[英]Blurring non-rectangular region of an image, then downsample whole image - OpenCV
I am using OpenCV3 to blur and downsample an image, I just want to blur the region inside the area defined by a binary mask like: 我正在使用OpenCV3对图像进行模糊处理和降采样处理,我只想对二进制掩码定义的区域内的区域进行模糊处理,例如:
After that region is blurred, I would like to downsample the image without blurring the whole image again, so pyrDown
is not useful for me. 在该区域模糊之后,我想对图像进行下采样而不再次模糊整个图像,因此
pyrDown
对我没有用。
Any idea? 任何想法?
Tricky way: 棘手的方式:
cv::Mat roi;
cv::blur(image & mask,roi,cv::Size(3,3));//Or whatever blurring you want
cv::Mat Result=(image & (~mask)) + roi;
cv::resize(result,result,cv::Size(New_Width,New_height)); // Or whatever downsampling you want
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