{"image_url":null,"height":"190","provider_name":"Hatena Blog","blog_title":"\u9591\u53e4\u9ce5","categories":["C++","Python"],"blog_url":"https://www.little-cuckoo.jp/","url":"https://www.little-cuckoo.jp/entry/2025/04/02/162612","version":"1.0","width":"100%","title":"\u307e\u305f\u914d\u5217\u306e\u8981\u7d20\u540c\u58eb\u306e\u639b\u3051\u7b97\u3057\u305f\u3044\u3060\u3051\u306a\u306e\u306b\u884c\u5217\u8a08\u7b97\u3055\u305b\u3066\u3057\u307e\u3063\u305f","author_url":"https://blog.hatena.ne.jp/wata_d/","description":"OpenCV\u3067Mat\u540c\u58eb\u306e\u639b\u3051\u7b97\u3057\u305f\u7d50\u679c\u304c\u601d\u3063\u3066\u305f\u306e\u3068\u9055\u3063\u3066\u3061\u3087\u3063\u3068\u30cf\u30de\u3063\u305f\u3002 cv::Mat A = cv::Mat1f({2, 2}, {1, 2, 3, 4}); cv::Mat B = cv::Mat1f({2, 2}, {5, 6, 7, 8}); // [1, 2] [5, 6] [19, 22] // [3, 4] x [7, 8] = [43, 50] cv::Mat C = A * B; // [1, 2] [5, 6] [ 5, 12] // [3, 4] x [7, 8] = [21, 32] cv::Mat D; cv::multiply(A, B, D); opera\u2026","published":"2025-04-02 16:26:12","author_name":"wata_d","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.little-cuckoo.jp%2Fentry%2F2025%2F04%2F02%2F162612\" title=\"\u307e\u305f\u914d\u5217\u306e\u8981\u7d20\u540c\u58eb\u306e\u639b\u3051\u7b97\u3057\u305f\u3044\u3060\u3051\u306a\u306e\u306b\u884c\u5217\u8a08\u7b97\u3055\u305b\u3066\u3057\u307e\u3063\u305f - \u9591\u53e4\u9ce5\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","provider_url":"https://hatena.blog"}