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automatic sub-pixel checkerboard / chessboard / deltille pattern detection

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Hi,libcbdetect's calibration of fish-eye camera(FOV >180) is not as good as opencv built-in, why?

大神你好,有一个小问题,你写的算法在多数情况下能够检测完整的棋盘格,但是在棋盘格边缘模糊的时候(拍的有一点模糊,而且使用打印的,黑色格子(左上、右下)之间连接是一个短线,会检测失败,有什么改进的方案呢

in boards_from_cornersr.cc if(!params.overlay) { // start from random index std::default_random_engine e; auto time = std::chrono::system_clock::now().time_since_epoch(); e.seed(static_cast(time.count())); if (corners.p.size() == 0) { return; } start = e() % corners.p.size(); } when...