Patent ID: 11893747
Assignee: CORETRONIC CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. The electronic device according to claim 12, wherein the operation of determining the object backbone area of the residual image comprises:
removing the part having the pixel values belonging to the outliers in the residual image;
calculating a standard deviation according to a plurality of pixel values of a plurality of pixels of a remaining part of the residual image and the background image;
determining a second threshold according to the standard deviation;
determining an object core area in the residual image according to the second threshold; and
recursively determining whether a residual polarity of each of a plurality of adjacent pixels adjacent to a plurality of edge pixels of the object core area in the residual image is the same as a residual polarity of the corresponding edge pixel, and whether a pixel value of each of the plurality of adjacent pixels is greater than a third threshold, so as to expand the object core area to form the object backbone area.