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HDR image compression using optimized tone mapping model
2009 IEEE International Conference on Acoustics, Speech and Signal Processing, 2009 In this paper, we propose a coding algorithm for High Dynamic Range Images (HDRI). Our encoder applies a tone mapping model based on scaled μ-Lawencoding, followed by a conventional Low Dynamic Range Image (LDRI) encoder. The tone mapping model is designed to minimize the difference between the tone mappedHDRI and its LDR version.
Takao Jinno +2 more
exaly +3 more sources
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Visually-favorable tone-mapping with high compression performance
2010 IEEE International Conference on Image Processing, 2010We develop a tone-mapping operator (TMO) that considers the perceptual quality of the tone-mapped image together with the compression efficiency. The proposed TMO is formulated as an optimization problem that incorporates statistical models of i) the quality of the tone-mapped image given a desired TMO, ii) the base layer bit-rate and iii) the ...
Zicong Mai +2 more
exaly +2 more sources
Embedding high dynamic range tone mapping in JPEG compression
Proceedings of SPIE, 2013A method that integrates tone mapping for high dynamic range (HDR) gray-scale images with JPEG compression is proposed. The tone mapping operator (TMO) is block-based, and structured so that the same discrete cosine transform (DCT) that is used for the JPEG compression serves to complete a major part of the tone-mapping operation.
Jian Liu, Firas Hassan, Joan Carletta
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Compression Techniques are Lovable or Hateful: For Discrete Tone Images
2018 Second International Conference on Electronics, Communication and Aerospace Technology (ICECA), 2018The amount of data transmission especially images over internet are rapidly increasing day by day. The effective lossless image compression becomes a greater challenge now than ever. The efficiently compressed images can be useful to remotely access multimedia file at a faster rate with lesser burden on network infrastructure.
J Uthayakumar, T Vengattaraman
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Lossless compression of continuous-tone images via context selection, quantization, and modeling
IEEE Transactions on Image Processing, 1997Context modeling is an extensively studied paradigm for lossless compression of continuous-tone images. However, without careful algorithm design, high-order Markovian modeling of continuous-tone images is too expensive in both computational time and space to be practical.
Xiaolin Wu
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HDR tone mapping algorithm based on difference compression with adaptive reference values
Journal of Visual Communication and Image Representation, 2017A new local tone mapping method using adaptive reference is proposed.The detailness metric is proposed to measure detail loss in bright and dark regions.An objective quality assessment is developed to optimize parameters.The proposed method shows a good balance between detailness and naturalness.
Chungyong Lee
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Optimizing a Tone Curve for Backward-Compatible High Dynamic Range Image and Video Compression
IEEE Transactions on Image Processing, 2011For backward compatible high dynamic range (HDR) video compression, the HDR sequence is reconstructed by inverse tone-mapping a compressed low dynamic range (LDR) version of the original HDR content. In this paper, we show that the appropriate choice of a tone-mapping operator (TMO) can significantly improve the reconstructed HDR quality.
Zicong Mai +2 more
exaly +3 more sources
A new kind of HDR image tone compression algorithm
Proceedings 2013 International Conference on Mechatronic Sciences, Electric Engineering and Computer (MEC), 2013Ming Zhu
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Effect of Perineal Compression on the Rectal Tone
Diseases of the Colon & Rectum, 2003Digital pressure on the perineum was reported to result in an increase of the rectal tone. This effect has been related to a reflex action named perineorectal reflex but was not verified. The mechanism of action of perineal pressure on the rectal tone was studied.Eighteen healthy volunteers (mean age +/- standard deviation, 39.7 +/- 11.8 years; 10 ...
Ahmed, Shafik +2 more
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Compression of color images using a hologram of gray tones
SPIE Proceedings, 2007A strategy for to compress color images in digital holograms of gray tones was developed. The procedure codifies the information of each channel of the RGB model in a system of fringes, it is a gray image denominated "hologram". The fringes in their intensity of gray tone carry the signal of the channel, in this manner the amplitude information for ...
Alejandro Restrepo Martinez +1 more
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