Defogging strengthening method for transmissivity/dark channel prior based on spectral characteristic

Defogging strengthening method for transmissivity/dark channel prior based on spectral characteristic

  • CN 102,831,590 A
  • Filed: 08/30/2012
  • Published: 12/19/2012
  • Est. Priority Date: 08/30/2012
  • Status: Active Application
First Claim
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1. based on the transmissivity-dark primary priori mist elimination Enhancement Method of spectral characteristic, the steps include:

  • (1) adopts CMF emulation human eye sensitivity characteristic;

    Under the spectral distribution characteristic of light source D65, find the solution the human eye vision perceptible stimulus weight matrix of RGB image through white balance point (2) interval according to human eye perceived light spectrum wavelength;

    Independently spectrum channel α

    , β

    , γ and

    then combine the three-channel human eye vision perceptible stimulus of transmissivity weight matrix under 3 independent light spectrum wavelength scopes of CMF and the calculating of D65 light source with B, G, R three looks of corresponding human eye perception to divide 3 (3) consider corresponding same image, it is F (x, human eye values of y) finding the solution and transmissivity triple channel T from the rgb pixel space c(x, y) values found the solution of space equates, (x y), utilizes the human eye vision perceptible stimulus weight matrix of RGB image for input mist image F to be arranged With the three-channel human eye vision perceptible stimulus of transmissivity weight matrix Find the solution corresponding transmissivity triple channel image T c(x, y), wherein c ∈

    { α

    , beta, gamma } is respectively corresponding transmissivity triple channel space, and x, y are the coordinate figure of each pixel of image, and α

    , beta, gamma are respectively corresponding transmissivity triple channel space;

    (4) utilize coloured image transmissivity-dark primary a priori assumption of expanding, find the solution the value A of atmosphere light in the transmissivity space c, and then at transmissivity triple channel image T c(x finds the solution mist elimination palinspastic map J in y) c(x, y) with propagate figure t (x, y);

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