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Azure プログラミング

VB.netでMicrosoft Cognitive ServicesのOCR API を使ってみました。

投稿日:

さわってわかるクラウドAI Microsoft Cognitive Services実践ガイド」という本を購入しました。

Google ChromeにPostmanという拡張機能をインストールすることで、好きなデータをPOSTできるというような事が書いてあり、その例として、Microsoft Cognitive ServicesのOCR API を使っていました。

スポンサーリンク

結局、HTTPリクエストを送ることができれば良いので、VB.netでコードを書いてみて、試しました。

今回は、ローカルの画像ファイルを参照しているので、
ContentType を「application/octet-stream」として、画像をバイナリデータとして読み込み渡しています。

URLを指定する場合は、ContentType を「application/json」とします。
データは、{"url":"<画像のURL>"} というようにJSON形式にします。

Computer Vision APIに関しては、こちらを参考にしてください。
VB.netでComputer Vision APIを使ってみました。

次の画像で試してみました。

結果は以下です。
どの程度正しいのかよくわかりませんが、なんとなく、本の表紙と同じ文字が表示されているのがわかります。
レスポンスを解析して、再配置するプログラムを書けば、どの程度正しいのかわかるのですが、今回はやめておきます。

{"language":"ja","textAngle":0.0,"orientation":"Up","regions":[{"boundingBox":"344,1128,2392,3555","lines":[{"boundingBox":"504,1128,808,528","words":[{"boundingBox":"504,1128,808,528","text":"THE"}]},{"boundingBox":"1576,1256,1136,280","words":[{"boundingBox":"1576,1256,296,280","text":"僕"},{"boundingBox":"1912,1272,240,240","text":"た"},{"boundingBox":"2184,1272,224,248","text":"ち"},{"boundingBox":"2464,1312,248,200","text":"の"}]},{"boundingBox":"1384,1560,1352,280","words":[{"boundingBox":"1384,1560,392,272","text":"20"},{"boundingBox":"1800,1560,288,280","text":"年"},{"boundingBox":"2104,1560,296,280","text":"戦"},{"boundingBox":"2432,1560,304,280","text":"略"}]},{"boundingBox":"344,2232,1168,544","words":[{"boundingBox":"344,2232,264,528","text":"」"},{"boundingBox":"648,2240,864,536","text":"OBS"}]},{"boundingBox":"456,1664,1104,552","words":[{"boundingBox":"456,1664,856,544","text":"END"},{"boundingBox":"1392,1864,168,352","text":"0"}]},{"boundingBox":"400,2960,672,304","words":[{"boundingBox":"400,2960,312,296","text":"新"},{"boundingBox":"768,2968,304,296","text":"働"}]},{"boundingBox":"384,3280,648,312","words":[{"boundingBox":"384,3280,304,312","text":"常"},{"boundingBox":"784,3296,248,280","text":"き"}]},{"boundingBox":"2155,4407,35,89","words":[{"boundingBox":"2155,4407,35,43","text":"日"},{"boundingBox":"2155,4451,35,45","text":"■"}]},{"boundingBox":"1418,1149,1281,83","words":[{"boundingBox":"1418,1149,177,80","text":"Money."},{"boundingBox":"1609,1152,219,80","text":"Meaning"},{"boundingBox":"1848,1154,94,62","text":"and"},{"boundingBox":"1958,1156,226,61","text":"Freedom"},{"boundingBox":"2203,1157,294,62","text":"Withoutthe"},{"boundingBox":"2518,1161,58,60","text":"9-"},{"boundingBox":"2584,1168,47,55","text":"to"},{"boundingBox":"2637,1166,62,58","text":"-5"}]},{"boundingBox":"2233,1904,490,40","words":[{"boundingBox":"2233,1905,36,37","text":"ジ"},{"boundingBox":"2280,1919,10,9","text":"・"},{"boundingBox":"2301,1909,36,28","text":"エ"},{"boundingBox":"2345,1909,34,30","text":"ン"},{"boundingBox":"2391,1905,27,35","text":"ド"},{"boundingBox":"2429,1919,11,9","text":"・"},{"boundingBox":"2452,1907,34,34","text":"オ"},{"boundingBox":"2495,1904,36,37","text":"ブ"},{"boundingBox":"2540,1920,11,9","text":"・"},{"boundingBox":"2565,1906,36,37","text":"ジ"},{"boundingBox":"2608,1920,26,23","text":"ョ"},{"boundingBox":"2643,1906,37,38","text":"ブ"},{"boundingBox":"2682,1909,41,34","text":"ズ"}]},{"boundingBox":"2067,2008,656,64","words":[{"boundingBox":"2067,2013,58,54","text":"テ"},{"boundingBox":"2134,2010,50,57","text":"イ"},{"boundingBox":"2193,2011,54,55","text":"ラ"},{"boundingBox":"2257,2033,55,9","text":"ー"},{"boundingBox":"2333,2031,16,14","text":"・"},{"boundingBox":"2372,2008,57,56","text":"ピ"},{"boundingBox":"2435,2014,60,49","text":"ア"},{"boundingBox":"2505,2015,53,49","text":"ソ"},{"boundingBox":"2570,2014,54,50","text":"ン"},{"boundingBox":"2656,2011,67,61","text":"著"}]},{"boundingBox":"2462,2089,263,53","words":[{"boundingBox":"2462,2089,53,48","text":"児"},{"boundingBox":"2519,2090,52,48","text":"島"},{"boundingBox":"2591,2091,55,48","text":"修"},{"boundingBox":"2672,2093,53,49","text":"訳"}]},{"boundingBox":"1718,3002,79,473","words":[{"boundingBox":"1723,3002,70,70","text":"人"},{"boundingBox":"1721,3081,76,73","text":"類"},{"boundingBox":"1720,3163,73,72","text":"史"},{"boundingBox":"1718,3244,74,72","text":"上"},{"boundingBox":"1718,3326,73,75","text":"初"},{"boundingBox":"1721,3414,64,61","text":"の"}]},{"boundingBox":"1617,2998,78,557","words":[{"boundingBox":"1622,2998,72,72","text":"革"},{"boundingBox":"1622,3078,73,73","text":"命"},{"boundingBox":"1624,3160,64,67","text":"を"},{"boundingBox":"1628,3241,54,71","text":"目"},{"boundingBox":"1617,3321,72,75","text":"撃"},{"boundingBox":"1628,3406,55,67","text":"し"},{"boundingBox":"1618,3485,63,70","text":"た"}]},{"boundingBox":"1516,2995,79,472","words":[{"boundingBox":"1521,2995,74,73","text":"著"},{"boundingBox":"1520,3076,73,72","text":"者"},{"boundingBox":"1522,3156,67,67","text":"が"},{"boundingBox":"1520,3236,69,71","text":"明"},{"boundingBox":"1518,3317,67,66","text":"か"},{"boundingBox":"1516,3397,68,70","text":"す"}]},{"boundingBox":"507,4303,556,84","words":[{"boundingBox":"507,4303,66,70","text":"世"},{"boundingBox":"578,4305,65,71","text":"界"},{"boundingBox":"649,4313,38,61","text":"8"},{"boundingBox":"692,4312,60,62","text":"か"},{"boundingBox":"760,4311,67,70","text":"国"},{"boundingBox":"836,4316,55,64","text":"で"},{"boundingBox":"897,4315,66,69","text":"翻"},{"boundingBox":"971,4317,64,70","text":"訳"},{"boundingBox":"1049,4322,14,64","text":"!"}]},{"boundingBox":"432,4396,703,92","words":[{"boundingBox":"432,4396,74,71","text":"午"},{"boundingBox":"506,4423,42,44","text":"0"},{"boundingBox":"551,4409,62,62","text":"市"},{"boundingBox":"617,4426,72,46","text":"es"},{"boundingBox":"692,4406,27,76","text":"』"},{"boundingBox":"735,4409,67,70","text":"誌"},{"boundingBox":"807,4415,68,62","text":"が"},{"boundingBox":"877,4413,65,72","text":"絶"},{"boundingBox":"951,4415,64,73","text":"賛"},{"boundingBox":"1026,4419,45,67","text":"し"},{"boundingBox":"1078,4421,57,67","text":"た"}]},{"boundingBox":"498,4499,547,85","words":[{"boundingBox":"498,4499,72,72","text":"若"},{"boundingBox":"572,4502,68,71","text":"手"},{"boundingBox":"643,4505,70,69","text":"起"},{"boundingBox":"721,4508,65,70","text":"業"},{"boundingBox":"793,4511,65,71","text":"家"},{"boundingBox":"869,4516,57,62","text":"に"},{"boundingBox":"934,4517,53,65","text":"よ"},{"boundingBox":"995,4522,50,62","text":"る"}]},{"boundingBox":"627,4601,282,82","words":[{"boundingBox":"627,4601,67,74","text":"衝"},{"boundingBox":"700,4606,67,72","text":"撃"},{"boundingBox":"774,4616,62,62","text":"の"},{"boundingBox":"844,4613,65,70","text":"書"}]}]}]}

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