Retrieval method of color images based on quaternion Harmonic-Fourier moments
A color image and Fourier moment technology, applied in the field of image processing, can solve the problems of affecting the image retrieval effect, low efficiency of color feature or trait feature retrieval, time-consuming and manpower-consuming, etc., so as to avoid manual labeling process and improve retrieval Efficiency, the effect of simple design
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[0034] Such as figure 1 Shown, method of the present invention carries out according to the following steps:
[0035] Step 1: Extend the circular harmonic-Fourier moment theory of the traditional grayscale image to the quaternion level, and further determine the quaternion circular harmonic-Fourier moment of the color image:
[0036] Step 11: Assumptions is a color image in the polar coordinate system, according to the definition of the circular harmonic-Fourier moment of the traditional grayscale image and the quaternion theory, the color image quaternion circular harmonic-Fourier moment of the following form can be defined:
[0037]
[0038] in, is a unit pure quaternion, , represents the radial basis function, and has ;
[0039] Step 12: In the polar coordinate system, use a finite number of quaternion circular harmonics-Fourier moments to approximately reconstruct the color image function ,assumed is the highest order of the reconstructed image, To reco...
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