DETECTION METHOD FOR LUMINANCE OF COLOR FILTER

Japanese Patent JP3476042

B2

PROBLEM TO BE SOLVED: To obtain a detection method in which the measuring error of luminance data on every pixel due to the deviation of the center line in the transverse direction of the pixel from the position of the pixel is reduced and in which the measuring error of luminance data on the pixel is reduced by faithfully integrating the output curve of the pixel.
SOLUTION: In a method, a filter is constituted in such a way that rectangular pixels in an identical shape are arranged side by side in the transverse direction and the longitudinal direction, a plurality of detection elements are allocated to one pixel by using an image sensor composed of detection elements in an identical size which is smaller than that of the pixels, the luminance of the pixels is measured on the basis of their outputs, and the luminance of the color filter is detected. In this case, the output of the detection elements allocated to every pixel is set on the axis of ordinates and positions in the transverse direction of the respective detection elements are set on the axis of abscissas, an output curve which passes the outputs of the respective detection elements is found, and a value obtained by integrating the output curve in a definite range by making use of the center line in the transverse direction of every pixel as a reference is regarded as the one-dimensional luminance of every pixel.

Akihiro Yamamoto
Hisao Nakamura
Toshiaki Ogawa
Tomohiko Shioda
Keizo Oishi

JP25072595A

December 10, 2003

September 28, 1995

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Ishikawajima Harima Heavy Industries Co., Ltd.

G01J1/02; G01J1/42; (IPC1-7): G01J1/02; G01J1/42

JP611679A
JP560603A
JP6221811A
JP875542A
JP5240802A

Minoru Hotta (2 outside)

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