OCT image edema region boundary extraction method and system based on biological inspiration
A boundary extraction, bio-inspired technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problems of high computational time, mis-extraction, mis-extraction and over-extraction of boundary extraction, and achieves the improvement of the average correlation coefficient, The effect of improved average accuracy and improved average specificity
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[0104] The method for extracting the boundary of an edema region in an OCT image based on biological inspiration provided by an embodiment of the present invention includes:
[0105] Step 1: Biologically inspired OCT image preprocessing.
[0106] The SGRIF method consists of a global structure shifting filter and a global edge preserving smoothing filter. The objective cost function of the global structure transfer filter is:
[0107] λ(O-I) T (O-I)+(D x O-V h ) T (D x O-V h)+(D y O-V v ) T (D y O-V v ) (1).
[0108] Among them, D x and D y Represents a discrete differential operator, i represents a pixel index, Represents the operator for calculating the gradient, O and V represent the output image and the guidance vector field, respectively, and λ is a parameter to control the trade-off between O and V;
[0109] The output image O is obtained by solving the following linear equation:
[0110]
[0111] where A is the identity matrix.
[0112] The output ...
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