Quote:
Originally Posted by jacob9706
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Thanks pointing me toward OpenCV. I'll probably be doing onboard processing this year with a Raspberry Pi.
I have a few questions regarding your tutorial.
1. Why did you use Gaussian Blur on the image?
2. Could you explain what the findContours, arcLength( how do the arguments RETR_TREE and CHAIN_APPROX_SIMPLE modify the function?) , contourArea do exactly(except what's obvious), and how they relate to finding a correct rectangle?
3. Why do you mulitply the contour_length by 0.02?
4. How did you find the number 1000 to check against the contourArea?
I'm sure I could answer question #2 with some searching, but if you chould answer the others, that would be awesome.