alignment: SIFT Plan for linear alignment

Contains classes for image alignment on a reference images.

class silx.opencl.sift.alignment.LinearAlign(image, mask=None, extra=0, init_sigma=None, ctx=None, devicetype='all', platformid=None, deviceid=None, block_size=None, profile=False)[source]

Align images on a reference image based on an afine transformation (bi-linear + offset)

compile_kernels()[source]

Call the OpenCL compiler

align(img, shift_only=False, return_all=False, double_check=False, relative=False, orsa=False)[source]

Align image on reference image

Parameters:
  • img – numpy array containing the image to align to reference
  • return_all – return in addition ot the image, keypoints, matching keypoints, and transformations as a dict
  • relative – update reference keypoints with those from current image to perform relative alignment
Returns:

aligned image, or all informations, or None if no matching keypoints
log_profile()[source]

If we are in debugging mode, prints out all timing for every single OpenCL call