Translation invariance shearler transformation medical image denoising method
A translation invariance, medical image technology, applied in the field of medical ultrasound image denoising, can solve the problem of excellent performance and difficult to promote data space and so on
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[0098] Such as figure 1 As shown, a translation-invariant shearer transform medical image denoising method of the present embodiment, such as figure 1 shown, including the following steps:
[0099] 1) Utilize the noise imaging system to collect the envelope signal of the noise image, and establish a medical ultrasound image model through logarithmic transformation; obtain the two-dimensional discrete shearlet coefficient after the two-dimensional discrete shearlet transformation, and the two-dimensional discrete shearlet coefficient includes noise-free Image two-dimensional discrete shearlet coefficient and speckle noise image two-dimensional discrete shearlet coefficient;
[0100] 2) the medical ultrasound image model after the logarithmic transformation obtained in the step 1) utilizes a pyramid filter bank to carry out multi-scale and multi-directional decomposition, and obtains k+1 subband images equal in size to the medical ultrasound image model, so Described sub-band ...
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