Results 21 to 30 of about 75,296 (317)
HEVC perceptual intra-frame rate control inspired by video subjective observation experiment
Tongxin xuebao, 2021 In view of the low perceptual rate-distortion performance of the rate control method used in high efficiency video coding (HEVC), an intra-frame rate control algorithm to effectively improve the perceptual rate-distortion performance of video was ...
Yanchao GONG +5 more
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Evaluation of a Framework for Robust Image Reversible Watermarking
Applied Sciences, 2022 In the literature, robust reversible watermarking schemes (RWSs) allow the extraction of watermarks after the images have suffered attacks; however, the modified images are compromised.
Jose Juan Garcia-Hernandez +3 more
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JPEG2000 encoding with perceptual distortion control [PDF]
IEEE Transactions on Image Processing, 2004 In this paper, a new encoding approach is proposed to control the JPEG2000 encoding in order to reach a desired perceptual quality. The new method is based on a vision model that incorporates various masking effects of human visual perception and a perceptual distortion metric that takes spatial and spectral summation of individual quantization errors ...
Zhen, Liu +2 more
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Perceptual Distortions of 3-D Finger Size [PDF]
Perception, 2019 Our body is a volumetric, three-dimensional (3-D) object in the world, and we experience it as such. Existing methods for measuring the perceptual body image, however, have been based on judgments of one-dimensional (1-D) length or two-dimensional images.
Ebru Ecem Tavacioglu +2 more
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Zulliger R-Optimized Application in Children Victims of Sexual Violence and Cancer
Paidéia (Ribeirão Preto), 2021 Child sexual violence can cause serious damage to the psychosocial development of its victims. Assessments in this context require the use of several psychological tests with proven validity for this purpose.
Eduardo dos Santos de Lima +2 more
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Analysis of the Perceptual Quality Performance of Different HEVC Coding Tools
IEEE Access, 2021 Each new video encoding standard includes encoding techniques that aim to improve the performance and quality of the previous standards. During the development of these techniques, PSNR was used as the main distortion metric.
Javier Ruiz Atencia +4 more
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A novel low complexity local hybrid pseudo-SSIM-SATD distortion metric towards perceptual rate control [PDF]
, 2013 The front-end block-based video encoder applies an Image Quality Assessment (IQA) as part of the distortion metric. Typically, the distortion metric applies uniform weighting for the absolute differences within a Sub-Macroblock (Sub-MB) at any given time.
Chang, Yoong Choon +4 more
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Depth perceptual video coding for free viewpoint video based on H.264/AVC [PDF]
, 2012 A novel scheme for depth sequences compression, based on a perceptual coding algorithm, is proposed. A depth sequence describes the object position in the 3D scene, and is used, in Free Viewpoint Video, for the generation of synthetic video sequences. In
Cabrera Quesada, Julian +4 more
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JND-Based Perceptual Video Coding for 4:4:4 Screen Content Data in HEVC [PDF]
, 2018 The JCT-VC standardized Screen Content Coding (SCC) extension in the HEVC HM RExt + SCM reference codec offers an impressive coding efficiency performance when compared with HM RExt alone; however, it is not significantly perceptually optimized.
Prangnell, Lee, Sanchez, Victor
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Perceptual distortion of paired stimuli [PDF]
Psychonomic Science, 1967 Pairing two discriminably different tones with intense shock and mild shock, respectively, caused a perceptual distortion of shock intensity. Magnitude of the distortion was related to the interval between tone and shock.
Ben W. Feather, David T. Wells
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