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J = <a href="%pathto:imop.vl_imintegral;">VL_IMINTEGRAL</a>(I) calculates the integral image J of the image
I.  I must a matrix with DOUBLE, SINGLE, UINT32, or INT32 storage
class. J is given by
</p><pre>
 J(i,j) = sum(I(1:i,1:j)).
</pre><p>
J has the same size as I and the same storage cla