image retrieval using Histogram Intersection

Hi,

I'm trying to retrieve images using histogram intersection distance measure. When i run the program, i got this error

" Error using ==> imgRetrievalSQRGB at 28 Assertion failed."

Can anyone tell me where have i gone wrong. Here is the code. Thanks.

function rIndex = imgRetrievalSQRGB(img,nRetrievedImgs)

%load histgoram computed in RGB space

trainDB =  '.\databaseSQ\';

fname = [trainDB, 'histRGBMat.mat'];

dbRGB = load(fname);

dbRGBMat = dbRGB.histRGBMat;

clear dbRGB;

noRow = size(img,1);

noCol = size(img,2);

imgR    = img(:,:,1);

histR   = imhist(imgR, 8);

imgG    = img(:,:,2);

histG   = imhist(imgG, 8);

imgB    = img(:,:,3);

histB   = imhist(imgB, 4);

histRGB = [histR; histG; histB];

histRGB = histRGB./noRow*noCol;

    m=size(histRGB,1); % number of samples of p

    p=size(dbRGBMat,2); % dimension of samples

    assert(p == size(histRGB,2)); % equal dimensions
    assert(size(dbRGBMat,1) == 1); % 

    hisInterDist=zeros(m,1); % initialize output array

    sxi=sum(dbRGBMat);

    for i=1:m

      hisInterDist(i,1) = 1 - (sum(min(dbRGBMat, histRGB(i,:))) / sxi);

    end

[~, indexR] = sort(hisInterDist);

rIndex      = indexR(1:nRetrievedImgs);

[Walter Roberson]

I recommend using the debugger and putting a breakpoint in at the first assert(), and testing the values to see which constraint is being violated.