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/videoio/perf/perf_camera.impl.hpp

@@ -0,0 +1,76 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html
+
+// Not a standalone header.
+
+#include <opencv2/core/utils/configuration.private.hpp>
+
+namespace opencv_test {
+using namespace perf;
+
+static
+utils::Paths getTestCameras()
+{
+    static utils::Paths cameras = utils::getConfigurationParameterPaths("OPENCV_TEST_PERF_CAMERA_LIST");
+    return cameras;
+}
+
+PERF_TEST(VideoCapture_Camera, waitAny_V4L)
+{
+    auto cameraNames = getTestCameras();
+    if (cameraNames.empty())
+       throw SkipTestException("No list of tested cameras. Use OPENCV_TEST_PERF_CAMERA_LIST parameter");
+
+    const int totalFrames = 50; // number of expected frames (summary for all cameras)
+    const int64 timeoutNS = 100 * 1000000;
+
+    const Size frameSize(640, 480);
+    const int fpsDefaultEven = 30;
+    const int fpsDefaultOdd = 15;
+
+    std::vector<VideoCapture> cameras;
+    for (size_t i = 0; i < cameraNames.size(); ++i)
+    {
+        const auto& name = cameraNames[i];
+        int fps = (int)utils::getConfigurationParameterSizeT(cv::format("OPENCV_TEST_CAMERA%d_FPS", (int)i).c_str(), (i & 1) ? fpsDefaultOdd : fpsDefaultEven);
+        std::cout << "Camera[" << i << "] = '" << name << "', fps=" << fps << std::endl;
+        VideoCapture cap(name, CAP_V4L);
+        ASSERT_TRUE(cap.isOpened()) << name;
+        EXPECT_TRUE(cap.set(CAP_PROP_FRAME_WIDTH, frameSize.width)) << name;
+        EXPECT_TRUE(cap.set(CAP_PROP_FRAME_HEIGHT, frameSize.height)) << name;
+        EXPECT_TRUE(cap.set(CAP_PROP_FPS, fps)) << name;
+        //launch cameras
+        Mat firstFrame;
+        EXPECT_TRUE(cap.read(firstFrame));
+        EXPECT_EQ(frameSize.width, firstFrame.cols);
+        EXPECT_EQ(frameSize.height, firstFrame.rows);
+        cameras.push_back(cap);
+    }
+
+    TEST_CYCLE()
+    {
+        int counter = 0;
+        std::vector<int> cameraReady;
+        do
+        {
+            EXPECT_TRUE(VideoCapture::waitAny(cameras, cameraReady, timeoutNS));
+            EXPECT_FALSE(cameraReady.empty());
+            for (int idx : cameraReady)
+            {
+                VideoCapture& c = cameras[idx];
+                Mat frame;
+                ASSERT_TRUE(c.retrieve(frame));
+                EXPECT_EQ(frameSize.width, frame.cols);
+                EXPECT_EQ(frameSize.height, frame.rows);
+
+                ++counter;
+            }
+        }
+        while(counter < totalFrames);
+    }
+
+    SANITY_CHECK_NOTHING();
+}
+
+} // namespace

3rdparty/opencv-4.5.4/modules/videoio/perf/perf_input.cpp

@@ -0,0 +1,37 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html
+#include "perf_precomp.hpp"
+
+#include "perf_camera.impl.hpp"
+
+namespace opencv_test
+{
+using namespace perf;
+
+typedef perf::TestBaseWithParam<std::string> VideoCapture_Reading;
+
+const string bunny_files[] = {
+    "highgui/video/big_buck_bunny.avi",
+    "highgui/video/big_buck_bunny.mov",
+    "highgui/video/big_buck_bunny.mp4",
+#ifndef HAVE_MSMF
+    // MPEG2 is not supported by Media Foundation yet
+    // http://social.msdn.microsoft.com/Forums/en-US/mediafoundationdevelopment/thread/39a36231-8c01-40af-9af5-3c105d684429
+    "highgui/video/big_buck_bunny.mpg",
+#endif
+    "highgui/video/big_buck_bunny.wmv"
+};
+
+PERF_TEST_P(VideoCapture_Reading, ReadFile, testing::ValuesIn(bunny_files) )
+{
+  string filename = getDataPath(GetParam());
+
+  VideoCapture cap;
+
+  TEST_CYCLE() cap.open(filename);
+
+  SANITY_CHECK_NOTHING();
+}
+
+} // namespace

3rdparty/opencv-4.5.4/modules/videoio/perf/perf_main.cpp

@@ -0,0 +1,10 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html
+#include "perf_precomp.hpp"
+
+#if defined(HAVE_HPX)
+    #include <hpx/hpx_main.hpp>
+#endif
+
+CV_PERF_TEST_MAIN(videoio)

3rdparty/opencv-4.5.4/modules/videoio/perf/perf_output.cpp

@@ -0,0 +1,47 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html
+#include "perf_precomp.hpp"
+
+namespace opencv_test
+{
+using namespace perf;
+
+typedef tuple<std::string, bool> VideoWriter_Writing_t;
+typedef perf::TestBaseWithParam<VideoWriter_Writing_t> VideoWriter_Writing;
+
+const string image_files[] = {
+    "python/images/QCIF_00.bmp",
+    "python/images/QCIF_01.bmp",
+    "python/images/QCIF_02.bmp",
+    "python/images/QCIF_03.bmp",
+    "python/images/QCIF_04.bmp",
+    "python/images/QCIF_05.bmp"
+};
+
+PERF_TEST_P(VideoWriter_Writing, WriteFrame,
+            testing::Combine(
+                testing::ValuesIn(image_files),
+                testing::Bool()))
+{
+  const string filename = getDataPath(get<0>(GetParam()));
+  const bool isColor = get<1>(GetParam());
+  Mat image = imread(filename, isColor ? IMREAD_COLOR : IMREAD_GRAYSCALE );
+#if defined(HAVE_MSMF) && !defined(HAVE_FFMPEG)
+  const string outfile = cv::tempfile(".wmv");
+  const int fourcc = VideoWriter::fourcc('W', 'M', 'V', '3');
+#else
+  const string outfile = cv::tempfile(".avi");
+  const int fourcc = VideoWriter::fourcc('X', 'V', 'I', 'D');
+#endif
+
+  VideoWriter writer(outfile, fourcc, 25, cv::Size(image.cols, image.rows), isColor);
+  if (!writer.isOpened())
+      throw SkipTestException("Video file can not be opened");
+
+  TEST_CYCLE_N(100) { writer << image; }
+  SANITY_CHECK_NOTHING();
+  remove(outfile.c_str());
+}
+
+} // namespace

3rdparty/opencv-4.5.4/modules/videoio/perf/perf_precomp.hpp

@@ -0,0 +1,10 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html
+#ifndef __OPENCV_PERF_PRECOMP_HPP__
+#define __OPENCV_PERF_PRECOMP_HPP__
+
+#include "opencv2/ts.hpp"
+#include "opencv2/videoio.hpp"
+
+#endif