I have a chessboard image of size 3264x2448 when running on my Android 1.2 GHz Quad with opencv 3.2 and CALIB_CB_ADAPTIVE_THRESH + CALIB_CB_NORMALIZE_IMAGE + CALIB_CB_FAST_CHECK flag on,It take 4 minutes to return a result.How can I make it run faster but not losing any resolution.
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