PixInsight - Image Post Processing

Deconvolution

updated: 2025-03-02

Deconvolution refers to the reversal of the so-called convolution operation. This is a mathematical transformation that is used in signal and image processing, among other things. Convolution can always be calculated, whereas inversion is not always possible because information can be lost during convolution that cannot be recovered. In order to be able to calculate the best possible inverse convolution, computationally intensive algorithms and procedures have been developed.


A simple example is the sharpening of an image. The process of blurring is represented by a convolution. The sharpening of the image, as supported by many image editing programs, then corresponds to a deconvolution.



Deconvolution tools in PixInsight


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