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7—1 γ校正(灰度校正)电路 7—1—1 γ(伽玛)值的含意在电视系统中,如果显像端电视图像的各点亮度正比于摄像端被摄体相应的各点亮度,这就正确重现了被摄体各点之间的灰度比。设B_1代表被摄体某点的亮度,B_2代表显象端图像上相应的亮度,则B_2=KB_1~γ,当γ=1时,B_2与B_1呈正比关系,当γ≠1时,B_2与B_1不
7-1 γ Correction (Grayscale Correction) Circuit 7-1-1 Significance of γ (Gamma) Value In a television system, if the brightness of each point of the television picture of the display side is proportional to the respective point of the subject of the video side Brightness, which correctly reproduces the gray ratio between the points of the subject. Suppose B_1 represents the brightness of a point of the subject and B_2 represents the corresponding brightness of the image on the image side, B_2 = KB_1 ~ γ. When γ = 1, B_2 is proportional to B_1. When γ ≠ 1, B_1 not