0001 function [param_list, warped_points, warped_image, score] = optimise_warps_nmi(ref_image, ref_points, unwarped_image, unwarped_points, spline_type, placement_method, n_points, verbose, do_plot, subplot_fig, pane, column, image_width, number_of_images, verbose_score, number_of_bins, precision_required)
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0049 [grid, steps] = setup_grid(2, unwarped_image, ref_points, placement_method, n_points);
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0053 if (do_plot),
0054 figure(subplot_fig);
0055 subplot(number_of_images, column, pane, 'replace');
0056 plot(unwarped_image);
0057 axis([0 image_width 0 1]);
0058 drawnow;
0059 end
0060
0061 warp_params.green = 'biharmCPS';
0062 param_list = [];
0063 start_image = unwarped_image;
0064 start_points = unwarped_points;
0065 last_score = nmi(ref_image, unwarped_image, number_of_bins);
0066 if(strcmp(spline_type,'single_point'))
0067 for i=1:size(grid,2)
0068 [params, score] = fminsearch(@eval_nmi_cps_warp,zeros(size(grid)),optimset('Display',verbose,'TolX', precision_required),grid,steps,start_points, start_image, ref_image, number_of_bins);
0069 param_list(size(param_list,1)+1).d = params;
0070 start_points = cps_warp_1d(start_points, grid(i), steps(i), params(1));
0071 start_image = interp1(ref_points,unwarped_image,start_points, 'linear',0);
0072 last_score = score;
0073 end
0074 elseif(strcmp(spline_type,'multi_point'))
0075 warped_grid = grid;
0076 warp_params.green = 'biharmCPS';
0077 last_score = eval_nmi_multi_warp(zeros(size(grid)),grid, unwarped_image, unwarped_points, ref_image, ref_points, 20, warp_params, number_of_bins);
0078 [params, score] = fminsearch(@eval_nmi_multi_warp,zeros(size(grid)),optimset('Display',verbose,'TolX',precision_required),grid, unwarped_image, unwarped_points, ref_image, ref_points, 20, warp_params, number_of_bins);
0079 param_list(size(param_list,1)+1,:).d = params;
0080 warped_grid = grid + params;
0081 start_points = nrr_trans_1d(start_points, grid, warped_grid, warp_params,[]);
0082 start_image = interp1(unwarped_points,unwarped_image,start_points, 'linear',0);
0083 else
0084 error('Unknown spline type');
0085 end
0086
0087 if (verbose_score == 1),
0088 disp(['Initial score: ',num2str(last_score),' Final score: ', num2str(score), ' Difference: ', num2str(last_score - score)]);
0089 end
0090
0091 warped_points = start_points;
0092 warped_image = start_image;
0093
0094 if (do_plot),
0095 figure(subplot_fig);
0096 subplot(number_of_images, column, pane, 'replace');
0097 plot(warped_image);
0098 axis([0 image_width 0 1]);
0099 title(num2str(score));
0100 drawnow;
0101 end