Computer Vision - Star Counter

A computer vision program for determining the number of celestial bodies in a photograph.

How does the program work ?

• Load image for analysis, then convert to grayscale
• Pixel dilation to distinguish glued dots (with Numpy)
• Dot detection with OpenCV's Canny algorithm
• Store all dot coordinates in the variable <contours>
• Number of dots = cardinal of the set contained in the variable <contours>

Constraints

• The program does not yet recognize when two dots overlap
• Dense, bright areas can distort results

How to use the program ?

• Download the files (main.py and image.jpg) in the same repository
• Launch the program with Python (python/py main.py)

Upcoming improvements

• Machine Learning

Credits

• Photography by Samuel Richard