: Astronomie: deconvolution

mathematical technique > mathematical analysis > functional analysis > deconvolution

deconvolution

In mathematics, deconvolution is the operation inverse to convolution. Both operations are used in signal processing and image processing. For example, it may be possible to recover the original signal after a filter (convolution) by using a deconvolution method with a certain degree of accuracy. Due to the measurement error of the recorded signal or image, it can be demonstrated that the worse the SNR, the worse the reversing of a filter will be; hence, inverting a filter is not always a good solution as the error amplifies. Deconvolution offers a solution to this problem. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Deconvolution)

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