TY - GEN
T1 - Noiseless no-flash photo creation by color transform of flash image
AU - Shirai, Keiichiro
AU - Okamoto, Masayuki
AU - Ikehara, Masaaki
PY - 2011/12/1
Y1 - 2011/12/1
N2 - In the dark place photographing, the increase of noise is one of the major problems to be addressed. Although using a flash is effective to reduce the noise, natural colors are faded away due to increase of specular lights. In this paper, we present a method that generates a no-flash like flash image by approximating colors of a flash image by those of a no-flash image. Our method is based on the "color-line" feature of images, a linear distribution of colors in a local region is transformed by a set of transform matrices automatically. This method is able to deal correctly with the occluded regions where the colors are saturated by reflections or shadows and the color distribution is squashed.
AB - In the dark place photographing, the increase of noise is one of the major problems to be addressed. Although using a flash is effective to reduce the noise, natural colors are faded away due to increase of specular lights. In this paper, we present a method that generates a no-flash like flash image by approximating colors of a flash image by those of a no-flash image. Our method is based on the "color-line" feature of images, a linear distribution of colors in a local region is transformed by a set of transform matrices automatically. This method is able to deal correctly with the occluded regions where the colors are saturated by reflections or shadows and the color distribution is squashed.
KW - color correction
KW - color-line
KW - denoising
KW - image restoration
KW - shadow correction
UR - http://www.scopus.com/inward/record.url?scp=84856244040&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84856244040&partnerID=8YFLogxK
U2 - 10.1109/ICIP.2011.6116451
DO - 10.1109/ICIP.2011.6116451
M3 - Conference contribution
AN - SCOPUS:84856244040
SN - 9781457713033
T3 - Proceedings - International Conference on Image Processing, ICIP
SP - 3437
EP - 3440
BT - ICIP 2011
T2 - 2011 18th IEEE International Conference on Image Processing, ICIP 2011
Y2 - 11 September 2011 through 14 September 2011
ER -