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/gapi/test/gapi_scalar_tests.cpp

@@ -0,0 +1,117 @@
+// 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.
+//
+// Copyright (C) 2018 Intel Corporation
+
+
+#include "test_precomp.hpp"
+
+#include <iostream>
+
+namespace opencv_test
+{
+
+TEST(GAPI_Scalar, Argument)
+{
+    cv::Size sz(2, 2);
+    cv::Mat in_mat(sz, CV_8U);
+    cv::randn(in_mat, cv::Scalar::all(127), cv::Scalar::all(40.f));
+
+    cv::GComputationT<cv::GMat (cv::GMat, cv::GScalar)> mulS([](cv::GMat in, cv::GScalar c)
+    {
+        return in*c;
+    });
+
+    cv::Mat out_mat(sz, CV_8U);
+    mulS.apply(in_mat, cv::Scalar(2), out_mat);
+
+    cv::Mat reference = in_mat*2;
+    EXPECT_EQ(0, cvtest::norm(out_mat, reference, NORM_INF));
+}
+
+TEST(GAPI_Scalar, ReturnValue)
+{
+    const cv::Size sz(2, 2);
+    cv::Mat in_mat(sz, CV_8U, cv::Scalar(1));
+
+    cv::GComputationT<cv::GScalar (cv::GMat)> sum_of_sum([](cv::GMat in)
+    {
+        return cv::gapi::sum(in + in);
+    });
+
+    cv::Scalar out;
+    sum_of_sum.apply(in_mat, out);
+
+    EXPECT_EQ(8, out[0]);
+}
+
+TEST(GAPI_Scalar, TmpScalar)
+{
+    const cv::Size sz(2, 2);
+    cv::Mat in_mat(sz, CV_8U, cv::Scalar(1));
+
+    cv::GComputationT<cv::GMat (cv::GMat)> mul_by_sum([](cv::GMat in)
+    {
+        return in * cv::gapi::sum(in);
+    });
+
+    cv::Mat out_mat(sz, CV_8U);
+    mul_by_sum.apply(in_mat, out_mat);
+
+    cv::Mat reference = cv::Mat(sz, CV_8U, cv::Scalar(4));
+    EXPECT_EQ(0, cvtest::norm(out_mat, reference, NORM_INF));
+}
+
+TEST(GAPI_ScalarWithValue, Simple_Arithmetic_Pipeline)
+{
+    GMat in;
+    GMat out = (in + 1) * 2;
+    cv::GComputation comp(in, out);
+
+    cv::Mat in_mat  = cv::Mat::eye(3, 3, CV_8UC1);
+    cv::Mat ref_mat, out_mat;
+
+    ref_mat = (in_mat + 1) * 2;
+    comp.apply(in_mat, out_mat);
+
+    EXPECT_EQ(0, cvtest::norm(out_mat, ref_mat, NORM_INF));
+}
+
+TEST(GAPI_ScalarWithValue, GScalar_Initilization)
+{
+    cv::Scalar sc(2);
+    cv::GMat in;
+    cv::GScalar s(sc);
+    cv::GComputation comp(in, cv::gapi::mulC(in, s));
+
+    cv::Mat in_mat = cv::Mat::eye(3, 3, CV_8UC1);
+    cv::Mat ref_mat, out_mat;
+    cv::multiply(in_mat, sc, ref_mat, 1, CV_8UC1);
+    comp.apply(cv::gin(in_mat), cv::gout(out_mat));
+
+    EXPECT_EQ(0, cvtest::norm(out_mat, ref_mat, NORM_INF));
+}
+
+TEST(GAPI_ScalarWithValue, Constant_GScalar_In_Middle_Graph)
+{
+    cv::Scalar  sc(5);
+    cv::GMat    in1;
+    cv::GScalar in2;
+    cv::GScalar s(sc);
+
+    auto add_out = cv::gapi::addC(in1, in2);
+    cv::GComputation comp(cv::GIn(in1, in2), cv::GOut(cv::gapi::mulC(add_out, s)));
+
+    cv::Mat    in_mat = cv::Mat::eye(3, 3, CV_8UC1);
+    cv::Scalar in_scalar(3);
+
+    cv::Mat ref_mat, out_mat, add_mat;
+    cv::add(in_mat, in_scalar, add_mat);
+    cv::multiply(add_mat, sc, ref_mat, 1, CV_8UC1);
+    comp.apply(cv::gin(in_mat, in_scalar), cv::gout(out_mat));
+
+    EXPECT_EQ(0, cvtest::norm(out_mat, ref_mat, NORM_INF));
+}
+
+} // namespace opencv_test