int numangle = cvRound((max_theta - min_theta) / theta);
int numrho = cvRound(((width + height) * 2 + 1) / rho);
+#if (defined(HAVE_IPP) && IPP_VERSION_MAJOR >= 8)
+ IppiSize srcSize = { width, height };
+ IppPointPolar delta = { rho, theta };
+ IppPointPolar dstRoi[2] = {{(Ipp32f) -(width + height), (Ipp32f) min_theta},{(Ipp32f) (width + height), (Ipp32f) max_theta}};
+ int bufferSize;
+ int ipp_linesMax = std::min(linesMax, numangle*numrho);
+ int linesCount = 0;
+ lines.resize(ipp_linesMax);
+ IppStatus ok = ippiHoughLineGetSize_8u_C1R(srcSize, delta, ipp_linesMax, &bufferSize);
+ Ipp8u* buffer = ippsMalloc_8u(bufferSize);
+ if (ok >= 0) ok = ippiHoughLine_Region_8u32f_C1R(image, step, srcSize, (IppPointPolar*) &lines[0], dstRoi, ipp_linesMax, &linesCount, delta, threshold, buffer);
+ ippsFree(buffer);
+ if (ok >= 0)
+ {
+ lines.resize(linesCount);
+ return;
+ }
+#endif
+
AutoBuffer<int> _accum((numangle+2) * (numrho+2));
std::vector<int> _sort_buf;
AutoBuffer<float> _tabSin(numangle);