Enhancing LTW image encoder with perceptual coding and GPU-optimized 2D-DWT transform
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...In the article entitled ‘Enhancing LTW image encoder with perceptual coding and GPU-optimized 2D-DWT transform’ [10] by Miguel Martínez-Rach et al....
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"Enhancing LTW image encoder with pe..." refers background or methods in this paper
...For the coding stage, if the absolute value of a coefficient and all its descendants (considering the classic quad-tree structure from [12]) is lower than a threshold value (2),the entire tree is encoded with a single symbol, which we call LOWER symbol (indicating that all the coefficients in the tree are lower than 2 and so they form a lower-tree)....
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...Wavelet transforms have reported good performance for image compression, therefore many state-of-the-art image codecs, including the JPEG2000 image coding standard, use the Discrete Wavelet Transform (DWT) [9,12]....
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...SPIHT [12], an advanced version of EZW, process the wavelet coefficient trees in a more efficient way by partitioning the coefficients depending on their significance....
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"Enhancing LTW image encoder with pe..." refers background in this paper
...One of the best behaving objective quality assessment metric is VIF [15], which has been proven [3,8] to have a better correlation with subjective perception than other metrics that are usually used for encoders comparisons [14,18]....
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...subjective tests results) [3,8,14,18]....
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