TY - JOUR
T1 - “Image Resolution Conversion Method Using Spatial Scalability”
AU - Ishikawa, Takaaki
AU - Watanabe, Hiroshi
PY - 2005/1
Y1 - 2005/1
N2 - Recently, the importance of SNR and spatial scalability in image coding has been increased. JPEG 2000 has advanced SNR and spatial scalability functions. However, the spatial scalability of JPEG 2000 is limited to the cases where decimated resolutions are 1/22 of the source image resolution. Therefore, Digital-Cinema resolution cannot be converted to SDTV or QVGA size image by decoding the JPEG 2000 bitstream directly. We propose a resolution conversion method using spatial scalability, which combines LL sub-band with a decimation filter. Experimental results confirm an improvement in PSNR of 1-2 dB as compared to conventional resolution conversion methods.
AB - Recently, the importance of SNR and spatial scalability in image coding has been increased. JPEG 2000 has advanced SNR and spatial scalability functions. However, the spatial scalability of JPEG 2000 is limited to the cases where decimated resolutions are 1/22 of the source image resolution. Therefore, Digital-Cinema resolution cannot be converted to SDTV or QVGA size image by decoding the JPEG 2000 bitstream directly. We propose a resolution conversion method using spatial scalability, which combines LL sub-band with a decimation filter. Experimental results confirm an improvement in PSNR of 1-2 dB as compared to conventional resolution conversion methods.
KW - Digital Cinema
KW - JPEG 2000
KW - Resolution conversion
KW - Spatial scalability
UR - http://www.scopus.com/inward/record.url?scp=85024750188&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85024750188&partnerID=8YFLogxK
U2 - 10.11371/iieej.34.548
DO - 10.11371/iieej.34.548
M3 - Article
AN - SCOPUS:85024750188
SN - 0285-9831
VL - 34
SP - 548
EP - 557
JO - Journal of the Institute of Image Electronics Engineers of Japan
JF - Journal of the Institute of Image Electronics Engineers of Japan
IS - 5
ER -