MATLAB: Stuck here ,please help me out,if there are some more mistakes give the solution

image segmentation

This is the part of mean shift segmentation code
while ~done
      weightAccum = 0;
      yAccum = 0;
      % only 99.75% area (3sigma) of the entire non-zero Gaussian kernel is considered
      for i = -3*hs:3*hs  % hs is spatial kernel
          for j = -3*hs:3*hs
              % spatial kernel weight 
              spatialKernel = exp(-(i^2+j^2)/(hs^2/2));
              xThis =  xPad(height+i:2*height+i-1, width+j:2*width+j-1, 1:depth);
              xDiff = abs(y-xThis);
              xDiffSq = xDiff.^2./hf^2; % hf is feature kernel
              % deal with multi-channel image
              if depth > 1
                  xDiffSq = repmat(sum(xDiffSq,3),[1,1,depth]);
              end
              % feature kernel weight
              intensityKernel = exp(-(xDiffSq)./2);
              % mixed kernel weight
              weightThis = spatialKernel.*intensityKernel.*xDiff;
              % update accumulated weights
              weightAccum = weightAccum+ weightThis;
              % update accumulated estimated ys from xs 
              yAccum = yAccum+xThis.*weightThis;
          end
      end
      % normalized y 
      yThis = yAccum./(weightAccum+eps);
      % convergence criterion
      yMSE = mean((yThis(:)-y(:)).^2);
      if yMSE <= th % exit if converge
          done = 1;
      else % otherwise update estimated y and repeat mean shift
          y = yThis;
          iter = iter+1;
          if plotOn
              drawnow, imshow(uint8(y)),axis image, title(['iteration times = ' num2str(iter) '; mse = ' num2str(yMSE)]);
          end
      end
  end
stuck here
??? Error using ==> times Integers can only be combined with integers of the same class, or scalar doubles.
Error in ==> meanShiftseg at 50 weightThis = spatialKernel.*intensityKernel.*xDiff;
Error in ==> meanshiftdemo at 83 y = meanShiftseg(x,8,10);

Best Answer

Cast them all to doubles before you multiply.
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