{"id":126,"date":"2023-11-26T13:21:24","date_gmt":"2023-11-26T04:21:24","guid":{"rendered":"https:\/\/www.aisoit.com\/?p=126"},"modified":"2023-11-26T13:32:54","modified_gmt":"2023-11-26T04:32:54","slug":"crop-and-resize-image-with-python","status":"publish","type":"post","link":"https:\/\/www.aisoit.com\/?p=126","title":{"rendered":"QR code with image"},"content":{"rendered":"\n

Python\u306eQR\u30b3\u30fc\u30c9\u753b\u50cf\u751f\u6210\u30e9\u30a4\u30d6\u30e9\u30ea\u300cqrcode\u300d<\/p>\n\n\n\n

<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
pip<\/span> <\/span>install<\/span> <\/span>qrcode<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
QR\u30b3\u30fc\u30c9\u306e\u4e2d\u306b\u753b\u50cf\u3092\u57cb\u3081\u8fbc\u3080<\/p>\n\n\n\n
    \n
  1.  download lena.png<\/li>\n\n\n\n
  2. create QR code with string: “I am Lena” <\/li>\n\n\n\n
  3. add mini image overlay of QR code.<\/li>\n\n\n\n
  4. save to new image:  qr_lena2.png<\/li>\n<\/ol>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    <\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
    #!\/usr\/bin\/env python<\/span><\/span>\n# -*- coding: utf-8 -*-<\/span><\/span>\n# ref: https:\/\/note.nkmk.me\/python-pillow-qrcode\/<\/span><\/span>\n# pip install qrcode<\/span><\/span>\n# wget http:\/\/optipng.sourceforge.net\/pngtech\/img\/lena.png<\/span><\/span>\nimport<\/span> qrcode<\/span><\/span>\nfrom<\/span> PIL <\/span>import<\/span> Image<\/span><\/span>\nimport<\/span> requests<\/span><\/span>\nimport<\/span> os<\/span><\/span>\n<\/span>\n<\/span>\ndef<\/span> <\/span>dw_img<\/span>(<\/span>fimg<\/span>=<\/span>'<\/span>lena.png<\/span>'<\/span>,<\/span> <\/span>img_url<\/span>=None<\/span>):<\/span><\/span>\n    <\/span>print<\/span>(<\/span>"<\/span>download image:<\/span>"<\/span>,<\/span> fimg<\/span>)<\/span><\/span>\n    <\/span>if<\/span> img_url <\/span>is<\/span> <\/span>None<\/span>:<\/span><\/span>\n        image_url <\/span>=<\/span> <\/span>'<\/span>http:\/\/optipng.sourceforge.net\/pngtech\/img\/lena.png<\/span>'<\/span><\/span>\n    img_data <\/span>=<\/span> requests<\/span>.<\/span>get<\/span>(<\/span>image_url<\/span>).<\/span>content<\/span><\/span>\n    <\/span>with<\/span> <\/span>open<\/span>(<\/span>fimg<\/span>,<\/span> <\/span>'<\/span>wb<\/span>'<\/span>)<\/span> <\/span>as<\/span> handler<\/span>:<\/span><\/span>\n        handler<\/span>.<\/span>write<\/span>(<\/span>img_data<\/span>)<\/span><\/span>\n<\/span>\n<\/span>\n# ----------draw image overlay------------------------------------------------------<\/span><\/span>\nfimg <\/span>=<\/span> <\/span>"<\/span>lena.png<\/span>"<\/span><\/span>\nif<\/span> <\/span>not<\/span> os<\/span>.<\/span>path<\/span>.<\/span>exists<\/span>(<\/span>fimg<\/span>):<\/span><\/span>\n    <\/span>print<\/span>(<\/span>"<\/span>down load file:<\/span>"<\/span>,<\/span> fimg<\/span>)<\/span><\/span>\n    <\/span>dw_img<\/span>()<\/span><\/span>\n<\/span>\n# face image for overlay<\/span><\/span>\nimg <\/span>=<\/span> Image<\/span>.<\/span>open<\/span>(<\/span>'<\/span>lena.png<\/span>'<\/span>)<\/span><\/span>\nface <\/span>=<\/span> img<\/span>.<\/span>crop<\/span>((<\/span>218<\/span>,<\/span> <\/span>219<\/span>,<\/span> <\/span>373<\/span>,<\/span> <\/span>374<\/span>)).<\/span>resize<\/span>((<\/span>60<\/span>,<\/span> <\/span>60<\/span>),<\/span> Image<\/span>.<\/span>LANCZOS<\/span>)<\/span><\/span>\n<\/span>\nqr_big <\/span>=<\/span> qrcode<\/span>.<\/span>QRCode<\/span>(<\/span><\/span>\n    <\/span>error_correction<\/span>=<\/span>qrcode<\/span>.<\/span>constants<\/span>.<\/span>ERROR_CORRECT_H<\/span><\/span>\n)<\/span><\/span>\nqr_big<\/span>.<\/span>add_data<\/span>(<\/span>'<\/span>I am Lena<\/span>'<\/span>)<\/span><\/span>\nqr_big<\/span>.<\/span>make<\/span>()<\/span><\/span>\n# convert qr code to RGB image.<\/span><\/span>\nimg_qr_big <\/span>=<\/span> qr_big<\/span>.<\/span>make_image<\/span>().<\/span>convert<\/span>(<\/span>'<\/span>RGB<\/span>'<\/span>)<\/span><\/span>\n<\/span>\npos <\/span>=<\/span> <\/span>((<\/span>img_qr_big<\/span>.<\/span>size<\/span>[<\/span>0<\/span>]<\/span> <\/span>-<\/span> face<\/span>.<\/span>size<\/span>[<\/span>0<\/span>])<\/span> <\/span>\/\/<\/span> <\/span>2<\/span>,<\/span><\/span>\n       <\/span>(<\/span>img_qr_big<\/span>.<\/span>size<\/span>[<\/span>1<\/span>]<\/span> <\/span>-<\/span> face<\/span>.<\/span>size<\/span>[<\/span>1<\/span>])<\/span> <\/span>\/\/<\/span> <\/span>2<\/span>)<\/span><\/span>\n<\/span>\nimg_qr_big<\/span>.<\/span>paste<\/span>(<\/span>face<\/span>,<\/span> pos<\/span>)<\/span><\/span>\nimg_qr_big<\/span>.<\/span>save<\/span>(<\/span>'<\/span>qr_lena2.png<\/span>'<\/span>)<\/span><\/span>\n<\/span><\/code><\/pre><\/div>\n
    <\/span><\/div>","protected":false},"excerpt":{"rendered":"
    Python\u306eQR\u30b3\u30fc\u30c9\u753b\u50cf\u751f\u6210\u30e9\u30a4\u30d6\u30e9\u30ea\u300cqrcode\u300d QR\u30b3\u30fc\u30c9\u306e\u4e2d\u306b\u753b\u50cf\u3092\u57cb\u3081\u8fbc\u3080<\/p>\n
    <\/span><\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-126","post","type-post","status-publish","format-standard","hentry","category-tech"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.aisoit.com\/index.php?rest_route=\/wp\/v2\/posts\/126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aisoit.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aisoit.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aisoit.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aisoit.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=126"}],"version-history":[{"count":5,"href":"https:\/\/www.aisoit.com\/index.php?rest_route=\/wp\/v2\/posts\/126\/revisions"}],"predecessor-version":[{"id":134,"href":"https:\/\/www.aisoit.com\/index.php?rest_route=\/wp\/v2\/posts\/126\/revisions\/134"}],"wp:attachment":[{"href":"https:\/\/www.aisoit.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aisoit.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aisoit.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}