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Relevant bibliographies by topics / Perceptually lossless quality

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Academic literature on the topic 'Perceptually lossless quality'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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Journal articles on the topic "Perceptually lossless quality"

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SREELEKHA, G., and P. S. SATHIDEVI. "A WAVELET-BASED PERCEPTUAL IMAGE CODER INCORPORATING A NEW MODEL FOR COMPRESSION OF COLOR IMAGES." International Journal of Wavelets, Multiresolution and Information Processing 07, no. 05 (September 2009): 675–92. http://dx.doi.org/10.1142/s0219691309003197.

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A wavelet-based perceptual image coder for the compression of color images is proposed here in which the coding structure is coupled with Human Visual System models to produce high quality images. The major contribution is the development of a new model for the compression of the color components based on psychovisual experiments, which quantifies the optimum amount of compression that can be applied to the color components for a given rate. The model is developed for YCbCr color space and the perceptually uniform CIE Lab color space. A complete coding structure for the compression of color im

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Singh, Abhilasha, and Malay Kishore Dutta. "A Reversible Data Hiding Scheme for Efficient Management of Tele-Ophthalmological Data." International Journal of E-Health and Medical Communications 8, no. 3 (July 2017): 38–54. http://dx.doi.org/10.4018/ijehmc.2017070103.

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Advancements in medical sciences and induction of advanced technologies have led to increased role of medical images in tele-diagnosis. This paper proposes a technique for easy, efficient and accurate management of distributed medical databases and alleviates the risk of any distortion in images during transmission. It also provides remedy of issues like tampering, accidentally or intentionally, authentication and reliability without affecting the perceptual properties of the image. The technique is blind and completely reversible. Values of PSNR and BER imply that the changes made to original

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Zadeh, Pooneh Bagheri, Akbar Sheikh Akbari, and Tom Buggy. "DCT image codec using variance of sub-regions." Open Computer Science 5, no. 1 (August 11, 2015): 13–21. http://dx.doi.org/10.1515/comp-2015-0003.

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AbstractThis paper presents a novel variance of subregions and discrete cosine transform based image-coding scheme. The proposed encoder divides the input image into a number of non-overlapping blocks. The coefficients in each block are then transformed into their spatial frequencies using a discrete cosine transform. Coefficients with the same spatial frequency index at different blocks are put together generating a number of matrices, where each matrix contains coefficients of a particular spatial frequency index. The matrix containing DC coefficients is losslessly coded to preserve its visu

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"Effects of Compression Algorithms and Identification of Cancer cell using CT Coronel View Lung Image." International Journal of Engineering and Advanced Technology 8, no. 6 (August 30, 2019): 103–5. http://dx.doi.org/10.35940/ijeat.b5552.088619.

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Modern radiology techniques provide crucial medical information for radiologists to diagnose diseases and determine appropriate treatments. Hence dealing with medical image compression needs to compromise on good perceptual quality (i.e. diagnostically lossless) and high compression rate. The objective also includes finding out an optimum algorithm for medical image compression algorithm. The objective is also focused towards the selection of the developed image compression algorithm, which do not change the characterization behavior of the image.

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S, Dr Rohith, and Harish V. "A Reversible Data Hiding Scheme in Encrypted Images for Medical Applications." International Journal of Advanced Research in Science, Communication and Technology, February 10, 2021, 166–72. http://dx.doi.org/10.48175/ijarsct-776.

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Storage and exchange of data of the patient images are common in medical applications. To protect the information of the patient and to avoid miss handling of the patient information data hiding scheme is very much essential. Reversible Data Hiding (RDH) scheme is one such scheme paid more attention to hide the data in encrypted images, since it maintains the excellent property that the original cover can be lossless recovered after embedded data is extracted while protecting the image content’s confidentiality. In this paper initially space is reserved from the encrypted images, which may be

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Fineman, Daniel. "The Anomaly of Anomaly of Anomaly." M/C Journal 23, no. 5 (October 7, 2020). http://dx.doi.org/10.5204/mcj.1649.

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‘Bitzer,’ said Thomas Gradgrind. ‘Your definition of a horse.’‘Quadruped. Graminivorous. Forty teeth, namely twenty-four grinders, four eye-teeth, and twelve incisive. Sheds coat in the spring; in marshy countries, sheds hoofs, too. Hoofs hard, but requiring to be shod with iron. Age known by marks in mouth.’ Thus (and much more) Bitzer.‘Now girl number twenty,’ said Mr. Gradgrind. ‘You know what a horse is.’— Charles Dickens, Hard Times (1854)Dickens’s famous pedant, Thomas Gradgrind, was not an anomaly. He is the pedagogical manifestation of the rise of quantification in modernism that was t

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Dissertations / Theses on the topic "Perceptually lossless quality"

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Wu, David, and dwu8@optusnet com au. "Perceptually Lossless Coding of Medical Images - From Abstraction to Reality." RMIT University. Electrical & Computer Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080617.160025.

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This work explores a novel vision model based coding approach to encode medical images at a perceptually lossless quality, within the framework of the JPEG 2000 coding engine. Perceptually lossless encoding offers the best of both worlds, delivering images free of visual distortions and at the same time providing significantly greater compression ratio gains over its information lossless counterparts. This is achieved through a visual pruning function, embedded with an advanced model of the human visual system to accurately identify and to efficiently remove visually irrelevant/insignificant i

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Oh, Han. "Perceptual Image Compression using JPEG2000." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/202996.

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Image sizes have increased exponentially in recent years. The resulting high-resolution images are typically encoded in a lossy fashion to achieve high compression ratios. Lossy compression can be categorized into visually lossless and visually lossy compression depending on the visibility of compression artifacts. This dissertation proposes visually lossless coding methods as well as a visually lossy coding method with perceptual quality control. All resulting codestreams are JPEG2000 Part-I compliant.Visually lossless coding is increasingly considered as an alternative to numerically lossles

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Book chapters on the topic "Perceptually lossless quality"

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Singh, Abhilasha, and Malay Kishore Dutta. "A Reversible Data Hiding Scheme for Efficient Management of Tele-Ophthalmological Data." In Ophthalmology, 172–88. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5195-9.ch011.

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Abstract:

Advancements in medical sciences and induction of advanced technologies have led to increased role of medical images in tele-diagnosis. This paper proposes a technique for easy, efficient and accurate management of distributed medical databases and alleviates the risk of any distortion in images during transmission. It also provides remedy of issues like tampering, accidentally or intentionally, authentication and reliability without affecting the perceptual properties of the image. The technique is blind and completely reversible. Values of PSNR and BER imply that the changes made to original images are imperceptible to the Human Visual System. Performance of the technique has been evaluated for fundus images and the results are extremely encouraging. The technique is lossless and conforms to the firm necessities of medical data management by maintaining perceptual quality and diagnostic significance of the images, therefore is very practical to be used in health care centers.

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