what is an R-B feature image,how to convert an RGB image to R-B feature image? ,plase give code in matlab?

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shamili 2015-1-10

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评论： shamili 2015-1-10

采纳的回答： Image Analyst

what is an R-B feature image,how to convert an RGB image to R-B feature image? ,plase give code in matlab?

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Image Analyst 2015-1-10

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% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);
redMinusBlue = double(radChannel) - double(blueChannel);
imshow(redMinusBlue, []);

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shamili 2015-1-10

thanku for this answer but it is giving that "Undefined function 'rgbImage' for input arguments of type 'char'.

shamili 2015-1-10

yaahh its working...thanq very much.

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