Reducing power consumption of HEVC codec with lossless reference frame recompression
- Resource Type
- Conference
- Authors
- Zhou, Dajiang; Guo, Li; Zhou, Jinjia; Goto, Satoshi
- Source
- 2014 IEEE International Conference on Image Processing (ICIP) Image Processing (ICIP), 2014 IEEE International Conference on. :2120-2124 Oct, 2014
- Subject
- Components, Circuits, Devices and Systems
Decoding
Video coding
Encoding
Throughput
Codecs
Algorithm design and analysis
Random access memory
H.265
HEVC
H.264
AVC
embedded compression
lossless
frame recompression
video decoder
video encoder
power consumption
- Language
- ISSN
- 1522-4880
2381-8549
Motion estimation and motion compensation in HEVC and similar video codecs involve huge memory traffic in storing and loading reference frames. The resulting memory power composes a significant portion of system energy consumption. This paper presents a memory power reduction framework that losslessly compresses and decompresses reference frames on-the-fly. We first present the architecture that supports the random access of frame data compressed in variable ratios. The latest recompression algorithms and the corresponding VLSI implementation are also introduced. The framework has been implemented in several UHDTV ASIC and FPGA codecs. Experiments under HEVC common test conditions show an average memory traffic reduction of near 60%.