How I can divide a color image in to blocks and access the RGB of each individual block?

I have tried using blockproc(), but could not get it.

Answer 1

[Image Analyst]

See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_split_an_image_into_non-overlapping_blocks.3F

[syed musa]

Thank you for helping.

[syed musa]

Sir, Could you help me in extracting the shape of a object in color image

[Image Analyst]

% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);

% Threshold
redBlobs = redChannel > 200 & greenChannel < 40 & blueChannel < 70; % or whatever.

labeledImage = bwlabel(redBlobs);
measurements = regionprops(labeledImage, 'all');
allAreas = [measurements.Area];
allPerimeters = [measurements.Perimeter];
allECD = [measurements.EquivDiameter];
allCircularities = allPerimeters.^2 ./ (4 * pi * allAreas);

Answer 2

[yagnesh]

y=imread('colorimage.jpg');

R=y(:,:,1);

G=y(:,:,2);

B=y(:,:,3);

in this way you can saperate