Aims at the problem of partial loss of embryonic edge detection by the EDCircles algorithm

and integrate EDContours algorithm to obtain accurate embryonic edge. Then

combine EDLines algorithm to obtain line segments graph

the line segments are converted into arcs according to the angle between the straight line vector and the direction constraints. Besides

circles and ellipses detection map is outputted by the least squares fitting of circles and the enhanced direct least square fitting of ellipses algorithm. Finally

the constraint values of radius of circles and minor axis of ellipses are set to remove pseudo-circles and pseudo-ellipses

and the final detection results are given. Experimental results show that this method has good accuracy and versatility

and can realize rapid detection and precise localization of embryonic blastomeres.