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docs(core): fix process_video_frame() code snippet

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This commit is contained in:
Alexander Alekhin 2020-12-20 02:27:46 +00:00
parent ef27c11d50
commit 3359bdc464
1 changed files with 9 additions and 4 deletions
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11
modules/core/include/opencv2/core/mat.hpp
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@ -702,11 +702,16 @@ sub-matrices.
-# Process "foreign" data using OpenCV (for example, when you implement a DirectShow\* filter or
a processing module for gstreamer, and so on). For example:
@code
void process_video_frame(const unsigned char* pixels,
Mat process_video_frame(const unsigned char* pixels,
int width, int height, int step)
{
Mat img(height, width, CV_8UC3, pixels, step);
GaussianBlur(img, img, Size(7,7), 1.5, 1.5);
// wrap input buffer
Mat img(height, width, CV_8UC3, (unsigned char*)pixels, step);
Mat result;
GaussianBlur(img, result, Size(7, 7), 1.5, 1.5);
return result;
}
@endcode
-# Quickly initialize small matrices and/or get a super-fast element access.