TY - JOUR
T1 - A still-image encoder based on adaptive resolution vector quantization featuring needless calculation elimination architecture
AU - Fujibayashi, Masanori
AU - Nozawa, Toshiyuki
AU - Nakayama, Takahiro
AU - Mochizuki, Kenji
AU - Konda, Masahiro
AU - Kotani, Koji
AU - Sugawa, Shigetoshi
AU - Ohmi, Tadahiro
PY - 2003/5
Y1 - 2003/5
N2 - A still-image encoder based on vector quantization (VQ) has been developed using 0.35-μm triple-metal CMOS technology for encoding a high-resolution still image. The chip employs the needless calculation elimination method and the adaptive resolution VQ (AR-VQ) technique. The needless calculation elimination method can reduce computational cost of VQ encoding to 40% or less of the full-search VQ encoding, while maintaining the accuracy of full-search VQ. AR-VQ realizes a compression ratio of over 1/200 while maintaining image quality. The processor can compress a still image of 1600 × 2400 pixels within 1 s and operates at 66 MHz with power dissipation of 660 mW under 2.5-V power supply, which is 1000 times larger performance per unit power dissipation than the software implementation on current PCs.
AB - A still-image encoder based on vector quantization (VQ) has been developed using 0.35-μm triple-metal CMOS technology for encoding a high-resolution still image. The chip employs the needless calculation elimination method and the adaptive resolution VQ (AR-VQ) technique. The needless calculation elimination method can reduce computational cost of VQ encoding to 40% or less of the full-search VQ encoding, while maintaining the accuracy of full-search VQ. AR-VQ realizes a compression ratio of over 1/200 while maintaining image quality. The processor can compress a still image of 1600 × 2400 pixels within 1 s and operates at 66 MHz with power dissipation of 660 mW under 2.5-V power supply, which is 1000 times larger performance per unit power dissipation than the software implementation on current PCs.
KW - High-resolution still-image compression
KW - Image compression
KW - Vector quantization
UR - http://www.scopus.com/inward/record.url?scp=0038190646&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0038190646&partnerID=8YFLogxK
U2 - 10.1109/JSSC.2003.810064
DO - 10.1109/JSSC.2003.810064
M3 - Article
AN - SCOPUS:0038190646
VL - 38
SP - 726
EP - 733
JO - IEEE Journal of Solid-State Circuits
JF - IEEE Journal of Solid-State Circuits
SN - 0018-9200
IS - 5
ER -