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Merge pull request #16080 from TolyaTalamanov:at/fix-mosaic-primitive

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G-API: Mosaic handle corner cases

* Handle corner cases

* Fix mosaic algo

* Fix bug with empty rects
This commit is contained in:
atalaman
2019-12-12 19:10:14 +03:00
committed by Alexander Alekhin
parent f270e8d040
commit 4a4ff6749b
3 changed files with 122 additions and 14 deletions
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modules/gapi/test/common/gapi_render_tests.cpp
+47 -6
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@@ -21,13 +21,54 @@ cv::Scalar cvtBGRToYUVC(const cv::Scalar& bgr)
void drawMosaicRef(const cv::Mat& mat, const cv::Rect &rect, int cellSz)
{
cv::Mat msc_roi = mat(rect);
int crop_x = msc_roi.cols - msc_roi.cols % cellSz;
int crop_y = msc_roi.rows - msc_roi.rows % cellSz;
cv::Rect mat_rect(0, 0, mat.cols, mat.rows);
auto intersection = mat_rect & rect;
for(int i = 0; i < crop_y; i += cellSz ) {
for(int j = 0; j < crop_x; j += cellSz) {
auto cell_roi = msc_roi(cv::Rect(j, i, cellSz, cellSz));
cv::Mat msc_roi = mat(intersection);
bool has_crop_x = false;
bool has_crop_y = false;
int cols = msc_roi.cols;
int rows = msc_roi.rows;
if (msc_roi.cols % cellSz != 0)
{
has_crop_x = true;
cols -= msc_roi.cols % cellSz;
}
if (msc_roi.rows % cellSz != 0)
{
has_crop_y = true;
rows -= msc_roi.rows % cellSz;
}
cv::Mat cell_roi;
for(int i = 0; i < rows; i += cellSz )
{
for(int j = 0; j < cols; j += cellSz)
{
cell_roi = msc_roi(cv::Rect(j, i, cellSz, cellSz));
cell_roi = cv::mean(cell_roi);
}
if (has_crop_x)
{
cell_roi = msc_roi(cv::Rect(cols, i, msc_roi.cols - cols, cellSz));
cell_roi = cv::mean(cell_roi);
}
}
if (has_crop_y)
{
for(int j = 0; j < cols; j += cellSz)
{
cell_roi = msc_roi(cv::Rect(j, rows, cellSz, msc_roi.rows - rows));
cell_roi = cv::mean(cell_roi);
}
if (has_crop_x)
{
cell_roi = msc_roi(cv::Rect(cols, rows, msc_roi.cols - cols, msc_roi.rows - rows));
cell_roi = cv::mean(cell_roi);
}
}