{"id":738,"date":"2020-03-11T06:09:56","date_gmt":"2020-03-10T23:09:56","guid":{"rendered":"http:\/\/ainoodle.website\/?p=738"},"modified":"2020-03-11T06:09:56","modified_gmt":"2020-03-10T23:09:56","slug":"chung-tay-chong-covid-19-lam-thu-he-thong-nhac-deo-khau-trang-bang-opencv","status":"publish","type":"post","link":"https:\/\/miai.vn\/?p=738","title":{"rendered":"Chung tay ch\u1ed1ng COVID-19, l\u00e0m th\u1eed h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n kh\u1ea9u trang v\u00e0 nh\u1eafc nh\u1edf n\u1ebfu kh\u00f4ng \u0111eo b\u1eb1ng OpenCV"},"content":{"rendered":"\n<p>T\u00ecnh h\u00ecnh l\u00e0 m\u00f9a d\u1ecbch COVID 19 qu\u00e1 c\u0103ng th\u1eb3ng n\u00ean h\u00f4m nay m\u00ecnh xin gi\u1edbi thi\u1ec7u c\u00f9ng c\u00e1c b\u1ea1n c\u00e1ch x\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n \u0111eo kh\u1ea9u trang v\u00e0 nh\u1eafc nh\u1edf n\u1ebfu kh\u00f4ng \u0111eo b\u1eb1ng OpenCV nh\u00e9.<\/p>\n\n\n\n<p>H\u1ec7 th\u1ed1ng c\u1ee7a ch\u00fang ta s\u1ebd gi\u00e1m s\u00e1t qu\u00e1 camera, ki\u1ec3m tra xem ng\u01b0\u1eddi d\u00f9ng c\u00f3 \u0111eo kh\u1ea9u trang hay kh\u00f4ng \u0111\u1ec3 th\u00f4ng b\u00e1o l\u00ean m\u00e0n h\u00ecnh. Trong th\u1ef1c t\u1ebf ch\u00fang ta c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i ra h\u1ec7 th\u1ed1ng loa \u0111\u1ec3 c\u1ea3nh b\u00e1o ho\u1eb7c th\u00f4ng b\u00e1o cho l\u1ef1c l\u01b0\u1ee3ng b\u1ea3o v\u1ec7 \u0111\u1ec3 y\u00eau c\u1ea7u \u0111eo kh\u1ea9u trang tr\u01b0\u1edbc khi v\u00e0o t\u00f2a nh\u00e0.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.sfcdcp.org\/wp-content\/uploads\/2017\/12\/iStock-182423254-830x425.jpg\" alt=\"ph\u00e1t hi\u1ec7n \u0111eo kh\u1ea9u trang\"\/><\/figure>\n\n\n\n<script async=\"\" src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<!-- InPost_Ad -->\n<ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-5095883280136027\" data-ad-slot=\"7735063137\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<p>\u0110\u1ea1i \u00fd l\u00e0 nh\u01b0 v\u1eady, b\u00e2y gi\u1edd b\u1eaft tay n\u00e0o!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u1ea7n 1- C\u00e1ch l\u00e0m b\u00e0i to\u00e1n<\/h2>\n\n\n\n<p>V\u1edbi b\u00e0i n\u00e0y c\u00f3 nhi\u00e8u c\u00e1ch \u0111\u1ec3 l\u00e0m v\u00e0 m\u1ed7i c\u00e1ch c\u00f3 \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m kh\u00e1c nhau. M\u00ecnh kh\u00f4ng c\u00f3 \u0111i\u1ec1u ki\u1ec7n th\u1eed \u0111\u1ee7 c\u00e1c c\u00e1ch n\u00ean c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 th\u1eed xem nh\u01b0 n\u00e0o nh\u00e9. <\/p>\n\n\n\n<p>C\u00e1c c\u00e1ch tri\u1ec3n khai g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>C\u00e1ch 1:<\/strong> Ph\u00e1t hi\u1ec7n khu\u00f4n m\u1eb7t, sau \u0111\u00f3 detect kh\u1ea9u trang tr\u00ean m\u1eb7t (b\u1eb1ng SSD, YOLO&#8230;). N\u1ebfu kh\u00f4ng c\u00f3 kh\u1ea9u trang th\u00ec c\u1ea3nh b\u00e1o. . \u01afu \u0111i\u1ec3m l\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c kh\u00e1c cao nh\u01b0ng nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0  c\u1ea7n ph\u1ea3i c\u00f3 data v\u1ec1 face mask \u0111\u1ec3 train<\/li><li><strong>C\u00e1ch 2:<\/strong> Ph\u00e1t hi\u1ec7n khu\u00f4n m\u1eb7t sau \u0111\u00f3 s\u1eed d\u1ee5ng landmark \u0111\u1ec3 detect mouth area. Sau \u0111\u00f3 t\u00ednh to\u00e1n average saturation v\u00e0 compare v\u1edbi 1 threshold do ch\u00fang ta \u0111\u1eb7t ra \u0111\u1ec3 check xem c\u00f3 \u0111eo kh\u1ea9u trang hay kh\u00f4ng. C\u00e1ch n\u00e1y c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 kh\u00f4ng c\u1ea7n data, t\u1ed1c \u0111\u1ed9 ch\u1ea1y cao h\u01a1n c\u00e1ch 1 nh\u01b0ng \u0111\u00f4i khi do \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng thay \u0111\u1ed5i th\u00ec c\u00f3 th\u1ec3 kh\u00f4ng detect chu\u1ea9n.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/pyimagesearch.com\/wp-content\/uploads\/2017\/04\/facial_landmarks_68markup.jpg\" alt=\"facial landmark\"\/><figcaption>Ngu\u1ed3n: pyimagesearch.com<\/figcaption><\/figure>\n\n\n\n<script async=\"\" src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<!-- InPost_Ad -->\n<ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-5095883280136027\" data-ad-slot=\"7735063137\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<p>Trong b\u00e0i n\u00e0y m\u00ecnh ch\u1ecdn C\u00e1ch 2 v\u00ec l\u00fd do r\u1ea5t \u0111\u01a1n gi\u1ea3n&#8230;.m\u00ecnh ch\u01b0a c\u00f3 data face mask \u0111\u1ec3 train:D<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u1ea7n 2 &#8211; T\u1ea3i m\u00e3 ngu\u1ed3n v\u00e0 c\u00e0i \u0111\u1eb7t th\u01b0 vi\u1ec7n<\/h2>\n\n\n\n<p>L\u00fd thuy\u1ebft l\u00e0 nh\u01b0 v\u1eady b\u00e2y gi\u1edd ch\u00fang ta \u0111\u00e0o s\u00e2u v\u00e0o code \u0111\u1ec3 xem nh\u00e9. \u0110\u1ea7u ti\u00ean c\u00e1c b\u1ea1n t\u1ea1o th\u01b0 m\u1ee5c MiAI_Mask_Detection \u0111\u1ec3 l\u01b0u tr\u1eef project. <\/p>\n\n\n\n<p>Ti\u1ebfp theo c\u00e1c b\u1ea1n clone m\u00e3 ngu\u1ed3n v\u1ec1 b\u1eb1ng l\u1ec7nh git th\u1ea7n th\u00e1nh:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">git clone https:\/\/github.com\/thangnch\/MiAI_Mask_Detection .<\/pre>\n\n\n\n<p>Ch\u00fa \u00fd d\u1ea5u ch\u1ea5m \u1edf cu\u1ed1i d\u00f2ng l\u1ec7nh nh\u00e9 anh em. <\/p>\n\n\n\n<p>Sau khi \u0111\u1ee3i m\u1ed9t ch\u00fat cho m\u00e3 ngu\u1ed3n t\u1ea3i v\u1ec1, anh em ti\u1ebfn h\u00e0nh c\u00e0i \u0111\u1eb7t c\u00e1c th\u01b0 vi\u1ec7n c\u1ea7n thi\u1ebft. Ph\u1ea7n n\u00e0y c\u00f3 c\u00e0i \u0111\u1eb7t th\u00eam dlib v\u00e0 cmake n\u00ean tr\u00ean window c\u00f3 th\u1ec3 l\u1ed7i ch\u00fat nh\u00e9. N\u1ebfu c\u00e0i l\u1ed7i th\u00ec anh em post l\u00ean Group trao \u0111\u1ed5i, chia s\u1ebb: <strong><a rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\" href=\"https:\/\/facebook.com\/groups\/miaigroup\" target=\"_blank\">https:\/\/facebook.com\/groups\/miaigroup<\/a><\/strong> \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 nh\u00e9.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">pip install -r setup.txt<\/pre>\n\n\n\n<p>Sau khi c\u00e0i \u0111\u1eb7t xong c\u00e1c th\u01b0 vi\u1ec7n, c\u00e1c b\u1ea1n t\u1ea3i file landmark predict&nbsp;<strong><a rel=\"noreferrer noopener\" href=\"https:\/\/www.mediafire.com\/file\/1c8qfqbs662x22j\/shape_predictor_68_face_landmarks.dat\/file\" target=\"_blank\">t\u1ea1i \u0111\u00e2y<\/a><\/strong>&nbsp;v\u00e0 copy v\u00e0o th\u01b0 m\u1ee5c ch\u1ee9a m\u00e3 ngu\u1ed3n (c\u00f3 file mask_detection.py \u0111\u1ea5y).<\/p>\n\n\n\n<p>That&#8217;s all, b\u00e2y gi\u1edd nghi\u00ean c\u1ee9u m\u00e3 ngu\u1ed3n v\u00e0 ch\u1ea1y th\u1eed th\u00f4i!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u1ea7n 3 &#8211;  Ch\u1ea1y th\u1eed ch\u01b0\u01a1ng tr\u00ecnh ph\u00e1t hi\u1ec7n \u0111eo kh\u1ea9u trang<\/h2>\n\n\n\n<script async=\"\" src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<!-- InPost_Ad -->\n<ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-5095883280136027\" data-ad-slot=\"7735063137\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<p>B\u00e2y gi\u1edd c\u00e1c b\u1ea1n m\u1edf file mask_detection.py s\u1ebd th\u1ea5y m\u00e3 ngu\u1ed3n c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh kh\u00e1 \u0111\u01a1n gi\u1ea3n. T\u00e1c v\u1ee5 c\u1ee7a file n\u00e0y s\u1ebd l\u00e0 \u0111\u1ecdc \u1ea3nh t\u1eeb webcam, detect khu\u00f4n m\u1eb7t, capture v\u00f9ng mi\u1ec7ng v\u00e0 t\u00ednh to\u00e1n color saturation \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem c\u00f3 \u0111eo kh\u1ea9u trang hay kh\u00f4ng.<\/p>\n\n\n\n<p>C\u00e1ch t\u00ednh color sat c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">hsv = cv2.cvtColor(frame[int(boundRect[1]):int(boundRect[1] + boundRect[3]),int(boundRect[0]):int(boundRect[0] + boundRect[2])], cv2.COLOR_RGB2HSV)<br>sum_saturation = np.sum(hsv[:, :, 1])  # Sum the brightness values<br>area = int(boundRect[2])*int(boundRect[3])<br>avg_saturation = sum_saturation \/ area  # Find the average<\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>\u0110\u1ea7u ti\u00ean ta chuy\u1ec3n \u1ea3nh v\u00f9ng mi\u1ec7ng v\u1ec1 HSV v\u00e0 l\u1ea5y ri\u00eang k\u00eanh Saturation \u0111\u1ec3 t\u00ednh to\u00e1n.<\/li><li>Ti\u1ebfp theo ta t\u00ednh trung b\u00ecnh c\u1ed9ng saturation c\u1ee7a v\u00f9ng mi\u1ec7ng.<\/li><li>Ta so s\u00e1ng gi\u00e1 tr\u1ecb trung b\u00ecnh \u0111\u00f3 v\u1edbi 1 threshold do ta \u0111\u1eb7t, m\u00ecnh ch\u1ecdn l\u00e0 100. N\u1ebfu gi\u00e1 tr\u1ecb &lt;100 l\u00e0 c\u00f3 deo kh\u1ea9u trang (m\u00e0u tr\u1eafng nhi\u1ec1u) v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/li><\/ul>\n\n\n\n<script async=\"\" src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<!-- InPost_Ad -->\n<ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-5095883280136027\" data-ad-slot=\"7735063137\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<p>V\u1eady th\u00f4i, gi\u1edd b\u1ea1n ch\u1ea1y file mask_detection.py v\u00e0 sau \u0111\u00f3 th\u1eed \u0111eo v\u00e0 th\u00e1o kh\u1ea9u trang ra xem h\u1ec7 th\u1ed1ng nh\u1eadn di\u1ec7n c\u00f3 chu\u1ea9n kh\u00f4ng nh\u00e9. \u0110\u00e2y l\u00e0 video demo c\u1ee7a m\u00ecnh:<\/p>\n\n\n\n<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }<\/style><div class=\"embed-container\"><iframe src=\"https:\/\/www.youtube.com\/embed\/\/D4E-F4TpYns\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe><\/div>\n\n\n\n<p>Xin ch\u00e0o v\u00e0 h\u1eb9n g\u1eb7p l\u1ea1i trong c\u00e1c b\u00e0i ti\u1ebfp theo.<\/p>\n\n\n\n<p>Ch\u00fac c\u00e1c b\u1ea1n th\u00e0nh c\u00f4ng!<\/p>\n\n\n\n<p><strong><em>H\u00e3y join c\u00f9ng c\u1ed9ng \u0111\u1ed3ng M\u00ec AI nh\u00e9!<\/em><\/strong><\/p>\n\n\n\n<p>Fanpage:&nbsp;<a rel=\"noreferrer noopener\" href=\"http:\/\/facebook.com\/miaiblog\" target=\"_blank\">http:\/\/facebook.com\/miaiblog<\/a><br>Group trao \u0111\u1ed5i, chia s\u1ebb:&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/www.facebook.com\/groups\/miaigroup\" target=\"_blank\">https:\/\/www.facebook.com\/groups\/miaigroup<\/a><br>Website:&nbsp;<a href=\"https:\/\/miai.vn\/\">https:\/\/miai.vn\/<\/a><br>Youtube:&nbsp;<a rel=\"noreferrer noopener\" href=\"http:\/\/bit.ly\/miaiyoutube\" target=\"_blank\">http:\/\/bit.ly\/miaiyoutube<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u00ecnh h\u00ecnh l\u00e0 m\u00f9a d\u1ecbch COVID 19 qu\u00e1 c\u0103ng th\u1eb3ng n\u00ean h\u00f4m nay m\u00ecnh xin gi\u1edbi thi\u1ec7u c\u00f9ng c\u00e1c b\u1ea1n c\u00e1ch x\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n \u0111eo kh\u1ea9u trang v\u00e0 nh\u1eafc nh\u1edf n\u1ebfu kh\u00f4ng \u0111eo b\u1eb1ng OpenCV nh\u00e9. H\u1ec7 th\u1ed1ng c\u1ee7a ch\u00fang ta s\u1ebd gi\u00e1m s\u00e1t qu\u00e1 camera, ki\u1ec3m tra xem ng\u01b0\u1eddi d\u00f9ng [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[207,208,209,210,211,212,213,214],"class_list":["post-738","post","type-post","status-publish","format-standard","hentry","category-computer-vision","tag-corona","tag-covid-19","tag-deo-khau-trang","tag-face-mask","tag-face-mask-detection","tag-khau-trang","tag-ncovy","tag-nhan-biet-khau-trang"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>L\u00e0m th\u1eed h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n \u0111eo kh\u1ea9u trang b\u1eb1ng OpenCV - M\u00ec AI<\/title>\n<meta name=\"description\" content=\"H\u00f4m nay m\u00ecnh xin gi\u1edbi thi\u1ec7u c\u00f9ng c\u00e1c b\u1ea1n c\u00e1ch x\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n \u0111eo kh\u1ea9u trang v\u00e0 nh\u1eafc nh\u1edf n\u1ebfu kh\u00f4ng \u0111eo b\u1eb1ng OpenCV nh\u00e9.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/miai.vn\/?p=738\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u00e0m th\u1eed h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n \u0111eo kh\u1ea9u trang b\u1eb1ng OpenCV - 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