System Information

Platform: any

Detailed description

Current tests check C++ vs OpenCL code only. Derivatives like Shaar and Sobel may use sepFilter2D as option, but HAL usually provides dedicated API for Shaar, Sobel with higher priority then sepFilter2D. It make sepFilter2D badly covered by accuracy tests

Steps to reproduce

no

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
• I updated to the latest OpenCV version and the issue is still there
• There is reproducer code and related data files (videos, images, onnx, etc)