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| 2020-06-25 12:11:03 -0600 | commented answer | how to sum a 3 channel matrix to a one channel matrix? This took me way too long to figure out: cv::Mat reduceChannels(cv::InputArray _src, int _rtype) { cv::Mat src = _s |
| 2019-06-18 14:19:23 -0600 | answered a question | Cross compile opencv build fails for aarch64 targets The underlying issue is that gcc 4.8 doesn't define __ARM_NEON (4.9 does), so the check in https://github.com/opencv/ope |