Applying phase transfer function

摘要

Systems and methods can be configured to perform operations related to digital image processing. In a general aspect, this disclosure describes systems and methods relating to processing digital images for imaging system characterization and image quality enhancement. In some implementations, a method for digital image processing includes measuring a first phase transfer function (PTF) of a first digital image and a second PTF of a second digital image. The second digital image captures a spatially shifted version of the first digital image. The first PTF and the second PTF are compared and a spatial shift of the second image to the first image is determined.

主权项

1. A method for digital image processing, comprising:
measuring a first phase transfer function (PTF) of an imaging system based on a first digital image, wherein the imaging system includes an optical component and a detector system; measuring a second PTF of the imaging system based on a second digital image, wherein the second digital image captures a laterally shifted version of the first digital image; comparing the first PTF with the second PTF; and determining a lateral shift of the second image to the first image.