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CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC

Abstract: 

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 video data. Due to vast file sizes and associated bitrates, it is desirable to compress raw high bit-depth 4:4:4 HD video sequences as much as possible without incurring a discernible decrease in visual quality. In this paper, we propose a Coding Block (CB)-level perceptual video coding technique for HEVC named Full Color Perceptual Quantization (FCPQ). FCPQ is designed to adjust the Quantization Parameter (QP) at the CB level — i.e., the luma CB and the chroma Cb and Cr CBs — according to the variances of pixel data in each CB. FCPQ is based on the default perceptual quantization method in HEVC called AdaptiveQP. AdaptiveQP adjusts the QP of an entire 2N×2N CU based only on the spatial activity of the constituent luma CB. As demonstrated in this paper, by not accounting for the spatial activity of the constituent chroma CBs, as is the case with AdaptiveQP, coding performance can be significantly affected; this is because the variance of pixel data in a luma CB is notably different from the variances of pixel data in chroma Cb and Cr CBs. FCPQ, therefore, addresses this problem. In terms of coding performance, FCPQ achieves BD-Rate improvements of up to 39.5% (Y), 16% (Cb) and 29.9% (Cr) compared with AdaptiveQP.

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Paper Details

Authors:
Lee Prangnell, Miguel Hernández-Cabronero, Victor Sanchez
Submitted On:
12 September 2017 - 2:59pm
Short Link:
Type:
Poster
Event:
Presenter's Name:
Victor Sanchez
Document Year:
2017
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[1] Lee Prangnell, Miguel Hernández-Cabronero, Victor Sanchez, "CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC", IEEE SigPort, 2017. [Online]. Available: http://sigport.org/1948. Accessed: Sep. 24, 2017.
@article{1948-17,
url = {http://sigport.org/1948},
author = {Lee Prangnell; Miguel Hernández-Cabronero; Victor Sanchez },
publisher = {IEEE SigPort},
title = {CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC},
year = {2017} }
TY - EJOUR
T1 - CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC
AU - Lee Prangnell; Miguel Hernández-Cabronero; Victor Sanchez
PY - 2017
PB - IEEE SigPort
UR - http://sigport.org/1948
ER -
Lee Prangnell, Miguel Hernández-Cabronero, Victor Sanchez. (2017). CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC. IEEE SigPort. http://sigport.org/1948
Lee Prangnell, Miguel Hernández-Cabronero, Victor Sanchez, 2017. CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC. Available at: http://sigport.org/1948.
Lee Prangnell, Miguel Hernández-Cabronero, Victor Sanchez. (2017). "CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC." Web.
1. Lee Prangnell, Miguel Hernández-Cabronero, Victor Sanchez. CODING BLOCK-LEVEL PERCEPTUAL VIDEO CODING FOR 4:4:4 DATA IN HEVC [Internet]. IEEE SigPort; 2017. Available from : http://sigport.org/1948