Image analysis of pack density
Input of a image of can pack from above.
Circles are placed on can domes.
Possible adjustements are: r_a which adds pixels slightly larger on each can. Alogrithm tends to under size can edge. HoughCircles: minRadius and maxRadius these radius can be optimized by looking at output array
Utilizes cv2 library Google colab requires slight adjustment to show image to cv2_imshow
Outputs jpg with circle annotations Pack density is calculated and appended on image Output file has time/date in "%Y%m%d-%H%M" form