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Dissertations / Theses on the topic 'Integer Wavelet Transform'

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1

Game, Adrian Colin. "Design and real-time hardware implementation of binary integer wavelet transforms." Thesis, University of Warwick, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487814.

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This thesis explores methods to construct efficient wavelet transforms for operation on Field Programmable Gate Array (FPGA) devices. Additionally the wavelets designed have been used in an audio watermarking application.
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2

Lai, Bo-Luen, and 賴伯倫. "Adaptive Data Hiding Based on Integer Wavelet Transform." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/04226036053706468608.

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碩士<br>國立清華大學<br>資訊工程學系<br>93<br>Key words: data hiding, wavelet transform, adaptive In this paper, we propose an adaptive data hiding method in the frequency domain. We divide original image into 8*8 sub-blocks and use Haar Discrete Wavelet Transform (HDWT) to decompose each block to obtain sub-bands, LL, HL, LH and HH. A data hiding capacity function is proposed to analyzes each band except LL. It can be used to judge the hiding length of each coefficient of each band and to decide whether the subbands LH, HL and HH are complex or not. If these three sub bands are complex, the LL band is furt
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3

"DESIGN AND IMPLEMENTATION OF LIFTING BASED DAUBECHIES WAVELET TRANSFORMS USING ALGEBRAIC INTEGERS." Thesis, 2013. http://hdl.handle.net/10388/ETD-2013-04-1011.

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Over the past few decades, the demand for digital information has increased drastically. This enormous demand poses serious difficulties on the storage and transmission bandwidth of the current technologies. One possible solution to overcome this approach is to compress the amount of information by discarding all the redundancies. In multimedia technology, various lossy compression techniques are used to compress the raw image data to facilitate storage and to fit the transmission bandwidth. In this thesis, we propose a new approach using algebraic integers to reduce the complexity of the Daub
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4

王凱億. "Progressive image compression based on integer wavelet transform and grey theory." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/85732478890376003356.

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碩士<br>國立中央大學<br>資訊工程研究所<br>89<br>In this paper a progressive image compression approach based on our proposed integer wavelet transform and grey prediction is proposed. The integer wavelet transform is based on a reversible round-off linear transform algorithm to forward and backward transform integers without any loss. The proposed compression approach is combining the EZW method and a grey prediction to compress images. EZW is a famous wavelet-based image compression and the grey prediction is based on the grey theo
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5

Fong, Chen Shih, and 陳仕峯. "A Robust Multiple Logo-Watermarking Scheme Based on Integer Wavelet Transform." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/48865443739964616534.

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碩士<br>輔仁大學<br>資訊工程學系<br>96<br>This paper proposes an integer wavelet-based multiple logo-watermarking process for the copyright protection of still images. The watermark logo is embedded into integer wavelet coefficients of low-pass and high-pass bands at the first level of discrete wavelet transform decomposition. Based on the properties of modular operation, the algorithm utilizes multiple modular operations with different threshold values to modify the wavelet coefficients. To enhance security, the scramble method is used to permute the meaningful watermark logo, and the one-way determinist
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6

Su, Pa, and 蘇珮. "Design of An Efficient VLSI Architecture for the Integer Wavelet Transform." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/11568887677249327675.

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7

Yu, Chwen-Jiun, and 余淳鈞. "A Novel Lossless Image Compression Using Integer Wavelet Transform and Quadtree Segmentation." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/75272077832708729627.

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碩士<br>國立清華大學<br>資訊工程學系<br>87<br>In this paper, we propose a new algorithm for lossless image compression. It has two stages. The first stage transform the images into wavelet coefficients with integer wavelet transform. It decomposes the image into several subbands and reduce its entropy. The second stage is to code the wavelet coefficients with arithmetic coding. In order to improve the coding efficiency, we also takes advantage of quadtree segmentation. If the bit rates of a block of the wavelet coefficients after the arithm
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8

Chen, Pei-Lun, and 陳培倫. "Efficient Information Hiding Techniques based on Integer Wavelet Transform and Interval Expansion." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/87120727269901118468.

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碩士<br>朝陽科技大學<br>資訊管理系碩士班<br>97<br>As the technology advances, people can easily exchange messages via the Internet, but it also brings security worries. In order to protect the information will not be illegal person stealed, scholars proposed the information hiding technique to embed secret messages into pictures, images, audios, and other multimedia to generate stego media for the protection of private information. This paper proposes an information hiding method that exploits the Integer Wavelet Transform and Replace Function. First of all, the cover image is transformed into frequency coeff
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9

Joseph, Smitha. "Implementation of the two dimensional integer wavelet transform for transmission of images." 2004. http://www.lib.ncsu.edu/theses/available/etd-10262004-161831/unrestricted/etd.pdf.

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10

Mehrotra, Abhishek. "Shape Adaptive Integer Wavelet Transform Based Coding Scheme For 2-D/3-D Brain MR Images." Thesis, 2004. https://etd.iisc.ac.in/handle/2005/1171.

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11

Syue, Jhih-Hao, and 薛志豪. "Applied Shamir's Scheme with Multiple Levels of Integer Wavelet Transform for Secret Image Sharing." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/33727345567394079137.

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碩士<br>玄奘大學<br>資訊管理學系碩士班<br>100<br>We proposed an image sharing based on multiple levels of Haar wavelet transform and Shamir’s method. Previous works progress secret image sharing method with Shamir’s algorithm in a whole image. We apply discrete Haar wavelet transform to reduce the secret image to its quarter size or even smaller size firstly, i.e. the level one, level two, or level three of the LL subband. Then employ the modified Shamir’s algorithm to this LL subband to produce the shadow images. In retrieval step we use the Lagrange method with enough numbers of the shadow images to recons
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12

Mehrbany, Irany Behrang. "A High Capacity Reversible Multiple Watermarking Scheme - applications to Images, Medical Data, and Biometrics." Thesis, 2011. http://hdl.handle.net/1807/29530.

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Modern technologies have eased the way for adversaries to bypass the conventional identity authentication and identification processes; hence security systems have been developed to a great extent for protection of privacy and security of identities in different applications. The focus of this thesis is digital watermarking, security and privacy, as well as the ability to employ electrocardiogram as a method to enhance the security and privacy level. A high capacity reversible multiple watermarking scheme is introduced to mainly target the medical images. Furthermore, the use of ECG biometric
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13

Mehrotra, Abhishek. "Shape Adaptive Integer Wavelet Transform Based Coding Scheme For 2-D/3-D Brain MR Images." Thesis, 2004. http://etd.iisc.ernet.in/handle/2005/1171.

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14

Srikanth, R. "3D Coding Of MR Images And Estimation Of Hemodynamic Response Function From fMRI Data." Thesis, 2004. https://etd.iisc.ac.in/handle/2005/1175.

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15

Srinivasan, Susarshan. "Functional Test Pattern Generation for Maximizing Temperature in 2d and 3d Integrated Circuits." 2012. https://scholarworks.umass.edu/theses/775.

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Localized heating leads to generation of thermal Hotspots that affect performance and reliability of an Integrated Circuit(IC). Functional workloads determine the locations and temperature of hotspots on a die. Programs are classified into phases based on program execution profile. During a phase, spatial power dissipation pattern of an application remains unchanged. In this thesis, we present a systematic approach for developing a synthetic workload from a functional workload to create worst case temperature of a target hotspot in 2D and 3D IC. These synthetic workload are designed to create
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Srikanth, R. "3D Coding Of MR Images And Estimation Of Hemodynamic Response Function From fMRI Data." Thesis, 2004. http://etd.iisc.ernet.in/handle/2005/1175.

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17

Adams, Michael David. "Reversible interger-to-interger wavelet transforms for image coding." Thesis, 2002. http://hdl.handle.net/2429/13302.

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Reversible integer-to-integer (ITI) wavelet transforms are studied in the context of image coding. Considered are matters such as transform frameworks, transform design techniques, the utility of transforms for image coding, and numerous practical issues related to transforms. The generalized reversible ITI transform (GRITIT) framework, a single unified framework for reversible ITI wavelet/block transforms, is proposed. This new framework is then used to study several previously proposed frameworks and their interrelationships. For example, the framework based on the overlapping rounding
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