How to detect Hue from HSV image for individual objects

Hi everyone, I was wondering how to detect the average hue value for a series of different objects. I've detected the bounding box for each object, from region props, and now wish to determine the hue value for the bounding box square.

Any help is greatly appreciated

for i=1:CC.NumObjects;
        r=(groupdata(i).BoundingBox(2):groupdata(i).BoundingBox(2)+groupdata(i).BoundingBox(3));
        c=(groupdata(i).BoundingBox(1):groupdata(i).BoundingBox(1)+groupdata(i).BoundingBox(3));
        P{i} = HSVimage(:,:,1);
end

Answer 1

[Walter Roberson]

mean2(P{i}(r,c))

[Ian]

I've been trying this but keep getting the following error. Any ideas? Thanks for your help

Error using subsindex
Function 'subsindex' is not defined for values of class 'cell'.

[Ian]

No worries I worked it out, it works with the below. The error was not rounding. Thanks again.

for i=1:CC.NumObjects;
        r{i}=(groupdata(i).BoundingBox(2):groupdata(i).BoundingBox(2)+groupdata(i).BoundingBox(3));
        c{i}=(groupdata(i).BoundingBox(1):groupdata(i).BoundingBox(1)+groupdata(i).BoundingBox(3));
        Pix{i} = HSVim(:,:,1);
        r{i}=round(r{i});
        c{i}=round(c{i});
        MeanPixel{i}=mean2(Pix{i} (r{i}, c{i}));
        hold on
end

[Image Analyst]

Why are you messing with cell arrays? Why make it complicated? Just use regular numerical arrays.