Christoph Rackwitz questions

Christoph Rackwitz answers

• Camera calibration, focal length value seems too large
• AttributeError: 'tuple' object has no attribute 'sort'
• OpenCV: draw line with gradient color
• Difference of Gaussian - variable results
• Generic detection of subimages in images with openCV
• How to "stretch" out a bounding box given from minAreaRect function in openCV?
• opencv cv2.drawcontours contour argument: contour vs [contour] [duplicate]
• Detecting angle difference between two circular objects
• CV2 Image Error: error: (-215:Assertion failed) !ssize.empty() in function 'cv::resize'
• Python, OpenCV: Increasing image brightness without overflowing UINT8 array