moved image labeling to gpu module

modules/gpu/perf/perf_labeling.cpp

@@ -0,0 +1,195 @@
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  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.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// 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 "perf_precomp.hpp"
+
+using namespace std;
+using namespace testing;
+using namespace perf;
+
+DEF_PARAM_TEST_1(Image, string);
+
+struct GreedyLabeling
+{
+    struct dot
+    {
+        int x;
+        int y;
+
+        static dot make(int i, int j)
+        {
+            dot d; d.x = i; d.y = j;
+            return d;
+        }
+    };
+
+    struct InInterval
+    {
+        InInterval(const int& _lo, const int& _hi) : lo(-_lo), hi(_hi) {}
+        const int lo, hi;
+
+        bool operator() (const unsigned char a, const unsigned char b) const
+        {
+            int d = a - b;
+            return lo <= d && d <= hi;
+        }
+
+    private:
+        InInterval& operator=(const InInterval&);
+
+
+    };
+
+    GreedyLabeling(cv::Mat img)
+    : image(img), _labels(image.size(), CV_32SC1, cv::Scalar::all(-1)) {stack = new dot[image.cols * image.rows];}
+
+    ~GreedyLabeling(){delete[] stack;}
+
+    void operator() (cv::Mat labels) const
+    {
+        labels.setTo(cv::Scalar::all(-1));
+        InInterval inInt(0, 2);
+        int cc = -1;
+
+        int* dist_labels = (int*)labels.data;
+        int pitch = static_cast<int>(labels.step1());
+
+        unsigned char* source = (unsigned char*)image.data;
+        int width = image.cols;
+        int height = image.rows;
+
+        for (int j = 0; j < image.rows; ++j)
+            for (int i = 0; i < image.cols; ++i)
+            {
+                if (dist_labels[j * pitch + i] != -1) continue;
+
+                dot* top = stack;
+                dot p = dot::make(i, j);
+                cc++;
+
+                dist_labels[j * pitch + i] = cc;
+
+                while (top >= stack)
+                {
+                    int*  dl = &dist_labels[p.y * pitch + p.x];
+                    unsigned char* sp = &source[p.y * image.step1() + p.x];
+
+                    dl[0] = cc;
+
+                    //right
+                    if( p.x < (width - 1) && dl[ +1] == -1 && inInt(sp[0], sp[+1]))
+                        *top++ = dot::make(p.x + 1, p.y);
+
+                    //left
+                    if( p.x > 0 && dl[-1] == -1 && inInt(sp[0], sp[-1]))
+                        *top++ = dot::make(p.x - 1, p.y);
+
+                    //bottom
+                    if( p.y < (height - 1) && dl[+pitch] == -1 && inInt(sp[0], sp[+image.step1()]))
+                        *top++ = dot::make(p.x, p.y + 1);
+
+                    //top
+                    if( p.y > 0 && dl[-pitch] == -1 && inInt(sp[0], sp[-static_cast<int>(image.step1())]))
+                        *top++ = dot::make(p.x, p.y - 1);
+
+                    p = *--top;
+                }
+            }
+    }
+
+    cv::Mat image;
+    cv::Mat _labels;
+    dot* stack;
+};
+
+PERF_TEST_P(Image, DISABLED_Labeling_ConnectivityMask,
+            Values<string>("gpu/labeling/aloe-disp.png"))
+{
+    declare.time(1.0);
+
+    const cv::Mat image = readImage(GetParam(), cv::IMREAD_GRAYSCALE);
+    ASSERT_FALSE(image.empty());
+
+    if (PERF_RUN_GPU())
+    {
+        cv::gpu::GpuMat d_image(image);
+        cv::gpu::GpuMat mask;
+
+        TEST_CYCLE() cv::gpu::connectivityMask(d_image, mask, cv::Scalar::all(0), cv::Scalar::all(2));
+
+        GPU_SANITY_CHECK(mask);
+    }
+    else
+    {
+        FAIL_NO_CPU();
+    }
+}
+
+PERF_TEST_P(Image, DISABLED_Labeling_ConnectedComponents,
+            Values<string>("gpu/labeling/aloe-disp.png"))
+{
+    declare.time(1.0);
+
+    const cv::Mat image = readImage(GetParam(), cv::IMREAD_GRAYSCALE);
+    ASSERT_FALSE(image.empty());
+
+    if (PERF_RUN_GPU())
+    {
+        cv::gpu::GpuMat d_mask;
+        cv::gpu::connectivityMask(cv::gpu::GpuMat(image), d_mask, cv::Scalar::all(0), cv::Scalar::all(2));
+
+        cv::gpu::GpuMat components;
+
+        TEST_CYCLE() cv::gpu::labelComponents(d_mask, components);
+
+        GPU_SANITY_CHECK(components);
+    }
+    else
+    {
+        GreedyLabeling host(image);
+
+        TEST_CYCLE() host(host._labels);
+
+        cv::Mat components = host._labels;
+        CPU_SANITY_CHECK(components);
+    }
+}