intgaussder
integrated Gaussian derivative kernel
Integrated Gaussian derivative kernels are obtained by integrating the continuous Gaussian derivative kernels over each pixel support region. In this way, some of the severe artefacts of sampling the Gaussian derivative kernels at too fine scales can be reduced.
Discrete approximations of Gaussian smoothing and Gaussian derivatives
https://paperswithcode.com/paper/discrete-approximations-of-gaussian-smoothing
Discrete approximations of Gaussian smoothing and Gaussian derivatives