Graphics Reference
In-Depth Information
Comparative Study of Near-Lossless Compression by
JPEG XR, JPEG 2000, and H.264 on 4K Video Sequences
Wang Dan
China Academy of Space Technology, Beijing 100094, China
wangdan05@gmail.com
Abstract. Lossless or near-lossless compression for high resolution image is
required to meet the increasingly high quality demands in various application
fields. With respect to this requirement, ultra-high definition image/video
compression technology is researched in this papar. We first delve into the
JPEG XR compression algorithm and parameters, then report a comparative
study evaluating rate-distortion performance between JPEG XR, H.264 and
JPEG 2000. A set of five sequences with resolution of 4K(3840x2160) have
been used. The Result shows that, for the test sequences used to carry out the
experiments, the JPEG XR outperforms other two coding standards in terms of
the trade off between compression efficiency and hardware complexity.
Keywords: JPEG XR, JPEG 2000, H.264, 4K.
1
Introduction
In most application fields, the image/video quality is the higher the better from the
user's perspective, however, due to the limited channel and storage resources, the
image/video has to be compressed. To meet the high quality requirement, there is an
urgent need to find the proper video compression standard and tools for high resolu-
tion video sequences, with considering the tradeoff between coding efficiency and
hardware complexity, to achieve the lossless or near-lossless compression result.
For this need, we first introduce the new international compression standard JPEG
XR in Section 2, where we also made some exploration and research of JPEG XR
tools. In Section 3, a comparative study evaluating rate-distortion performance be-
tween JPEG XR, H.264 and JPEG 2000 and the experiment result is given. Finally we
conclude our work in Section 4.
2
Study on JPEG XR
2.1
JPEG XR Introduction
JPEG XR [1] is an international image coding standard, based on HD Photo devel-
oped by Microsoft technology. It is designed for the high dynamic range (HDR) and
the high definition (HD) photo size. The XR of JPEG XR means the extended range.
 
Search WWH ::




Custom Search