Grayscale image enhancement method based on stochastic resonance mechanism of delayed self-feedback FHN (fitzhugh-nagumo) model
A gray-scale image and stochastic resonance technology, which is applied in the field of image processing, can solve the problems of unsatisfactory image enhancement effect and loss of useful image information, and achieve the effect of improving the enhancement performance and improving the equality relationship
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[0019] The present invention will be further described below in conjunction with accompanying drawing.
[0020] The present invention is based on the FitzHugh-Nagumo (FHN) neuron model describing the electrophysiological characteristics of neurons, adding a delay self-feedback link to simulate the delay and feedback adjustment characteristics in the signal transmission process of the nervous system, which will help to improve the stochastic resonance parameters Optimize range and stability of performance.
[0021] Step (1) for the pixel value The noise-containing and weak image is scanned, and the two-dimensional image signal is reduced into a one-dimensional signal sequence. , ( ).
[0022] In step (2), the one-dimensional signal sequence obtained by dimensionality reduction , ( ) is normalized to obtain , ( ),in, , ( ),in represent image The minimum value of pixel values, represent image The maximum value of each pixel value, so that it meets the ch...
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