Normalizing RGB image
in [Matlab]
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From: ddd ddddd on 10 Oct 2009 10:50 "Tony " <ewizlab(a)gmail.com> wrote in message <h31h96$h35$1(a)fred.mathworks.com>... > The above discussed algorithm in code > > % Normalizing RGB image > % Tony Gladvin George > > Image_rgb = imread('image.jpg'); > Image_rgb = imresize(Image_rgb, [400 400]); > Image_rgb = double(Image_rgb); > %figure;imshow(uint8(Image_rgb)); > > Image_red = Image_rgb(:,:,1); > Image_green = Image_rgb(:,:,2); > Image_blue = Image_rgb(:,:,3); > %figure;imshow(uint8(Image_red)); > > [row,col] = size(Image_rgb(:,:,1)); > > for y = 1:row %-->numberof rows in image > for x = 1:col %-->number of columns in the image > Red = Image_red(y,x); > Green = Image_green(y,x); > Blue = Image_blue(y,x); > > NormalizedRed = Red/sqrt(Red^2 + Green^2 + Blue^2); > NormalizedGreen = Green/sqrt(Red^2 + Green^2 + Blue^2); > NormalizedBlue = Blue/sqrt(Red^2 + Green^2 + Blue^2); > > Image_red(y,x) = NormalizedRed; > Image_green(y,x) = NormalizedGreen; > Image_blue(y,x) = NormalizedBlue; > end > end > > Image_rgb(:,:,1) = Image_red; > Image_rgb(:,:,2) = Image_green; > Image_rgb(:,:,3) = Image_blue; > > Image_rgb = Image_rgb .* Image_rgb; > Image_rgb = Image_rgb .* Image_rgb; > > figure; imshow(Image_rgb); thank u for this but when i paste this code in an m file and run it gives an error ??? Error using ==> normalize at 43 A must be an ATOM. when i click on normalize at 43 it appears normailze is some function...and matlab opens that for me what should do to debug code without error?
From: ddd ddddd on 10 Oct 2009 11:08 "ddd ddddd" <ddd(a)dd.com> wrote in message <haq6ur$bmk$1(a)fred.mathworks.com>... > "Tony " <ewizlab(a)gmail.com> wrote in message <h31h96$h35$1(a)fred.mathworks.com>... > > The above discussed algorithm in code > > > > % Normalizing RGB image > > % Tony Gladvin George > > > > Image_rgb = imread('image.jpg'); > > Image_rgb = imresize(Image_rgb, [400 400]); > > Image_rgb = double(Image_rgb); > > %figure;imshow(uint8(Image_rgb)); > > > > Image_red = Image_rgb(:,:,1); > > Image_green = Image_rgb(:,:,2); > > Image_blue = Image_rgb(:,:,3); > > %figure;imshow(uint8(Image_red)); > > > > [row,col] = size(Image_rgb(:,:,1)); > > > > for y = 1:row %-->numberof rows in image > > for x = 1:col %-->number of columns in the image > > Red = Image_red(y,x); > > Green = Image_green(y,x); > > Blue = Image_blue(y,x); > > > > NormalizedRed = Red/sqrt(Red^2 + Green^2 + Blue^2); > > NormalizedGreen = Green/sqrt(Red^2 + Green^2 + Blue^2); > > NormalizedBlue = Blue/sqrt(Red^2 + Green^2 + Blue^2); > > > > Image_red(y,x) = NormalizedRed; > > Image_green(y,x) = NormalizedGreen; > > Image_blue(y,x) = NormalizedBlue; > > end > > end > > > > Image_rgb(:,:,1) = Image_red; > > Image_rgb(:,:,2) = Image_green; > > Image_rgb(:,:,3) = Image_blue; > > > > Image_rgb = Image_rgb .* Image_rgb; > > Image_rgb = Image_rgb .* Image_rgb; > > > > figure; imshow(Image_rgb); > > > thank u for this but when i paste this code in an m file and run it gives an error > ??? Error using ==> normalize at 43 > A must be an ATOM. > > when i click on normalize at 43 it appears normailze is some function...and matlab opens that for me > > what should do to debug code without error? sry that was my mistake....i named my m file as normalize rbg.m and therefore when i was running that it was running normalize.m which is predefined in some toolbox? neways thank u very much for the code
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