openpiv_cxx.filters.highpass_filter

openpiv_cxx.filters.highpass_filter(img, sigma=1.0, truncate=2.0, clip_at_zero=True, keep_dtype=False)

A simple sliding window gaussian high pass filter.

Parameters:

• img (ndarray) – A two dimensional array containing pixel intenensities.

• sigma (float) – Standard deviation of gaussian kernel.

• truncate (float) – Truncate the kernel at specified standard deviations.

• keep_dtype (bool) – Cast output to original dtype.

Returns:

new_img – A two dimensional array containing pixel intenensities.

Return type:

ndarray