MATLAB中的按位滤色器 [英] Bitwise color filter in MATLAB

问题描述

是否存在执行以下操作的MATLAB函数:

Is there a MATLAB function that does the following:

对于图像输入，它告诉我比我选择的特定颜色深多少比例的位.

For an image input, it tells me what proportion of the bits are darker than a particular color of my choosing.

因此，如果我输入棋盘的图像并使用灰色，则输出大约为一半. (不过，我需要以这种方式处理的图像并不是那么简单)

So if I entered an image of a chess board and used the color gray, the output would be roughly one half. (the image I need to process in this way is not that simple, though)

推荐答案

function CompareMap = BitWiseCompare('filename',c) % c = [R , G , B];
A = imread('filename');
CompareMap = zeros([size(A,1),size(A,2)]);
CompareMap = (A(:,:,1) < c(1)).*(A(:,:,2) < c(2)).*(A(:,:,3) < c(3));
end

例如，

带有CompareMap = BitWiseCompare('filename',[220 100 120]);给出

和CompareMap = BitWiseCompare('filename',[220 130 150]);

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