Pituitary tumor texture image grading method based on fine-grained medical image segmentation and true value discovery data amplification
A medical image and grading method technology, applied in the field of medical image processing, can solve the problems of too few medical image data sets, achieve the effect of solving difficult feature extraction, solving gray scale and assisting clinical diagnosis
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[0062] The present invention will be further described below in conjunction with the accompanying drawings.
[0063] The principle of the density peak algorithm based on the present invention is as follows:
[0064] In the DPC algorithm, the selection of cluster centers (Cluster Centers) is its core idea. The characteristics of the selected cluster centers are that the local density and distance are as large as possible, and have a relatively large distance from any point with a higher density. distance. Consider the data set to be clustered S={χ i}N i=1, (N∈N+), according to the above two features, the algorithm for each data point χ in the data set S i Define the local density ρ for it i and the relative distance δ i . The distance d between these two variables and the data point ij relevant.
[0065] Data point χ i The local density of is defined as:
[0066]
[0067] which function
[0068]
[0069] The parameter dc>0 in the formula is the cut-off distance,...
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