered Data." Journal of Database Management 25, no. 1 (2014): 1–28. http://dx.doi.org/10.4018/jdm.2014010101.

Full text

Abstract:

Although there have been many compression schemes for reducing data effectively, most schemes do not consider the reordering of data. In the case of unordered data, if the users change the data order in a given data set, the compression ratio may be improved compared to the original compression before reordering data. However, in the case of ordered data, the users need a mapping table that maps the original position to the changed position in order to recover the original order. Therefore, reordering ordered data may be disadvantageous in terms of space. In this paper, the authors consider tw

APA, Harvard, Vancouver, ISO, and other styles

35

Lee, S. "Density ratios in compressions driven by radiation pressure." Laser and Particle Beams 6, no. 3 (1988): 597–606. http://dx.doi.org/10.1017/s026303460000553x.

Full text

Abstract:

It has been recently suggested (Hora & Miley 1984) that in the cannonball scheme of laser compression the pellet may be considered to be compressed by the ‘brute force’ of the radiation pressure. For such a radiation-driven compression, this paper applies an energy balance method to give an equation fixing the radius compression ratio κ which is a key parameter for such intense compressions. A shock model is used to yield specific results. For a square-pulse driving power compressing a spherical pellet with a specific heat ratio of 5/3, a density compression ratio Γ of 27 is computed. Doub

APA, Harvard, Vancouver, ISO, and other styles

36

Cai, Changchun, Enjian Bai, Xue-Qin Jiang, and Yun Wu. "Simultaneous Audio Encryption and Compression Using Parallel Compressive Sensing and Modified Toeplitz Measurement Matrix." Electronics 10, no. 23 (2021): 2902. http://dx.doi.org/10.3390/electronics10232902.

Full text

Abstract:

With the explosive growth of voice information interaction, there is an urgent need for safe and effective compression transmission methods. In this paper, compressive sensing is used to realize the compression and encryption of speech signals. Firstly, the scheme of linear feedback shift register combined with inner product to generate measurement matrix is proposed. Secondly, we adopt a new parallel compressive sensing technique to tremendously improve the processing efficiency. Further, the two parties in the communication adopt public key cryptosystem to safely share the key and select a d

APA, Harvard, Vancouver, ISO, and other styles

37

Rabiul Islam, Sheikh Md, Xu Huang, and Keng Liang Ou. "Image Compression Based on Compressive Sensing Using Wavelet Lifting Scheme." International journal of Multimedia & Its Applications 7, no. 1 (2015): 01–16. http://dx.doi.org/10.5121/ijma.2015.7101.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Kumar JHA, Mithilesh, Brejesh Lall, and Sumantra Roy. "DEMD-Based Image Compression Scheme in a Compressive Sensing Framework." Journal of Pattern Recognition Research 9, no. 1 (2014): 64–78. http://dx.doi.org/10.13176/11.580.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Sheikh Akbari, A., and P. Bagheri Zadeh. "Compressive sampling and wavelet-based multi-view image compression scheme." Electronics Letters 48, no. 22 (2012): 1403. http://dx.doi.org/10.1049/el.2012.2613.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Li, Yong Jie, Dong Jiao Xu, Xin Wang, and Ying Chang. "Signal Compression Reconstruction with Narrow-Band Interference." Applied Mechanics and Materials 668-669 (October 2014): 1110–13. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.1110.

Full text

Abstract:

Compressive sensing (CS) implements sampling and compression to sparse or compressible signals simultaneously. Compressive signal processing is a new signal processing scheme base on compressive sensing theory. In this paper, the problem of signal compressive reconstruction base on narrow-band interference is researched. The reconstruction performance of BP, MP, and OMP algorithms with narrow-band interference is analyzed by computer simulations.

APA, Harvard, Vancouver, ISO, and other styles

41

Liu, Yong, Bing Li, Yan Zhang, and Xia Zhao. "A Huffman-Based Joint Compression and Encryption Scheme for Secure Data Storage Using Physical Unclonable Functions." Electronics 10, no. 11 (2021): 1267. http://dx.doi.org/10.3390/electronics10111267.

Full text

Abstract:

With the developments of Internet of Things (IoT) and cloud-computing technologies, cloud servers need storage of a huge volume of IoT data with high throughput and robust security. Joint Compression and Encryption (JCAE) scheme based on Huffman algorithm has been regarded as a promising technology to enhance the data storage method. Existing JCAE schemes still have the following limitations: (1) The keys in the JCAE would be cracked by physical and cloning attacks; (2) The rebuilding of Huffman tree reduces the operational efficiency; (3) The compression ratio should be further improved. In t

APA, Harvard, Vancouver, ISO, and other styles

42

Chung, Kuo-Liang, Hsuan-Ying Chen, Tsung-Lun Hsieh, and Yen-Bo Chen. "Compression for Bayer CFA Images: Review and Performance Comparison." Sensors 22, no. 21 (2022): 8362. http://dx.doi.org/10.3390/s22218362.

Full text

Abstract:

Bayer color filter array (CFA) images are captured by a single-chip image sensor covered with a Bayer CFA pattern which has been widely used in modern digital cameras. In the past two decades, many compression methods have been proposed to compress Bayer CFA images. These compression methods can be roughly divided into the compression-first-based (CF-based) scheme and the demosaicing-first-based (DF-based) scheme. However, in the literature, no review article for the two compression schemes and their compression performance is reported. In this article, the related CF-based and DF-based compre

APA, Harvard, Vancouver, ISO, and other styles

43

Kang, Heung-Sik, Haeryong Yang, Gyujin Kim, et al. "FEL performance achieved at PAL-XFEL using a three-chicane bunch compression scheme." Journal of Synchrotron Radiation 26, no. 4 (2019): 1127–38. http://dx.doi.org/10.1107/s1600577519005861.

Full text

Abstract:

PAL-XFEL utilizes a three-chicane bunch compression (3-BC) scheme (the very first of its kind in operation) for free-electron laser (FEL) operation. The addition of a third bunch compressor allows for more effective mitigation of coherent synchrotron radiation during bunch compression and an increased flexibility of system configuration. Start-to-end simulations of the effects of radiofrequency jitter on the electron beam performance show that using the 3-BC scheme leads to better performance compared with the two-chicane bunch compression scheme. Together with the high performance of the lina

APA, Harvard, Vancouver, ISO, and other styles

44

Pathak, Vinay, Karan Singh, Radha Raman Chandan, et al. "Efficient Compression Sensing Mechanism Based WBAN System Using Blockchain." Security and Communication Networks 2023 (May 11, 2023): 1–12. http://dx.doi.org/10.1155/2023/8468745.

Full text

Abstract:

The hybrid wireless sensor network is made up of Wireless Body Area Network (WBAN). Generally, many hospitals use cellular networks to support telemedicine. To provide the treatment to the patient on time, for this, an early diagnosis is required, for treatment. With the help of WBANs, collections and transmissions of essential biomedical data to monitor human health becomes easy. Compressor Sensing (CS) is an emerging signal compression/acquisition methodology that offers a protruding alternative to traditional signal acquisition. The proposed mechanism reduces message exchange overhead and e

APA, Harvard, Vancouver, ISO, and other styles

45

Tsai, Chao-Jen, Huan-Chih Wang, and Ja-Ling Wu. "Three Techniques for Enhancing Chaos-Based Joint Compression and Encryption Schemes." Entropy 21, no. 1 (2019): 40. http://dx.doi.org/10.3390/e21010040.

Full text

Abstract:

In this work, three techniques for enhancing various chaos-based joint compression and encryption (JCAE) schemes are proposed. They respectively improved the execution time, compression ratio, and estimation accuracy of three different chaos-based JCAE schemes. The first uses auxiliary data structures to significantly accelerate an existing chaos-based JCAE scheme. The second solves the problem of huge multidimensional lookup table overheads by sieving out a small number of important sub-tables. The third increases the accuracy of frequency distribution estimations, used for compressing stream

APA, Harvard, Vancouver, ISO, and other styles

46

Wu, Chun Ming, Lang Fang Su, and Tao Yang. "An Improved Image Compression Algorithm Based on Block and Classification Scheme." Applied Mechanics and Materials 711 (December 2014): 282–85. http://dx.doi.org/10.4028/www.scientific.net/amm.711.282.

Full text

Abstract:

To improve compression performance, and realize the automatic selection of compression algorithms in processing images without the prior information, the regularity relationship between compression algorithms and image features is studied, and a preprocessing scheme of block and classification based on image features has been proposed in this paper. Compression algorithms pre and post preprocessing scheme are investigated for the same 100 images. Our scheme achieves the larger peak signal to noise ratio (PSNR), which demonstrates the effectiveness of the proposed preprocessing scheme of block

APA, Harvard, Vancouver, ISO, and other styles

47

Julian L. Webber. "An Efficient Medical Image Compression using Modified Set Partitioning in Hierarchical Trees (MSPIHT)." Panamerican Mathematical Journal 35, no. 2s (2024): 28–41. https://doi.org/10.52783/pmj.v35.i2s.2395.

Full text

Abstract:

Set Partitioning in Hierarchical Trees (SPIHT) is an effective image compression algorithm. SPIHT is a unique approach which transmits the values of the pixels indirectly to the coordinates. The packet coders in the images present a universal transform the framework in a constriction of the filter bank schema which is attained by the Space Frequency Quantization (SFQ) and the effective compression is achieved by the Huffman coding. The proposed scheme permits transformation in the joints and alterations in the discrete magnitude of the input image. Hence, coding performance is enhanced and the

APA, Harvard, Vancouver, ISO, and other styles

48

Li, Zhen, Changgen Peng, Weijie Tan, and Liangrong Li. "An Efficient Plaintext-Related Chaotic Image Encryption Scheme Based on Compressive Sensing." Sensors 21, no. 3 (2021): 758. http://dx.doi.org/10.3390/s21030758.

Full text

Abstract:

With the development of mobile communication network, especially 5G today and 6G in the future, the security and privacy of digital images are important in network applications. Meanwhile, high resolution images will take up a lot of bandwidth and storage space in the cloud applications. Facing the demands, an efficient and secure plaintext-related chaotic image encryption scheme is proposed based on compressive sensing for achieving the compression and encryption simultaneously. In the proposed scheme, the internal keys for controlling the whole process of compression and encryption is first

APA, Harvard, Vancouver, ISO, and other styles

49

Wang, Shunsen, Kunlun Bai, Yonghui Xie, Juan Di, and Shangfang Cheng. "Analysis of Combined Power and Refrigeration Generation Using the Carbon Dioxide Thermodynamic Cycle to Recover the Waste Heat of an Internal Combustion Engine." Mathematical Problems in Engineering 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/689398.

Full text

Abstract:

A novel thermodynamic system is proposed to recover the waste heat of an internal combustion engine (ICE) by integrating the transcritical carbon dioxide (CO2) refrigeration cycle with the supercritical CO2power cycle, and eight kinds of integration schemes are developed. The key parameters of the system are optimized through a genetic algorithm to achieve optimum matching with different variables and schemes, as well as the maximum net power output (Wnet). The results indicate that replacing a single-turbine scheme with a double-turbine scheme can significantly enhance the net power output (W

APA, Harvard, Vancouver, ISO, and other styles

50

Huang, P. X., S. Yonkers, and J. Willie. "A Novel Screw Compressor with a Shunt Enhanced Compression and Pulsation Trap (SECAPT)." IOP Conference Series: Materials Science and Engineering 1267, no. 1 (2022): 012019. http://dx.doi.org/10.1088/1757-899x/1267/1/012019.

Full text

Abstract:

Some positive displacement (PD) compressors are equipped with automatic discharge valves such as reed valves that open automatically whenever the cavity pressure is slightly larger than the outlet pressure to deal effectively with varying pressure ratio applications. Screw compressors today do not have such valves, resulting in off-design conditions known as the under-compression or over-compression when the cavity pressure at discharge is deviating from the outlet pressure. Compressor efficiency suffers and pulsation/noise becomes worse under these conditions. Some type of controls are desire

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!