System Information

Platform: all
Related work: #24623

Detailed description

Arithmetic like addition and subtraction on CV_16F matrices lead to SEGFAULT due to a call of NULL function, added CV_Assert to change it into an exception.

Steps to reproduce

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)