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Hi, im new in opencv. I have to match images which have more or less content like logos, icons, grafical illustration, technical drawings etc., to find out, which of them are duplicated within an huge database of images. The detection should be scale-invariant and rotation invariant (90 degree steps). Is keypoint-detection and matching the correct approach for this task or how could this be done? Thanks!

Hi, im new in opencv. I have to match images which have more or less content like logos, icons, grafical illustration, technical drawings etc., to find out, which of them are duplicated within an huge database of images. The detection should be scale-invariant and rotation invariant (90 degree steps). Is keypoint-detection and matching the correct approach for this task or how could this be done? Thanks!