tomodrgn.fft.iht2_center

iht2_center(possibly_batched_imgs: ndarray) → ndarray

Batch-vectorized 2-D inverse DHT of an even-box sized image(s) as numpy array By definition, is equivalent to forward DHT up to normalization scale factor (of N samples, typically D*D here) Note: numpy promotes default input dtype np.float32 to output dtype np.float64

Parameters:

possibly_batched_imgs – np.ndarray of images, shape ([N], D, D)

Returns:

np.ndarray of images DFT, shape ([N], D, D)