![]() ![]() This may be another solution that does not involve the use of opencv: def polar2cart(r, theta, center):ĭef img2polar(img, center, final_radius, initial_radius = None, phase_width = 3000): Latest versions of opencv supports a function cv2.linearPolar. it doesn't seem to be documented, but appears to be similar to LogPolar. ![]() ![]() To learn more about polarTransform, see the documentation.The CV source code mentions a LinearPolar. The result is a polar domain image with a specified initial and final radius and angle:Ĭonverting back to the cartesian image results in only a slice of the original image to be shown because the initial and final radius and angle were specified: Next Steps Run the following command in the base directory to run the tests: Example To install in 'develop' or 'editable' mode, where changes can be made to the local working code and Python will usethe updated polarTransform code. Use the following commands to geta copy from GitHub and install all dependencies: To install the latest code from the repository (usually stable, but may haveundocumented changes or bugs):įor developers, you can clone the polarTransform repository and run the setup.py file. The simplest way toinstall alone is using pip at a command line: ![]() PolarTransform is currently available on PyPi. It contains manyfeatures such as specifying the start/stop radius and angle, interpolation order (bicubic, linear, nearest, etc), andmuch more. PolarTransform is a Python package for converting images between the polar and Cartesian domain. I would really appreciate some help to add code in function to determine angle conversion without VLOOKUP. I can get correct plot with VLOOKUP to determine correct cartesian angle. Lets say that I have plot in 50,50 and I would like to find another cartesian plot from that point with angle and distance in polar coordinates for example (angle 180: distance: 10)įunction now uses cartesian orientated angles. The issue is to find cartesian coordinate in 0,0 origin based chart. I have a problem with converting polar coordinates with cartesian points and back. ![]()
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