Lines Matching refs:edge
127 % o lower_precent: percentage of edge pixels in the lower threshold.
129 % o upper_percent: percentage of edge pixels in the upper threshold.
164 edge,
183 if (GetMatrixElement(canny_cache,0,0,&edge) == MagickFalse)
185 edge.x=x;
186 edge.y=y;
187 if (SetMatrixElement(canny_cache,0,0,&edge) == MagickFalse)
195 status=GetMatrixElement(canny_cache,i,0,&edge);
207 if (IsAuthenticPixel(edge_image,edge.x+u,edge.y+v) == MagickFalse)
210 Not an edge if gradient value is below the lower threshold.
212 q=GetCacheViewAuthenticPixels(edge_view,edge.x+u,edge.y+v,1,1,
216 status=GetMatrixElement(canny_cache,edge.x+u,edge.y+v,&pixel);
226 edge.x+=u;
227 edge.y+=v;
228 status=SetMatrixElement(canny_cache,i,0,&edge);
419 of an edge.
1729 % Use HoughLineImage() in conjunction with any binary edge extracted image (we