split CUDA Hough sources

2014-01-21 14:35:34 +04:00
parent 64244e160b
commit d847387694
9 changed files with 1330 additions and 939 deletions
--- a/modules/gpu/src/hough_lines.cpp
+++ b/modules/gpu/src/hough_lines.cpp
@@ -0,0 +1,142 @@
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
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+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
+// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//
+//   * The name of the copyright holders may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
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+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "precomp.hpp"
+
+using namespace std;
+using namespace cv;
+using namespace cv::gpu;
+
+#if !defined (HAVE_CUDA) || defined (CUDA_DISABLER)
+
+void cv::gpu::HoughLines(const GpuMat&, GpuMat&, float, float, int, bool, int) { throw_nogpu(); }
+void cv::gpu::HoughLines(const GpuMat&, GpuMat&, HoughLinesBuf&, float, float, int, bool, int) { throw_nogpu(); }
+void cv::gpu::HoughLinesDownload(const GpuMat&, OutputArray, OutputArray) { throw_nogpu(); }
+
+#else /* !defined (HAVE_CUDA) */
+
+namespace cv { namespace gpu { namespace device
+{
+    namespace hough
+    {
+        int buildPointList_gpu(PtrStepSzb src, unsigned int* list);
+    }
+}}}
+
+namespace cv { namespace gpu { namespace device
+{
+    namespace hough
+    {
+        void linesAccum_gpu(const unsigned int* list, int count, PtrStepSzi accum, float rho, float theta, size_t sharedMemPerBlock, bool has20);
+        int linesGetResult_gpu(PtrStepSzi accum, float2* out, int* votes, int maxSize, float rho, float theta, int threshold, bool doSort);
+    }
+}}}
+
+void cv::gpu::HoughLines(const GpuMat& src, GpuMat& lines, float rho, float theta, int threshold, bool doSort, int maxLines)
+{
+    HoughLinesBuf buf;
+    HoughLines(src, lines, buf, rho, theta, threshold, doSort, maxLines);
+}
+
+void cv::gpu::HoughLines(const GpuMat& src, GpuMat& lines, HoughLinesBuf& buf, float rho, float theta, int threshold, bool doSort, int maxLines)
+{
+    using namespace cv::gpu::device::hough;
+
+    CV_Assert(src.type() == CV_8UC1);
+    CV_Assert(src.cols < std::numeric_limits<unsigned short>::max());
+    CV_Assert(src.rows < std::numeric_limits<unsigned short>::max());
+
+    ensureSizeIsEnough(1, src.size().area(), CV_32SC1, buf.list);
+    unsigned int* srcPoints = buf.list.ptr<unsigned int>();
+
+    const int pointsCount = buildPointList_gpu(src, srcPoints);
+    if (pointsCount == 0)
+    {
+        lines.release();
+        return;
+    }
+
+    const int numangle = cvRound(CV_PI / theta);
+    const int numrho = cvRound(((src.cols + src.rows) * 2 + 1) / rho);
+    CV_Assert(numangle > 0 && numrho > 0);
+
+    ensureSizeIsEnough(numangle + 2, numrho + 2, CV_32SC1, buf.accum);
+    buf.accum.setTo(Scalar::all(0));
+
+    DeviceInfo devInfo;
+    linesAccum_gpu(srcPoints, pointsCount, buf.accum, rho, theta, devInfo.sharedMemPerBlock(), devInfo.supports(FEATURE_SET_COMPUTE_20));
+
+    ensureSizeIsEnough(2, maxLines, CV_32FC2, lines);
+
+    int linesCount = linesGetResult_gpu(buf.accum, lines.ptr<float2>(0), lines.ptr<int>(1), maxLines, rho, theta, threshold, doSort);
+    if (linesCount > 0)
+        lines.cols = linesCount;
+    else
+        lines.release();
+}
+
+void cv::gpu::HoughLinesDownload(const GpuMat& d_lines, OutputArray h_lines_, OutputArray h_votes_)
+{
+    if (d_lines.empty())
+    {
+        h_lines_.release();
+        if (h_votes_.needed())
+            h_votes_.release();
+        return;
+    }
+
+    CV_Assert(d_lines.rows == 2 && d_lines.type() == CV_32FC2);
+
+    h_lines_.create(1, d_lines.cols, CV_32FC2);
+    Mat h_lines = h_lines_.getMat();
+    d_lines.row(0).download(h_lines);
+
+    if (h_votes_.needed())
+    {
+        h_votes_.create(1, d_lines.cols, CV_32SC1);
+        Mat h_votes = h_votes_.getMat();
+        GpuMat d_votes(1, d_lines.cols, CV_32SC1, const_cast<int*>(d_lines.ptr<int>(1)));
+        d_votes.download(h_votes);
+    }
+}
+
+#endif /* !defined (HAVE_CUDA) */