OCT fundus image semi-automatic segmentation method and device based on curve group matching
A fundus image, semi-automatic technology, applied in the field of medical image processing, can solve the problem of indistinct difference
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Embodiment 1
[0057] This embodiment discloses a semi-automatic retinal segmentation method, such as figure 1 shown, including the following steps:
[0058] Step 1: Select a retina image with m rows and n columns of pixels, and define all pixels in each column of the image as f α =[x 1 ,x 2 ,x 3 ..., x m ] T , α∈{1,n}, x i ∈{0,255}.
[0059] Step 2: Preprocessing the selected retinal image;
[0060] Step 2.1: Set a square sliding window with a size of 5×5 pixels, and perform mean value filtering on the image. The window starts to slide from the upper left corner of the image, and moves one pixel position each time, and calculates the mean value of 25 pixel values in the window, and uses the mean value Replace the pixel value of the center point of the window, and this step is repeated until the window passes through all points on the image.
[0061] Step 2.2: Perform contrast enhancement on the filtered image, and calculate the median p of the gray value of each column of pixels ...
Embodiment 2
[0094] The purpose of this embodiment is to provide a computing device.
[0095] A semi-automatic segmentation device for OCT fundus images based on curve group matching, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor implements the following steps when executing the program, including:
[0096] Receive a fundus image with m rows and n columns and perform preprocessing;
[0097] Determine the gray value vector curve f of each column of the fundus image α =[x 1 ,x 2 ,x 3 ...,x m ] T , α∈{1,n}, x i ∈ {0,255}, calculate the gray value vector curve f α Descriptor of each pixel point in, obtain the descriptor matrix of the fundus image;
[0098] Based on the descriptor matrix, all gray value vector curves are pairwise matched through a dynamic time programming algorithm to obtain a spatial correspondence matrix between paired curve pixel points;
[0099] The pixel points manually specified by t...
Embodiment 3
[0101] The purpose of this embodiment is to provide a computer-readable storage medium.
[0102] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the following steps are performed:
[0103] Receive a fundus image with m rows and n columns and perform preprocessing;
[0104] Determine the gray value vector curve f of each column of the fundus image α =[x 1 ,x 2 ,x 3 ...,x m ] T , α∈{1,n}, x i ∈ {0,255}, calculate the gray value vector curve f α Descriptor of each pixel point in, obtain the descriptor matrix of the fundus image;
[0105] Based on the descriptor matrix, all gray value vector curves are pairwise matched through a dynamic time programming algorithm to obtain a spatial correspondence matrix between paired curve pixel points;
[0106] The pixel points manually specified by the user are received, and all pixel points corresponding to the points are found according to the coordinates of...
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