{"id":45685,"date":"2023-11-11T16:17:21","date_gmt":"2023-07-19T14:33:40","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45685-2\/"},"modified":"2024-05-04T08:31:52","modified_gmt":"2024-05-04T00:31:52","slug":"45685-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45685-2\/","title":{"rendered":""},"content":{"rendered":"<p>Rust \u304b\u3089 Tesseract OCR\uff08\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\uff09\u3092\u547c\u3073\u51fa\u305d\u3046\u3068\u8272\u3005\u3084\u3063\u3066\u3044\u307e\u3057\u305f\u3002<br \/>\n\u3072\u3068\u307e\u305a\u52d5\u304f\u3088\u3046\u306b\u306a\u3063\u305f\u306e\u3067\u5099\u5fd8\u9332\u3068\u3057\u3066\u3042\u3052\u3066\u304a\u304d\u307e\u3059\u3002<br \/>\nvcpkg \u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f DLL \u3092 Rust \u3067\u4f7f\u3046\u3001\u3068\u3044\u3046\u5834\u5408\u306b\u3082\u4f7f\u3048\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2>vcpkg \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b<\/h2>\n<p>GitHub\u306e\u8aac\u660e\u306b\u5247\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<br \/>\nhttps:\/\/github.com\/microsoft\/vcpkg<\/p>\n<h2>Tesseract OCR\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b<\/h2>\n<p>\u4ee5\u4e0b\u30b3\u30de\u30f3\u30c9\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<br \/>\n\u30a2\u30cb\u30e1\u4e00\u672c\u5206\u304f\u3089\u3044\u306f\u6642\u9593\u304b\u304b\u308a\u307e\u3059\u3002<br \/>\n.\/vcpkg install tesseract:x64-windows<\/p>\n<p>\u4f9d\u5b58\u95a2\u4fc2\u306e\u3042\u308b\u30d1\u30c3\u30b1\u30fc\u30b8\u3082\u4e00\u7dd2\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304f\u308c\u307e\u3059\u304c\u3001\u8db3\u308a\u306a\u3044\u5834\u5408\u306f\u4ee5\u4e0b\u3092\u5b9f\u884c\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>.\/vcpkg install leptonica:x64-windows<\/p>\n<h2>Rust \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u8aad\u307f\u8fbc\u3080<\/h2>\n<p>tesseract \u30af\u30ec\u30fc\u30c8\u3092\u5229\u7528\u3057\u307e\u3057\u305f\u3002<br \/>\nhttps:\/\/crates.io\/crates\/tesseract<\/p>\n<p>Cargo.toml \u306b\u4ee5\u4e0b\u3092\u8ffd\u8a18\u3057\u3066\u30d3\u30eb\u30c9\u3057\u307e\u3059\u3002<br \/>\ntesseract = &#8220;0.12.0&#8221;<\/p>\n<p>main.rs \u306f\u6700\u4f4e\u9650\u306e\u8a18\u8ff0\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">let<\/span> <span class=\"n\">text<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">tesseract<\/span><span class=\"p\">::<\/span><span class=\"nf\">ocr<\/span><span class=\"p\">(<\/span><span class=\"s\">\"test.png\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"jpn\"<\/span><span class=\"p\">)<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Tesseract: {}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">text<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<h2>lib \u3092\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30eb\u30fc\u30c8\u306b\u8a2d\u7f6e\u3059\u308b<\/h2>\n<p>vcpkg \u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f .lib \u30d5\u30a1\u30a4\u30eb\u3092 Rust \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30eb\u30fc\u30c8\u30d5\u30a9\u30eb\u30c0\u306b\u914d\u7f6e\u3057\u307e\u3059\u3002<br \/>\nlib \u30d5\u30a1\u30a4\u30eb\u306f vcpkg\\installed\\x64-windows\\lib \u4ee5\u4e0b\u306b\u3042\u308a\u307e\u3059\u3002<br \/>\ntesseract \u306e\u30d3\u30eb\u30c9\u306b\u5fc5\u8981\u306a\u30d5\u30a1\u30a4\u30eb\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">leptonica-1.82.0.lib<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">libcrypto.lib<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">libcurl.lib<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">tesseract52.lib<\/ul>\n<p>\u8a2d\u7f6e\u3057\u305f\u3089\u30d3\u30eb\u30c9\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>&gt; cargo build<\/p>\n<p>\u30a8\u30e9\u30fc\u304c\u51fa\u306a\u3051\u308c\u3070\u3072\u3068\u307e\u305aOK\u3067\u3059\u3002<br \/>\n\u305f\u3060\u3057\u3001\u30d3\u30eb\u30c9\u306f\u901a\u3063\u3066\u3082 cargo run \u3059\u308b\u3068 DLL \u304c\u8db3\u3089\u306a\u3044\u3068\u6012\u3089\u308c\u307e\u3059\u3002<br \/>\nerror: process didn&#8217;t exit successfully: target\\debug\\tesseract_rust.exe (exit code: 0xc0000135, STATUS_DLL_NOT_FOUND)<\/p>\n<h2>\u5b9f\u884c\u306b\u5fc5\u8981\u306a DLL \u3092\u8a2d\u7f6e\u3059\u308b<\/h2>\n<p>DLL \u306f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30eb\u30fc\u30c8\u3067\u306f\u306a\u304f\u3001exe \u3068\u540c\u3058\u30d1\u30b9\u306b\u8a2d\u7f6e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\ntarget\\debug\\ \u4ee5\u4e0b\u306b DLL \u3092\u8a2d\u7f6e\u3057\u307e\u3059\u3002<\/p>\n<p>lib \u30d5\u30a1\u30a4\u30eb\u3068\u306f\u9055\u3044\u3001\u95a2\u9023\u3059\u308b DLL \u304c\u5168\u3066\u5fc5\u8981\u3067\u3059\u3002<br \/>\nvcpkg\\installed\\x64-windows\\tools\\tesseract\\ \u4ee5\u4e0b\u306b\u3042\u308b DLL \u3092\u5168\u3066 target\\debug\\ \u4ee5\u4e0b\u306b\u30b3\u30d4\u30fc\u3057\u307e\u3059\u3002<\/p>\n<p>\u52d5\u304b\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>&gt; cargo run<\/p>\n<p>\u8a00\u8a9e\u30d5\u30a1\u30a4\u30eb\u304c\u7121\u3044\u3068\u8a00\u308f\u308c\u307e\u3059\u3002<br \/>\nGitHub \u304b\u3089 jpn.traineddata \u3092 DL \u3057\u3066\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30eb\u30fc\u30c8\u30d5\u30a9\u30eb\u30c0\u306b\u8a2d\u7f6e\u3057\u307e\u3059\u3002<br \/>\nhttps:\/\/github.com\/tesseract-ocr\/tessdata<\/p>\n<p>\u3053\u308c\u3067\u52d5\u4f5c\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<h2>build.rs \u3067\u30d3\u30eb\u30c9\u3092\u81ea\u52d5\u5316\u3059\u308b<\/h2>\n<p>\u30d3\u30eb\u30c9\u3084\u5b9f\u884c\u306e\u5ea6\u306b\u95a2\u9023\u30d5\u30a1\u30a4\u30eb\u3092\u8a2d\u7f6e\u3059\u308b\u306e\u306f\u9762\u5012\u306a\u306e\u3067\u3001build.rs \u3092\u66f8\u3044\u3066\u81ea\u52d5\u5316\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">project_dir<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">env<\/span><span class=\"p\">::<\/span><span class=\"nf\">var<\/span><span class=\"p\">(<\/span><span class=\"s\">\"CARGO_MANIFEST_DIR\"<\/span><span class=\"p\">)<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"cargo:rustc-link-search=native={}<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">lib\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">project_dir<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"k\">let<\/span> <span class=\"n\">target_path<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"nn\">Path<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">project_dir<\/span><span class=\"p\">)<\/span><span class=\"nf\">.join<\/span><span class=\"p\">(<\/span><span class=\"s\">\"target\"<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"n\">target_path<\/span><span class=\"nf\">.exists<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"n\">debug_path<\/span> <span class=\"o\">=<\/span> <span class=\"n\">target_path<\/span><span class=\"nf\">.join<\/span><span class=\"p\">(<\/span><span class=\"s\">\"debug\"<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"n\">release_path<\/span> <span class=\"o\">=<\/span> <span class=\"n\">target_path<\/span><span class=\"nf\">.join<\/span><span class=\"p\">(<\/span><span class=\"s\">\"release\"<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"n\">dll_files<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">fs<\/span><span class=\"p\">::<\/span><span class=\"nf\">read_dir<\/span><span class=\"p\">(<\/span><span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"nn\">Path<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"p\">(<\/span><span class=\"n\">project_dir<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">dll\"<\/span><span class=\"p\">)))<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">()<\/span>\r\n            <span class=\"nf\">.map<\/span><span class=\"p\">(|<\/span><span class=\"n\">res<\/span><span class=\"p\">|<\/span> <span class=\"n\">res<\/span><span class=\"nf\">.map<\/span><span class=\"p\">(|<\/span><span class=\"n\">e<\/span><span class=\"p\">|<\/span> <span class=\"n\">e<\/span><span class=\"nf\">.path<\/span><span class=\"p\">()))<\/span>\r\n            <span class=\"py\">.collect<\/span><span class=\"p\">::<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">_<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"n\">Error<\/span><span class=\"o\">&gt;&gt;<\/span><span class=\"p\">()<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n        \r\n        <span class=\"k\">for<\/span> <span class=\"n\">path<\/span> <span class=\"k\">in<\/span> <span class=\"n\">dll_files<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">if<\/span> <span class=\"n\">debug_path<\/span><span class=\"nf\">.exists<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">fs<\/span><span class=\"p\">::<\/span><span class=\"nf\">copy<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">path<\/span><span class=\"p\">,<\/span> <span class=\"n\">debug_path<\/span><span class=\"nf\">.join<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">path<\/span><span class=\"nf\">.file_name<\/span><span class=\"p\">()<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">()))<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n            <span class=\"p\">}<\/span>\r\n            <span class=\"k\">if<\/span> <span class=\"n\">release_path<\/span><span class=\"nf\">.exists<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">fs<\/span><span class=\"p\">::<\/span><span class=\"nf\">copy<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">path<\/span><span class=\"p\">,<\/span> <span class=\"n\">release_path<\/span><span class=\"nf\">.join<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">path<\/span><span class=\"nf\">.file_name<\/span><span class=\"p\">()<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">()))<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n            <span class=\"p\">}<\/span>\r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4eca\u56de\u306f cargo:rustc-link-search=native= \u3092\u6307\u5b9a\u3057\u3066\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30eb\u30fc\u30c8\u4ee5\u4e0b\u306e lib \u30d5\u30a9\u30eb\u30c0\u3092\u53c2\u7167\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\nvcpkg\\installed\\x64-windows\\lib \u3092\u30d5\u30eb\u30d1\u30b9\u3067\u6307\u5b9a\u3057\u3066\u3082\u554f\u984c\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u66f4\u306b\u3001target\u30d5\u30a9\u30eb\u30c0\u304c\u3042\u308b\u5834\u5408\u306b dll \u30d5\u30a9\u30eb\u30c0\u4ee5\u4e0b\u306e DLL \u30d5\u30a1\u30a4\u30eb\u3092\u5168\u3066 debug\u3001release \u30d5\u30a9\u30eb\u30c0\u306b\u30b3\u30d4\u30fc\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3053\u3061\u3089\u3082\u3001DLL\u30d5\u30a9\u30eb\u30c0\u306f\u30d5\u30eb\u30d1\u30b9\u3067 vcpkd \u4ee5\u4e0b\u3092\u6307\u5b9a\u3057\u3066\u3082\u3044\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>GitHub \u306b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u5fc5\u8981\u306a\u65b9\u306f\u3069\u3046\u305e\u3002<br \/>\nhttps:\/\/github.com\/sou1ka\/tesseract_rust<\/p>\n<p>Rust\u306e\u30d3\u30eb\u30c9\u6642\u306bC++\u306e\u30bd\u30fc\u30b9\u3082\u4e00\u7dd2\u306b\u30d3\u30eb\u30c9\u3057\u3066FFI\u3059\u308b\u65b9\u6cd5\u3082\u3067\u304d\u308b\u3068\u306f\u601d\u3044\u307e\u3059\u304c\u3001Tesseract \u306e\u69cb\u6210\u304c\u4e2d\u3005\u91cd\u305f\u3044\u306e\u3067\u4eca\u56de\u306fvcpkg\u7d4c\u7531\u3067\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<h2>\u53c2\u8003<\/h2>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rust \u304b\u3089 Tesseract OCR\uff08\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\uff09\u3092\u547c\u3073\u51fa\u305d\u3046\u3068\u8272\u3005\u3084\u3063\u3066\u3044\u307e\u3057\u305f\u3002 \u3072\u3068\u307e\u305a\u52d5\u304f\u3088\u3046 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45685","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45685-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"Rust \u304b\u3089 Tesseract 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