Implement the following Matlab function:

function H = CV_Hough_shape(im,shape)
%
% CV_Hough_shape - calculate Hough accumulator for shape
%On input:
%     im (mxn array): input image
%     shape (kx2 array): Hough shape model
%On output:
%     H (pxq array): Hough shape accumulator
%Call:
%  H = CV_Hough_shape(im,s_circle);
%Author:
%  Your name
%  UU
%  Fall 2012
%