… The results of the Fourier transform based image enhancement are shown in Fig. 8, for the
boundary parameters. The large values of lead to the elimination of the higher frequencies on …

… of image enhancement: a) logarithmic transform histogram … transform histogram shifting,
and c) logarithmic transform … (DCT), Fourier transform, and other fast unitary transforms. A …

… algorithms commonly used for image enhancement. The paper focuses … Fourier Transform
of the image is computed first. All the enhancement operations are performed on the Fourier …

… This paper extends this family of algorithms to contrast enhancement and noise filtering. …
the fast Fourier transform, convolution, or recursive algorithms. In the transform and convolution …

… , and the continuous Fourier transform replaced by the discrete Fourier transform (DFT). …
Image enhancement has been defined [24] as the processing of an image so that the enhanced …

… Fourier transforms. The key component is to obtain approximate digital samples from the
Fourier transform … ), but we consider that if an image enhancement method improves the human …

… The general multi-image registration problem is discussed … fast Fourier transform (FFT) for
high-speed correlation of image … An example of thresholded spatial gradient enhancement is …

… The methods so far developed for image enhancement may be categorized into two broad
… The technique in the first category depends on modifying the Fourier transform of an image, …

… a new approach for fingerprint enhancement based on short time Fourier transform (STFT) …
fingerprint image enhancement algorithm based on contextual filtering in the Fourier domain. …

… If we take the Fourier transform of (1.1) we arrive at … the first time to feature-oriented image
enhancement. There the first … we develop shock filters for image enhancement. (Our next paper …