Wataru KONDO, Norimichi TSUMURA, Yoichi MIYAKE
Department of Information and Image Sciences,
Chiba University, 1-33, Yayoi-cho, Inage-ku
263-8522
Journal of The Society of Photographic Science and Technology of Japan, Vol.61, No.6 pp.343-351 (2001).
Abstract
Online-shopping became popular for vending
various articles via computer network. The
digital images of articles, however, do not
have enough information such as actual 3D
shape, texture, and color of objects. For
recording objects as digital images without
losing their color information, we consider
that the spectral reflectance is the most
desirable form. In this study, we discuss
an evaluation of the image reproduced from
those compressed multi-band images using
image distortion map considering human visual
characteristics. Furthermore, we discuss
optimal compression method with block adaptive
quantization based on the image distortion
map. Large error areas on the image distortion
map are finely quantized, while small error
areas are roughly quantized. As a result,
our proposed method reduces a compressed
file size by about four percent compared
with the conventional fixed quatization method.
Full paper ( to appeare )
[PDF] [PDF figures](in Japanese)