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2016-08-26 05:18:21 -0600 | commented answer | Antialiasing in warpPerspective @Tetragramm - thanks for your inputs, I've updated the question. Basically, image quality is very important in the operations I am doing and I'm unable to match the output produced by Imagemagick using the inherent functions. I suspect is has something to do on how the resampling is being done in opencv. |
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2016-08-24 02:39:28 -0600 | commented answer | Antialiasing in warpPerspective I've done that, but the results are still not satisfactory. I want something that mimics how photoshop does these operations - it rasterizes the image then does a resize/reshape of the object without losing the properties. Any chance we can do something like that in OpenCV? |
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2016-08-19 09:28:03 -0600 | asked a question | Antialiasing in warpPerspective I have noticed that there is a lot of aliasing when I perform downsampling (resize) or distortions on an image (warpPerspective) using any of the interpolation methods. Is this a limitation of the opencv implementations? Can someone suggest a method to effectively antialias the images? I have already tried the various interpolation schemes and they do not give any better results. I'm particularly interesting in correcting for the jagged edges in PNG images. The below image has been creating using the function:
Edit: Imagemagick and Opencv Comparison |