feat: 切换后端至PaddleOCR-NCNN，切换工程为CMake

1.项目后端整体迁移至PaddleOCR-NCNN算法，已通过基本的兼容性测试
2.工程改为使用CMake组织，后续为了更好地兼容第三方库，不再提供QMake工程
3.重整权利声明文件，重整代码工程，确保最小化侵权风险

Log: 切换后端至PaddleOCR-NCNN，切换工程为CMake
Change-Id: I4d5d2c5d37505a4a24b389b1a4c5d12f17bfa38c

3rdparty/opencv-4.5.4/modules/imgproc/perf/opencl/perf_gftt.cpp

@@ -0,0 +1,116 @@
+///////////////////////////////////////////////////////////////////////////////////////
+//
+//  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) 2010-2012, Multicoreware, Inc., all rights reserved.
+// Copyright (C) 2010-2012, Institute Of Software Chinese Academy Of Science, all rights reserved.
+// Copyright (C) 2010-2012, Advanced Micro Devices, 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"
+#include "opencv2/ts/ocl_perf.hpp"
+
+#include <sstream>
+
+#ifdef HAVE_OPENCL
+
+namespace opencv_test {
+namespace ocl {
+
+//////////////////////////// GoodFeaturesToTrack //////////////////////////
+
+typedef tuple<String, double, bool> GoodFeaturesToTrackParams;
+typedef TestBaseWithParam<GoodFeaturesToTrackParams> GoodFeaturesToTrackFixture;
+
+OCL_PERF_TEST_P(GoodFeaturesToTrackFixture, GoodFeaturesToTrack,
+                ::testing::Combine(OCL_PERF_ENUM(String("gpu/opticalflow/rubberwhale1.png")),
+                                   OCL_PERF_ENUM(0.0, 3.0), Bool()))
+{
+    GoodFeaturesToTrackParams params = GetParam();
+    const String fileName = get<0>(params);
+    const double minDistance = get<1>(params), qualityLevel = 0.01;
+    const bool harrisDetector = get<2>(params);
+    const int maxCorners = 1000;
+
+    Mat img = imread(getDataPath(fileName), cv::IMREAD_GRAYSCALE);
+    ASSERT_FALSE(img.empty()) << "could not load " << fileName;
+
+    checkDeviceMaxMemoryAllocSize(img.size(), img.type());
+
+    UMat src(img.size(), img.type()), dst(1, maxCorners, CV_32FC2);
+    img.copyTo(src);
+
+    declare.in(src, WARMUP_READ).out(dst);
+
+    OCL_TEST_CYCLE() cv::goodFeaturesToTrack(src, dst, maxCorners, qualityLevel,
+                                             minDistance, noArray(), 3, 3, harrisDetector, 0.04);
+
+    SANITY_CHECK(dst);
+}
+
+OCL_PERF_TEST_P(GoodFeaturesToTrackFixture, GoodFeaturesToTrackWithQuality,
+                ::testing::Combine(OCL_PERF_ENUM(String("gpu/opticalflow/rubberwhale1.png")),
+                                   OCL_PERF_ENUM(3.0), Bool()))
+{
+    GoodFeaturesToTrackParams params = GetParam();
+    const String fileName = get<0>(params);
+    const double minDistance = get<1>(params), qualityLevel = 0.01;
+    const bool harrisDetector = get<2>(params);
+    const int maxCorners = 1000;
+
+    Mat img = imread(getDataPath(fileName), cv::IMREAD_GRAYSCALE);
+    ASSERT_FALSE(img.empty()) << "could not load " << fileName;
+
+    checkDeviceMaxMemoryAllocSize(img.size(), img.type());
+
+    UMat src(img.size(), img.type()), dst(1, maxCorners, CV_32FC2);
+    img.copyTo(src);
+
+    std::vector<float> cornersQuality;
+
+    declare.in(src, WARMUP_READ).out(dst);
+
+    OCL_TEST_CYCLE() cv::goodFeaturesToTrack(src, dst, maxCorners, qualityLevel, minDistance,
+                                             noArray(), cornersQuality, 3, 3, harrisDetector, 0.04);
+
+    SANITY_CHECK(dst);
+    SANITY_CHECK(cornersQuality, 1e-6);
+}
+
+} } // namespace opencv_test::ocl
+
+#endif