I have an star image like this
and a list of the center of the detected stars which looks like this
Name;RA(deg);Dec(deg);PixelX;PixelY;RPmag;Gmag;BPmag;Parallax;Flags
;313.311502;44.387289;2516;1458;4.850;4.728;4.681;5.8088;000800f0
;313.327406;45.181692;236;2256;4.517;5.190;5.715;3.6700;000800f0
;314.580976;44.472083;3131;4138;4.660;5.304;5.779;14.4950;00800f00
;314.471585;44.788107;2143;4206;4.358;5.673;7.615;1.9323;000800f0
; ...
I want to detect the contour/size of the star at the x,y coordinates of each entry and then write a white dot in the size of the star to a new image.
Has anyone an idea how to use the contour detection of opencv/cv2 on given coordinates?