{"id":21,"date":"2026-06-05T08:31:00","date_gmt":"2026-06-05T01:31:00","guid":{"rendered":"http:\/\/phanmemchamcongcamera.com\/?p=21"},"modified":"2026-06-05T08:31:00","modified_gmt":"2026-06-05T01:31:00","slug":"cong-nghe-nhan-dien-khuon-mat-trong-cham-cong-hoat-dong-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/phanmemchamcongcamera.com\/?p=21","title":{"rendered":"C\u00f4ng ngh\u1ec7 nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t trong ch\u1ea5m c\u00f4ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o"},"content":{"rendered":"<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/phanmemchamcongcamera.com\/wp-content\/uploads\/2026\/06\/bc_13529_10171.jpg\" alt=\"\"\/><\/figure>\n<p>Ph\u1ea7n m\u1ec1m ch\u1ea5m c\u00f4ng b\u1eb1ng camera nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t \u0111ang d\u1ea7n thay th\u1ebf m\u00e1y ch\u1ea5m c\u00f4ng v\u00e2n tay v\u00e0 th\u1ebb t\u1eeb t\u1ea1i r\u1ea5t nhi\u1ec1u doanh nghi\u1ec7p. Tuy nhi\u00ean, kh\u00f4ng \u00edt ng\u01b0\u1eddi qu\u1ea3n l\u00fd v\u1eabn c\u00f2n m\u01a1 h\u1ed3 v\u1ec1 c\u00e1ch c\u00f4ng ngh\u1ec7 n\u00e0y th\u1ef1c s\u1ef1 v\u1eadn h\u00e0nh b\u00ean trong. Hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng ch\u1ec9 gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p m\u00e0 c\u00f2n bi\u1ebft c\u00e1ch kh\u1eafc ph\u1ee5c khi h\u1ec7 th\u1ed1ng nh\u1eadn di\u1ec7n sai ho\u1eb7c ch\u1eadm.<\/p>\n<h2>T\u1eeb h\u00ecnh \u1ea3nh khu\u00f4n m\u1eb7t \u0111\u1ebfn d\u1eef li\u1ec7u s\u1ed1<\/h2>\n<p>Khi m\u1ed9t nh\u00e2n vi\u00ean \u0111\u1ee9ng tr\u01b0\u1edbc camera, h\u1ec7 th\u1ed1ng kh\u00f4ng l\u01b0u l\u1ea1i b\u1ee9c \u1ea3nh khu\u00f4n m\u1eb7t theo c\u00e1ch ch\u00fang ta th\u01b0\u1eddng ngh\u0129. Thay v\u00e0o \u0111\u00f3, camera ghi nh\u1eadn h\u00ecnh \u1ea3nh v\u00e0 ph\u1ea7n m\u1ec1m ti\u1ebfn h\u00e0nh ph\u00e2n t\u00edch c\u00e1c \u0111i\u1ec3m \u0111\u1eb7c tr\u01b0ng tr\u00ean g\u01b0\u01a1ng m\u1eb7t nh\u01b0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai m\u1eaft, \u0111\u1ed9 r\u1ed9ng c\u1ee7a s\u1ed1ng m\u0169i, h\u00ecnh d\u1ea1ng g\u00f2 m\u00e1, \u0111\u01b0\u1eddng vi\u1ec1n h\u00e0m v\u00e0 v\u1ecb tr\u00ed c\u1ee7a kh\u00f3e mi\u1ec7ng. Nh\u1eefng th\u00f4ng s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a th\u00e0nh m\u1ed9t chu\u1ed7i s\u1ed1 g\u1ecdi l\u00e0 vector \u0111\u1eb7c tr\u01b0ng, hay c\u00f2n g\u1ecdi l\u00e0 faceprint.<\/p>\n<p>M\u1ed7i khu\u00f4n m\u1eb7t s\u1ebd t\u1ea1o ra m\u1ed9t vector ri\u00eang bi\u1ec7t v\u1edbi h\u00e0ng tr\u0103m chi\u1ec1u d\u1eef li\u1ec7u. Ch\u00ednh v\u00ec l\u01b0u tr\u1eef d\u01b0\u1edbi d\u1ea1ng chu\u1ed7i s\u1ed1 to\u00e1n h\u1ecdc thay v\u00ec \u1ea3nh g\u1ed1c, n\u00ean ngay c\u1ea3 khi c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u1ecb r\u00f2 r\u1ec9 th\u00ec k\u1ebb x\u1ea5u c\u0169ng r\u1ea5t kh\u00f3 t\u00e1i t\u1ea1o l\u1ea1i khu\u00f4n m\u1eb7t th\u1eadt c\u1ee7a nh\u00e2n vi\u00ean. \u0110\u00e2y l\u00e0 \u0111i\u1ec3m quan tr\u1ecdng v\u1ec1 m\u1eb7t b\u1ea3o m\u1eadt m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi ch\u01b0a \u0111\u1ec3 \u00fd.<\/p>\n<h2>Qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd v\u00e0 \u0111\u1ed1i chi\u1ebfu<\/h2>\n<p>H\u1ec7 th\u1ed1ng ch\u1ea5m c\u00f4ng khu\u00f4n m\u1eb7t v\u1eadn h\u00e0nh qua hai giai \u0111o\u1ea1n ch\u00ednh. Giai \u0111o\u1ea1n \u0111\u1ea7u ti\u00ean l\u00e0 \u0111\u0103ng k\u00fd, khi nh\u00e2n vi\u00ean m\u1edbi \u0111\u01b0\u1ee3c ch\u1ee5p g\u01b0\u01a1ng m\u1eb7t t\u1eeb nhi\u1ec1u g\u00f3c \u0111\u1ed9 kh\u00e1c nhau \u0111\u1ec3 t\u1ea1o ra m\u1eabu chu\u1ea9n l\u01b0u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. Giai \u0111o\u1ea1n th\u1ee9 hai l\u00e0 \u0111\u1ed1i chi\u1ebfu, di\u1ec5n ra m\u1ed7i ng\u00e0y khi nh\u00e2n vi\u00ean \u0111\u1ebfn ch\u1ea5m c\u00f4ng.<\/p>\n<p>Trong qu\u00e1 tr\u00ecnh \u0111\u1ed1i chi\u1ebfu, ph\u1ea7n m\u1ec1m so s\u00e1nh vector v\u1eeba thu \u0111\u01b0\u1ee3c v\u1edbi to\u00e0n b\u1ed9 m\u1eabu \u0111\u00e3 l\u01b0u v\u00e0 t\u00ednh ra m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng. N\u1ebfu \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng v\u01b0\u1ee3t qua ng\u01b0\u1ee1ng \u0111\u00e3 c\u00e0i \u0111\u1eb7t, h\u1ec7 th\u1ed1ng x\u00e1c nh\u1eadn \u0111\u00fang ng\u01b0\u1eddi v\u00e0 ghi nh\u1eadn th\u1eddi gian. To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng ch\u1ec9 m\u1ea5t ch\u01b0a \u0111\u1ebfn m\u1ed9t gi\u00e2y tr\u00ean c\u00e1c thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h2>Tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 h\u1ecdc s\u00e2u<\/h2>\n<p>S\u1ee9c m\u1ea1nh th\u1eadt s\u1ef1 c\u1ee7a c\u00f4ng ngh\u1ec7 nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t ng\u00e0y nay \u0111\u1ebfn t\u1eeb m\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp, m\u1ed9t nh\u00e1nh c\u1ee7a h\u1ecdc s\u00e2u. C\u00e1c m\u00f4 h\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n tr\u00ean h\u00e0ng tri\u1ec7u khu\u00f4n m\u1eb7t kh\u00e1c nhau n\u00ean c\u00f3 kh\u1ea3 n\u0103ng nh\u1eadn di\u1ec7n ch\u00ednh x\u00e1c ngay c\u1ea3 khi nh\u00e2n vi\u00ean thay \u0111\u1ed5i ki\u1ec3u t\u00f3c, \u0111eo k\u00ednh, \u0111\u1ec3 r\u00e2u ho\u1eb7c gi\u00e0 \u0111i theo th\u1eddi gian.<\/p>\n<p>\u0110i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a AI l\u00e0 kh\u1ea3 n\u0103ng t\u1ef1 c\u1ea3i thi\u1ec7n. M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng cao c\u1ea5p c\u00f2n c\u1eadp nh\u1eadt m\u1eabu khu\u00f4n m\u1eb7t theo th\u1eddi gian, ngh\u0129a l\u00e0 m\u1ed7i l\u1ea7n ch\u1ea5m c\u00f4ng th\u00e0nh c\u00f4ng, n\u00f3 \u00e2m th\u1ea7m tinh ch\u1ec9nh l\u1ea1i faceprint \u0111\u1ec3 theo k\u1ecbp nh\u1eefng thay \u0111\u1ed5i t\u1ef1 nhi\u00ean tr\u00ean g\u01b0\u01a1ng m\u1eb7t. Nh\u1edd v\u1eady, t\u1ec9 l\u1ec7 nh\u1eadn di\u1ec7n sai gi\u1ea3m d\u1ea7n qua th\u1eddi gian s\u1eed d\u1ee5ng.<\/p>\n<h2>C\u00f4ng ngh\u1ec7 ch\u1ed1ng gi\u1ea3 m\u1ea1o<\/h2>\n<p>M\u1ed9t th\u1eafc m\u1eafc ph\u1ed5 bi\u1ebfn l\u00e0 li\u1ec7u c\u00f3 th\u1ec3 d\u00f9ng \u1ea3nh ch\u1ee5p hay video \u0111\u1ec3 qua m\u1eb7t h\u1ec7 th\u1ed1ng hay kh\u00f4ng. C\u00e1c ph\u1ea7n m\u1ec1m ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c trang b\u1ecb c\u00f4ng ngh\u1ec7 ph\u00e1t hi\u1ec7n s\u1ef1 s\u1ed1ng, hay liveness detection, \u0111\u1ec3 ng\u0103n ch\u1eb7n gian l\u1eadn n\u00e0y. H\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng ch\u1edbp m\u1eaft, quay \u0111\u1ea7u nh\u1eb9, ho\u1eb7c ph\u00e2n t\u00edch chi\u1ec1u s\u00e2u ba chi\u1ec1u c\u1ee7a khu\u00f4n m\u1eb7t b\u1eb1ng camera h\u1ed3ng ngo\u1ea1i.<\/p>\n<ul>\n<li>Ph\u00e1t hi\u1ec7n k\u1ebft c\u1ea5u da th\u1eadt so v\u1edbi b\u1ec1 m\u1eb7t ph\u1eb3ng c\u1ee7a \u1ea3nh in<\/li>\n<li>Ph\u00e2n t\u00edch ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean tr\u00ean g\u01b0\u01a1ng m\u1eb7t<\/li>\n<li>S\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn chi\u1ec1u s\u00e2u \u0111\u1ec3 d\u1ef1ng m\u00f4 h\u00ecnh ba chi\u1ec1u<\/li>\n<li>Y\u00eau c\u1ea7u chuy\u1ec3n \u0111\u1ed9ng ng\u1eabu nhi\u00ean \u0111\u1ec3 lo\u1ea1i tr\u1eeb video ph\u00e1t l\u1ea1i<\/li>\n<\/ul>\n<h2>Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h2>\n<p>D\u00f9 c\u00f4ng ngh\u1ec7 r\u1ea5t m\u1ea1nh, m\u00f4i tr\u01b0\u1eddng l\u1eafp \u0111\u1eb7t v\u1eabn \u0111\u00f3ng vai tr\u00f2 quy\u1ebft \u0111\u1ecbnh. \u00c1nh s\u00e1ng ng\u01b0\u1ee3c chi\u1ec1u, camera \u0111\u1eb7t qu\u00e1 cao ho\u1eb7c qu\u00e1 th\u1ea5p, kho\u1ea3ng c\u00e1ch \u0111\u1ee9ng kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec1u c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 ch\u00ednh x\u00e1c. Nhi\u1ec7t \u0111\u1ed9 m\u00e0u c\u1ee7a \u0111\u00e8n c\u0169ng \u1ea3nh h\u01b0\u1edfng t\u1edbi ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh \u0111\u1ea7u v\u00e0o.<\/p>\n<p>V\u00ec l\u00fd do n\u00e0y, khi tri\u1ec3n khai h\u1ec7 th\u1ed1ng, doanh nghi\u1ec7p n\u00ean \u0111\u1eb7t camera ngang t\u1ea7m m\u1eaft, tr\u00e1nh ngu\u1ed3n s\u00e1ng m\u1ea1nh chi\u1ebfu tr\u1ef1c ti\u1ebfp v\u00e0o \u1ed1ng k\u00ednh v\u00e0 b\u1ed1 tr\u00ed v\u1ea1ch \u0111\u1ee9ng c\u1ed1 \u0111\u1ecbnh cho nh\u00e2n vi\u00ean. Vi\u1ec7c t\u1ed1i \u01b0u m\u00f4i tr\u01b0\u1eddng v\u1eadt l\u00fd \u0111\u00f4i khi mang l\u1ea1i hi\u1ec7u qu\u1ea3 l\u1edbn h\u01a1n c\u1ea3 vi\u1ec7c n\u00e2ng c\u1ea5p ph\u1ea7n m\u1ec1m.<\/p>\n<h2>V\u00ec sao c\u00f4ng ngh\u1ec7 n\u00e0y ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn<\/h2>\n<p>So v\u1edbi v\u00e2n tay v\u1ed1n d\u1ec5 b\u1ecb l\u1ed7i khi tay \u01b0\u1edbt, b\u1ea9n ho\u1eb7c tr\u1ea7y x\u01b0\u1edbc, v\u00e0 th\u1ebb t\u1eeb v\u1ed1n d\u1ec5 b\u1ecb m\u01b0\u1ee3n nhau qu\u1eb9t h\u1ed9, nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t mang l\u1ea1i tr\u1ea3i nghi\u1ec7m kh\u00f4ng ti\u1ebfp x\u00fac, nhanh ch\u00f3ng v\u00e0 kh\u00f3 gian l\u1eadn h\u01a1n h\u1eb3n. Sau giai \u0111o\u1ea1n d\u1ecbch b\u1ec7nh, nhu c\u1ea7u v\u1ec1 gi\u1ea3i ph\u00e1p ch\u1ea5m c\u00f4ng kh\u00f4ng ch\u1ea1m c\u00e0ng t\u0103ng m\u1ea1nh, khi\u1ebfn \u0111\u00e2y tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c nhi\u1ec1u doanh nghi\u1ec7p \u01b0u ti\u00ean khi n\u00e2ng c\u1ea5p h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd nh\u00e2n s\u1ef1 c\u1ee7a m\u00ecnh.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ph\u1ea7n m\u1ec1m ch\u1ea5m c\u00f4ng b\u1eb1ng camera nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t \u0111ang d\u1ea7n thay th\u1ebf m\u00e1y ch\u1ea5m c\u00f4ng v\u00e2n tay v\u00e0 th\u1ebb t\u1eeb t\u1ea1i r\u1ea5t nhi\u1ec1u doanh nghi\u1ec7p. Tuy nhi\u00ean, kh\u00f4ng \u00edt ng\u01b0\u1eddi qu\u1ea3n l\u00fd v\u1eabn c\u00f2n m\u01a1 h\u1ed3 v\u1ec1 c\u00e1ch c\u00f4ng ngh\u1ec7 n\u00e0y th\u1ef1c s\u1ef1 v\u1eadn h\u00e0nh b\u00ean trong. Hi\u1ec3u &hellip;<\/p>\n","protected":false},"author":0,"featured_media":20,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chua-phan-loai"],"_links":{"self":[{"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=\/wp\/v2\/posts\/21","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=21"}],"version-history":[{"count":0,"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=\/wp\/v2\/posts\/21\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=\/wp\/v2\/media\/20"}],"wp:attachment":[{"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phanmemchamcongcamera.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}