Blur() segfaults on CentOS Linux release 7.5

C++
1

In my application i use blur as follows but it triggers a segmentation fault all time. I tried with Size(image.cols,image.rows) but not helped.

blur(image,image,Size(3,3));

terminate called after throwing an instance of ‘cv::Exception’
what(): OpenCV(4.5.0-dev) /openCV/opencv/modules/imgproc/src/filter.simd.hpp:100: error: (-215:Assertion failed) this_.roi.x >= 0 && this_.roi.y >= 0 && this_.roi.width >= 0 && this_.roi.height >= 0 && this_.roi.x + this_.roi.width <= this_.wholeSize.width && this_.roi.y + this_.roi.height <= this_.wholeSize.height in function ‘FilterEngine__start’

Aborted

please help to resolve this issue.

2

please check image.size() – your input is either invalid, or smaller than the filter

1 Like
3

and it’s not a segmentation fault. it’s a violated assertion.

1 Like
4

Input size is 1280,720 that is as expected. My sample application worked with same blur function but in live streaming it is failing.

thanks for your response.

5

how can we help you if you won’t post source code?

6

height and width keep changing for different sizes
Mat image = Mat::zeros(height, width, CV_8UC4);
image.data = framePtr;//data of height*width *4
cv::blur(image,image,cv::Size(image.cols,image.rows));

error -
terminate called after throwing an instance of ‘cv::Exception’
what(): OpenCV(4.5.0-dev) /root/Sudarshan/openCV/opencv/modules/imgproc/src/filter.simd.hpp:100: error: (-215:Assertion failed) this_.roi.x >= 0 && this_.roi.y >= 0 && this_.roi.width >= 0 && this_.roi.height >= 0 && this_.roi.x + this_.roi.width <= this_.wholeSize.width && this_.roi.y + this_.roi.height <= this_.wholeSize.height in function ‘FilterEngine__start’

Aborted

7

the Size argument refers to the filter / kernel size, not to the image size.

please try to find out, what a box filter does, and why it makes not much sense to have one in the size of the whole image