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Spatiotemporal Adaptive Quantization for the Perceptual Video Coding of RGB 4:4:4 Data
Lee Prangnell, Victor Sanchez
Due to the spectral sensitivity phenomenon of the Human Visual System (HVS), the color channels of raw RGB 4:4:4 sequences contain significant psychovisual redundancies; these redu…
Spatiotemporal Adaptive Quantization for Video Compression Applications
Lee Prangnell
JCT-VC HEVC HM 16 includes a Coding Unit (CU) level adaptive Quantization Parameter (QP) technique named AdaptiveQP. It is designed to perceptually adjust the QP in Y, Cb and Cr Co…
Frequency-Dependent Perceptual Quantisation for Visually Lossless Compression Applications
Lee Prangnell
The default quantisation algorithms in the state-of-the-art High Efficiency Video Coding (HEVC) standard, namely Uniform Reconstruction Quantisation (URQ) and Rate-Distortion Optim…
Coding Block-Level Perceptual Video Coding for 4:4:4 Data in HEVC
Lee Prangnell, Miguel Hernández-Cabronero, Victor Sanchez
There is an increasing consumer demand for high bit-depth 4:4:4 HD video data playback due to its superior perceptual visual quality compared with standard 8-bit subsampled 4:2:0 v…