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高い空間周波数を有する色彩信号に配慮したカラーデモゼイシング
高い空間周波数を有する色彩信号に配慮したカラーデモゼイシング
Color Demosaicing That Takes Care of Local Areas Rich in High Spatial Frequencies
開, 健太朗
高橋, 善寿
菊池, 久和
村松, 正吾
社団法人映像情報メディア学会
ディジタルカメラ
カラーデモゼイシング
単板式撮像デバイス
偽色
色差
digital camera
color demosaicing
A color demosaicing method has been developed that effectively performs within local areas that are rich in high spatial frequency variations. Such areas are likely to cause strong artifacts after demosaicing because of the inherent difficulty in subsampling. In visually tolerable image restoration, the spatial correlation between different color components is exploited to consistently maintain favorable transitions in the component intensities. Missing primary color values on the Bayer pattern color filter array are estimated using an edge-directed interpolation of primary color difference signals. The local transitions of the primary color differences are then smoothed by spatially adaptive filtering. Experimental results showed objectively-good and visually-preferable performance in terms of PSNR, CIELAB color difference and visual appearance, particularly resulting in less false color.
映像情報メディア学会
2007-08
jpn
journal article
http://hdl.handle.net/10191/9912
https://niigata-u.repo.nii.ac.jp/records/2761
AN10588970
13426907
映像情報メディア学会誌
映像情報メディア学会誌
61
8
1209
1217
https://niigata-u.repo.nii.ac.jp/record/2761/files/61(8)_1209-1213.pdf
application/pdf
381.8 kB
2019-07-29