A Sonar Image Segmentation Method Based on Offset Field Level Set
An image segmentation and level set technology, applied in image analysis, image enhancement, image data processing and other directions, can solve problems such as inapplicability and complex algorithms, achieve good segmentation results, do not increase the amount of calculation, and resist noise interference.
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[0050] The invention is further described below with reference to the accompanying drawings:
[0051] Such as figure 1 A sonar image segmentation method based on an offset field level, containing the following steps:
[0052] Step (1): figure 2 , The source image is subjected to a non-sampling contour wave transform, respectively, and the primary and secondary image multi-scale decomposition, resulting in a low frequency sub-image, including a first low frequency image, a second low frequency image;
[0053] Step (2): According to the low frequency sub-image, combined with the Markov quad neighborhood model, the Markov quad neighborhood model parameters are estimated:
[0054] Image domain In all 点 pixel values i (x) is random variable, i (x) = i x Probability P (i (x) = i x ) Is expressed as conditional probability p (i x | Ω). Pixel x neighborhood is expressed x , When the probability P (i x | Ω) = p (i x When | η)> 0, the current pixel values are designed to be related to th...
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