{"id":21327,"date":"2025-04-18T16:01:02","date_gmt":"2025-04-18T09:01:02","guid":{"rendered":"https:\/\/quanghung.name.vn\/cong-nghe\/dung-tin-vao-hieu-ung-lam-mo-video-bi-che-van-co-the-bi-boc-tran-de-den-khong-ngo-bang-mot-thu-thuat\/"},"modified":"2025-04-18T16:01:02","modified_gmt":"2025-04-18T09:01:02","slug":"dung-tin-vao-hieu-ung-lam-mo-video-bi-che-van-co-the-bi-boc-tran-de-den-khong-ngo-bang-mot-thu-thuat","status":"publish","type":"post","link":"https:\/\/quanghung.name.vn\/?p=21327","title":{"rendered":"\u0110\u1eebng tin v\u00e0o hi\u1ec7u \u1ee9ng l\u00e0m m\u1edd: Video b\u1ecb che v\u1eabn c\u00f3 th\u1ec3 b\u1ecb \u2018b\u00f3c tr\u1ea7n\u2019 d\u1ec5 \u0111\u1ebfn kh\u00f4ng ng\u1edd b\u1eb1ng m\u1ed9t th\u1ee7 thu\u1eadt"},"content":{"rendered":"<div class=\"detail-body\">\n<h2 data-role=\"sapo\" class=\"news-sapo\" data-field=\"sapo\">\n                                            <span class=\"btn-nhuanbut24 nb24\" title=\"Nhu\u1eadn b\u00fat 24h\" data-type=\"btn-nhuanbut24\"><\/span><br \/>\n                                            Theo c\u00e1c chuy\u00ean gia, n\u1ebfu mu\u1ed1n che th\u1ee9 g\u00ec \u0111\u00f3 kh\u1ecfi video, t\u1ed1t nh\u1ea5t l\u00e0 \u0111\u1eebng quay n\u00f3 v\u00e0o, ho\u1eb7c n\u1ebfu c\u1ea7n, h\u00e3y d\u00f9ng l\u1edbp che ho\u00e0n to\u00e0n nh\u01b0 h\u00ecnh kh\u1ed1i m\u00e0u \u0111\u1eb7c &#8211; n\u01a1i kh\u00f4ng c\u00f2n th\u00f4ng tin n\u00e0o r\u00f2 r\u1ec9 ph\u00eda sau.<br \/>\n                                        <\/h2>\n<div id=\"admzonek9l7ejcm\"><\/div>\n<p>    <script>\n        if (pageSettings.allow3rd) admicroAD.unit.push(function () { admicroAD.show('admzonek9l7ejcm') });\n    <\/script><\/p>\n<div class=\"relationnews\" id=\"relationnews\" data-marked-zoneid=\"soha_detail_relatesnews\">\n<div id=\"insert-tag-redirect-new-relation\" class=\"hidden\"> <\/div>\n<\/p><\/div>\n<div class=\"detail-content afcbc-body \" data-role=\"content\" itemprop=\"articleBody\" data-io-article-url=\"\/dung-tin-vao-hieu-ung-lam-mo-video-bi-che-van-co-the-bi-boc-tran-de-den-khong-ngo-bang-mot-thu-thuat-1982504181342536.htm\">\n<div data-check-position=\"body_start\"><\/div>\n<p>Pixel h\u00f3a v\u00e0 l\u00e0m m\u1edd (blur) t\u1eeb l\u00e2u \u0111\u00e3 l\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ph\u1ed5 bi\u1ebfn \u0111\u1ec3 che n\u1ed9i dung nh\u1ea1y c\u1ea3m ho\u1eb7c c\u1ea7n ki\u1ec3m duy\u1ec7t trong \u1ea3nh v\u00e0 video. Tuy nhi\u00ean, m\u1ed9t lo\u1ea1t th\u1eed nghi\u1ec7m g\u1ea7n \u0111\u00e2y cho th\u1ea5y: vi\u1ec7c che b\u1eb1ng hi\u1ec7u \u1ee9ng h\u00ecnh kh\u1ed1i (mosaic) hay l\u00e0m m\u1edd nh\u1eb9 ho\u00e0n to\u00e0n kh\u00f4ng c\u00f2n an to\u00e0n. V\u1edbi c\u00e1c c\u00f4ng c\u1ee5 m\u00e3 ngu\u1ed3n m\u1edf s\u1eb5n c\u00f3, ng\u01b0\u1eddi d\u00f9ng b\u00ecnh th\u01b0\u1eddng c\u0169ng c\u00f3 th\u1ec3 &#8220;gi\u1ea3i m\u00e3&#8221; ph\u1ea7n b\u1ecb che v\u00e0 kh\u00f4i ph\u1ee5c t\u01b0\u01a1ng \u0111\u1ed1i n\u1ed9i dung ban \u0111\u1ea7u.<\/p>\n<p>Trong m\u1ed9t video m\u1edbi tr\u00ean YouTube, l\u1eadp tr\u00ecnh vi\u00ean n\u1ed5i ti\u1ebfng Jeff Geerling \u0111\u00e3 \u0111\u0103ng t\u1ea3i m\u1ed9t th\u1eed nghi\u1ec7m nh\u1ecf: anh pixel h\u00f3a m\u1ed9t c\u1eeda s\u1ed5 t\u1eadp tin tr\u00ean m\u00e0n h\u00ecnh v\u00e0 treo th\u01b0\u1edfng 50 USD cho b\u1ea5t k\u1ef3 ai c\u00f3 th\u1ec3 \u0111o\u00e1n \u0111\u01b0\u1ee3c n\u1ed9i dung trong khung h\u00ecnh \u0111\u00f3. Ch\u1ec9 trong ch\u01b0a \u0111\u1ea7y 24 gi\u1edd, nhi\u1ec1u ng\u01b0\u1eddi \u0111\u00e3 g\u1eedi l\u1ea1i h\u00ecnh \u1ea3nh m\u1edd nh\u01b0ng v\u1eabn x\u00e1c \u0111\u1ecbnh \u0111\u00fang n\u1ed9i dung g\u1ed1c &#8211; qua \u0111\u00f3 ch\u1ee9ng minh mosaic kh\u00f4ng ph\u1ea3i l\u00e0 l\u1edbp b\u1ea3o v\u1ec7 \u0111\u00e1ng tin c\u1eady.<\/p>\n<figure class=\"VCSortableInPreviewMode\" type=\"Photo\" style=\"\">\n<div> <img decoding=\"async\" w=\"1507\" h=\"1115\" alt=\" - \u1ea2nh 1.\" title=\" - \u1ea2nh 1.\" rel=\"lightbox\" src=\"https:\/\/sohanews.sohacdn.com\/160588918557773824\/2025\/4\/18\/2025-04-16-image-34-j1100-1744958489941-17449584903811080703700.jpg\" type=\"photo\" style=\"max-width:100%;\" class=\"\" data-is-alt-modified=\"true\" width=\"1507\" height=\"1115\" loading=\"lazy\">                             <\/div><figcaption class=\"PhotoCMS_Caption\">\n<p data-placeholder=\"Nh\u1eadp ch\u00fa th\u00edch \u1ea3nh\" class=\"\">N\u1ebfu mu\u1ed1n che th\u1ee9 g\u00ec \u0111\u00f3 kh\u1ecfi video, t\u1ed1t nh\u1ea5t l\u00e0 \u0111\u1eebng quay n\u00f3 v\u00e0o, ho\u1eb7c n\u1ebfu c\u1ea7n, h\u00e3y d\u00f9ng l\u1edbp che ho\u00e0n to\u00e0n nh\u01b0 h\u00ecnh kh\u1ed1i m\u00e0u \u0111\u1eb7c &#8211; n\u01a1i kh\u00f4ng c\u00f2n th\u00f4ng tin n\u00e0o r\u00f2 r\u1ec9 ph\u00eda sau. (\u1ea3nh minh h\u1ecda)<\/p>\n<\/figcaption><\/figure>\n<p>M\u1ed9t ng\u01b0\u1eddi d\u00f9ng GitHub t\u00ean KoKuToru \u0111\u00e3 chia s\u1ebb c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c ph\u1ea7n m\u1ec1m mi\u1ec5n ph\u00ed nh\u01b0 FFmpeg v\u00e0 GIMP \u0111\u1ec3 ph\u1ee5c d\u1ef1ng h\u00ecnh \u1ea3nh b\u1ecb pixel h\u00f3a. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y d\u1ef1a v\u00e0o s\u1ef1 d\u1ecbch chuy\u1ec3n c\u1ee7a khu v\u1ef1c b\u1ecb l\u00e0m m\u1edd qua nhi\u1ec1u khung h\u00ecnh: khi \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c l\u1edbp che di chuy\u1ec3n, c\u00e1c pixel b\u1ecb bi\u1ebfn d\u1ea1ng c\u0169ng thay \u0111\u1ed5i v\u1ecb tr\u00ed, cho ph\u00e9p ph\u1ea7n m\u1ec1m t\u1ed5ng h\u1ee3p d\u1eef li\u1ec7u t\u1eeb h\u00e0ng tr\u0103m khung h\u00ecnh kh\u00e1c nhau \u0111\u1ec3 t\u1ea1o ra b\u1ee9c \u1ea3nh &#8220;kh\u00f4i ph\u1ee5c&#8221; t\u01b0\u01a1ng \u0111\u1ed1i.<\/p>\n<p>Trong l\u1ea7n th\u1eed \u0111\u1ea7u ti\u00ean, KoKuToru d\u00f9ng tay \u0111\u1ec3 ph\u00e2n t\u00edch th\u1ee7 c\u00f4ng c\u00e1c khung h\u00ecnh v\u00e0 ch\u1ec9 thu \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 m\u1edd nh\u00f2e. Nh\u01b0ng \u1edf l\u1ea7n th\u1ee9 hai, anh d\u00f9ng FFmpeg \u0111\u1ec3 tr\u00edch xu\u1ea5t 200 khung h\u00ecnh c\u00f3 ch\u1ee9a v\u00f9ng b\u1ecb che, r\u1ed3i \u00e1p d\u1ee5ng thu\u1eadt to\u00e1n ph\u00e1t hi\u1ec7n \u0111\u01b0\u1eddng vi\u1ec1n (edge detection) \u0111\u1ec3 t\u00e1i d\u1ef1ng h\u00ecnh \u1ea3nh r\u00f5 r\u00e0ng h\u01a1n r\u1ea5t nhi\u1ec1u. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y t\u01b0\u01a1ng t\u1ef1 v\u1edbi nh\u1eefng g\u00ec c\u00e1c c\u00f4ng ngh\u1ec7 n\u00e2ng c\u1ea5p h\u00ecnh \u1ea3nh trong game hi\u1ec7n \u0111\u1ea1i \u0111ang s\u1eed d\u1ee5ng &#8211; nh\u01b0 TAA, FSR, DLSS ho\u1eb7c XeSS &#8211; v\u1ed1n t\u1eadn d\u1ee5ng d\u1eef li\u1ec7u chuy\u1ec3n \u0111\u1ed9ng \u0111\u1ec3 l\u00e0m n\u00e9t l\u1ea1i h\u00ecnh \u1ea3nh \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p.<\/p>\n<p>Geerling \u0111\u1eb7t c\u00e2u h\u1ecfi li\u1ec7u s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng l\u00e0m m\u1edd (blur) c\u00f3 an to\u00e0n h\u01a1n kh\u00f4ng. Nh\u01b0ng nhi\u1ec1u ng\u01b0\u1eddi b\u00ecnh lu\u1eadn cho r\u1eb1ng ngay c\u1ea3 blur c\u0169ng c\u00f3 th\u1ec3 b\u1ecb ph\u1ee5c h\u1ed3i, b\u1edfi ng\u00e0nh thi\u00ean v\u0103n h\u1ecdc t\u1eeb l\u00e2u \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c c\u00f4ng c\u1ee5 \u0111\u1ec3 x\u1eed l\u00fd h\u00ecnh \u1ea3nh b\u1ecb m\u1edd do kh\u00ed quy\u1ec3n &#8211; v\u00e0 ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng nh\u1eefng k\u1ef9 thu\u1eadt n\u00e0y \u0111\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c blur trong video.<\/p>\n<p>K\u1ebft lu\u1eadn c\u1ee7a Geerling kh\u00e1 r\u00f5 r\u00e0ng: n\u1ebfu mu\u1ed1n che th\u1ee9 g\u00ec \u0111\u00f3 kh\u1ecfi video, t\u1ed1t nh\u1ea5t l\u00e0 \u0111\u1eebng quay n\u00f3 v\u00e0o, ho\u1eb7c n\u1ebfu c\u1ea7n, h\u00e3y d\u00f9ng l\u1edbp che ho\u00e0n to\u00e0n nh\u01b0 h\u00ecnh kh\u1ed1i m\u00e0u \u0111\u1eb7c &#8211; n\u01a1i kh\u00f4ng c\u00f2n th\u00f4ng tin n\u00e0o r\u00f2 r\u1ec9 ph\u00eda sau.<\/p>\n<div class=\"VCSortableInPreviewMode link-content-footer IMSCurrentEditorEditObject\" type=\"link\">C\u1eadp nh\u1eadt m\u1edbi tr\u00ean VNeID ng\u01b0\u1eddi d\u00e2n c\u1ea7n bi\u1ebft \u0111\u1ec3 tr\u00e1nh m\u1ea5t quy\u1ec1n l\u1ee3i: H\u00e0nh kh\u00e1ch \u0111i m\u00e1y bay \u0111\u1eb7c bi\u1ec7t ch\u00fa \u00fd<\/div>\n<div id=\"admzonek1fs4xky\"><\/div>\n<p>    <script>\n        if (pageSettings.allow3rd) admicroAD.unit.push(function () { admicroAD.show('admzonek1fs4xky') });\n    <\/script><\/p>\n<div data-check-position=\"body_end\"><\/div>\n<\/p><\/div>\n<p>                                    <!-- d\u00f2ng s\u1ef1 ki\u1ec7n detail info= siteid198:thread:id0 ;\n                                         data = siteid198:threadnews:threadid0--><\/p>\n<div class=\"hidden\" id=\"box-thread-detail\" data-id-dsk=\"0\" thread-type=\"0\"><\/div>\n<div id=\"l1bi0c5b\"><\/div>\n<p>    <script>\n        if (pageSettings.allow3rd) admicroAD.unit.push(function () { 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8.62796C7.87277 8.54982 7.91667 8.44384 7.91667 8.33333V2.5C7.91667 2.38949 7.87277 2.28351 7.79463 2.20537C7.71649 2.12723 7.61051 2.08333 7.5 2.08333H6.66667C6.43655 2.08333 6.25 1.89679 6.25 1.66667C6.25 1.43655 6.43655 1.25 6.66667 1.25H7.5C7.83152 1.25 8.14946 1.3817 8.38388 1.61612C8.6183 1.85054 8.75 2.16848 8.75 2.5V8.33333C8.75 8.66485 8.6183 8.9828 8.38388 9.21722C8.14946 9.45164 7.83152 9.58333 7.5 9.58333H2.5C2.16848 9.58333 1.85054 9.45164 1.61612 9.21722C1.3817 8.9828 1.25 8.66485 1.25 8.33333V2.5C1.25 2.16848 1.3817 1.85054 1.61612 1.61612C1.85054 1.3817 2.16848 1.25 2.5 1.25H3.33333C3.56345 1.25 3.75 1.43655 3.75 1.66667C3.75 1.89679 3.56345 2.08333 3.33333 2.08333H2.5Z\" fill=\"black\"><\/path><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M2.91666 1.25C2.91666 0.789762 3.28976 0.416667 3.75 0.416667H6.25C6.71023 0.416667 7.08333 0.789762 7.08333 1.25V2.08333C7.08333 2.54357 6.71023 2.91667 6.25 2.91667H3.75C3.28976 2.91667 2.91666 2.54357 2.91666 2.08333V1.25ZM6.25 1.25H3.75V2.08333H6.25V1.25Z\" fill=\"black\"><\/path>\n                        <\/svg><br \/>\n                        <i>Copy link<\/i><br \/>\n                    <\/span><\/p>\n<div class=\"link-source-detail\">\n                <span class=\"link-source-detail-title\">Link b\u00e0i g\u1ed1c<\/span><br \/>\n                <span class=\"btn-copy-link-source btncopy\"><br \/>\n                        <svg width=\"10\" height=\"10\" viewbox=\"0 0 10 10\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M2.5 2.08333C2.38949 2.08333 2.28351 2.12723 2.20537 2.20537C2.12723 2.28351 2.08333 2.38949 2.08333 2.5V8.33333C2.08333 8.44384 2.12723 8.54982 2.20537 8.62796C2.28351 8.7061 2.38949 8.75 2.5 8.75H7.5C7.61051 8.75 7.71649 8.7061 7.79463 8.62796C7.87277 8.54982 7.91667 8.44384 7.91667 8.33333V2.5C7.91667 2.38949 7.87277 2.28351 7.79463 2.20537C7.71649 2.12723 7.61051 2.08333 7.5 2.08333H6.66667C6.43655 2.08333 6.25 1.89679 6.25 1.66667C6.25 1.43655 6.43655 1.25 6.66667 1.25H7.5C7.83152 1.25 8.14946 1.3817 8.38388 1.61612C8.6183 1.85054 8.75 2.16848 8.75 2.5V8.33333C8.75 8.66485 8.6183 8.9828 8.38388 9.21722C8.14946 9.45164 7.83152 9.58333 7.5 9.58333H2.5C2.16848 9.58333 1.85054 9.45164 1.61612 9.21722C1.3817 8.9828 1.25 8.66485 1.25 8.33333V2.5C1.25 2.16848 1.3817 1.85054 1.61612 1.61612C1.85054 1.3817 2.16848 1.25 2.5 1.25H3.33333C3.56345 1.25 3.75 1.43655 3.75 1.66667C3.75 1.89679 3.56345 2.08333 3.33333 2.08333H2.5Z\" fill=\"white\"><\/path><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M2.91666 1.25C2.91666 0.789762 3.28976 0.416667 3.75 0.416667H6.25C6.71023 0.416667 7.08333 0.789762 7.08333 1.25V2.08333C7.08333 2.54357 6.71023 2.91667 6.25 2.91667H3.75C3.28976 2.91667 2.91666 2.54357 2.91666 2.08333V1.25ZM6.25 1.25H3.75V2.08333H6.25V1.25Z\" fill=\"white\"><\/path>\n                        <\/svg><br \/>\n                    <i>L\u1ea5y link<\/i><br \/>\n                <\/span><br \/>\n                <span class=\"link-source-full\"><\/span><\/p>\n<div class=\"arrow-down\"><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Theo c\u00e1c chuy\u00ean gia, n\u1ebfu mu\u1ed1n che th\u1ee9 g\u00ec \u0111\u00f3 kh\u1ecfi video, t\u1ed1t nh\u1ea5t l\u00e0 \u0111\u1eebng quay n\u00f3 v\u00e0o, ho\u1eb7c n\u1ebfu c\u1ea7n, h\u00e3y d\u00f9ng l\u1edbp che ho\u00e0n to\u00e0n nh\u01b0 h\u00ecnh kh\u1ed1i m\u00e0u \u0111\u1eb7c &#8211; n\u01a1i kh\u00f4ng c\u00f2n th\u00f4ng tin n\u00e0o r\u00f2 r\u1ec9 ph\u00eda sau. Pixel h\u00f3a v\u00e0 l\u00e0m m\u1edd (blur) t\u1eeb l\u00e2u \u0111\u00e3 l\u00e0 c\u00e1c<\/p>\n","protected":false},"author":1,"featured_media":21328,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAow44a6DA:productID":"","footnotes":""},"categories":[3],"tags":[6113],"class_list":["post-21327","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghe","tag-anh-lam-mo"],"_links":{"self":[{"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=\/wp\/v2\/posts\/21327","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=21327"}],"version-history":[{"count":0,"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=\/wp\/v2\/posts\/21327\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=\/wp\/v2\/media\/21328"}],"wp:attachment":[{"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quanghung.name.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}