最近のアクセス：
OCR プロシージャー

画像からテキストを抽出します。頭字語 OCR は 'Optical Character Recognition' (光学式文字認識) を意味します。

パラメーター

設定

次の表に、この AI タスクを使用する際に設定する必要があるプロパティ (アクセスに必要な資格情報) を示します。
PropertyKey
ProviderType
Id Key SecretKey
Alibaba - 用户AccessKey 用户AccessKey
Amazon - Rekognition Rekognition
Baidu 视觉技术 视觉技术 视觉技术
Google - Cloud Vision API -
IBM - Visual Recognition
（非推奨、ダークベータ）		 -
Microsoft - Computer Vision -
MLKit ML Kit API ML Kit API -
SAP - Sandbox Environment
（非推奨）		 -
Tencent 通用OCR 通用OCR -

例

下記の表に、次の画像を入力とした場合に行われるテキスト認識 (JSON 構造として) とその処理の所要時間をプロバイダー別に示します。
イメージ:40295.png

プロバイダー 出力 ベンチマーク
Alibaba 
 [ { "label": "LevI'S", "confidence": 0.999, "top": 651, "left": 424, "width": 128, "height": 40 } ]
イメージ:43238.png
 3156ms
Amazon 
 [ { "label": "LEVI'S", "confidence": 0.977, "top": 668, "left": 428, "width": 127, "height": 31 } ]
イメージ:41970.png
 13531ms
Baidu 
 [ { "label": "evIs", "confidence": 1, "top": 664, "left": 453, "width": 108, "height": 30, "Info":  [ { "property": "finegrained_vertexes_location",
			"value": " [ {\"x\":453,\"y\":664},{\"x\":476,\"y\":664},
				 ...,{\"x\":453,\"y\":669} ] " // 16 points
	}, {
		"property": "min_finegrained_vertexes_location",
			"value": " [ {\"x\":453,\"y\":664},{\"x\":559,\"y\":664},
				 {\"x\":559,\"y\":692},{\"x\":453,\"y\":692} ] "
	} ] 
} ]
イメージ:42625.png
 4335ms
Google 
 [ { "label": "Levi'S", "confidence": 1, "top": 821, "left": 535, "width": 139, "height": 40, "Info":  [ { "property": "Language",
        "value": "en"
        }
     ] 
} ]
イメージ:41107.png
 8305ms
IBM 
 [ { "label": "vrs",
    "confidence": 0.697, "top": 241, "left": 153, "width": 8, "height": 25, "Info":  [ { "property": "line_number",
        "value": "#0.00000" }  ]  }, { "label": "le",
    "confidence": 0.668, "top": 247, "left": 162, "width": 35, "height": 14, "Info":  [ { "property": "line_number",
        "value": "0.00000"
	} ] 
} ]
イメージ:40296.png
 9251ms
Microsoft 
 [ { "label": "Levrs",
    "confidence": 0.0, "top": 823, "left": 538, "width": 147, "height": 36, "Info":  [ { "property": "Angle",
            "value": "0.00000"
	}, {
		"property": "Language",
        "value": "tr"
    }, {
        "property": "Orientation",
            "value": "Up" } ]  } ]
イメージ:40297.png
 8496ms
MLKit 
 [ { "label": "Levrs",
    "confidence": 1, "top": 806, "left": 516, "width": 200, "height": 75 } ]
イメージ:40297.png
 978ms
SAP 
 [ { "label": "Levis",
    "confidence": 0.955528974533081, "top": 820, "left": 534, "width": 156, "height": 39 } ]
イメージ:41151.png
 8595ms
Tencent 
 [ { "label": "LeVi's",
    "confidence": 0.795, "top": 668, "left": 436, "width": 121, "height": 28 } ]
イメージ:41971.png
 7582ms

もう 1 つの例として、入力画像にクリーンなテキスト (ノイズが少ないもの) が含まれている場合の例を紹介します。
イメージ:40298.png

プロバイダー 出力 ベンチマーク
Alibaba 
 [ { "label": "GeneXus",
		"confidence": 0.999, "top": 52, "left": 20, "width": 63, "height": 24 }, { "label": "LEGACY", "confidence": 0.999, "top": 70, "left": 355, "width": 107, "height": 25 }, { "label": "MODERNIZATION",
	"confidence": 0.999, "top": 103, "left": 356, "width": 230, "height": 25 }, { "label": "WITH GENEXUSTM15",
	"confidence": 0.999, "top": 138, "left": 357, "width": 204, "height": 22 }, { "label": "DOWNLOAD THE EBOOK!",
	"confidence": 0.999, "top": 228, "left": 378, "width": 149, "height": 14 } ]
イメージ:43239.png
 4171ms
Amazon 
 [ { "label": "LEGACY", "confidence": 0.999, "top": 103, "left": 546, "width": 161, "height": 41 }, { "label": "MODERNIZATION",
	"confidence": 0.999, "top": 158, "left": 550, "width": 340, "height": 38 }, { "label": "WITH", "confidence": 0.999, "top": 211, "left": 546, "width": 86, "height": 31 }, { "label": "15",
	"confidence": 0.998, "top": 211, "left": 821, "width": 42, "height": 35 }, { "label": "EBOOK!",
	"confidence": 0.997, "top": 350, "left": 736, "width": 77, "height": 20 }, { "label": "THE", "confidence": 0.996, "top": 352, "left": 695, "width": 40, "height": 20 }, { "label": "ATES", "confidence": 0.992, "top": 289, "left": 364, "width": 42, "height": 17 }, { "label": "GENEXUSTN",
    "confidence": 0.983, "top": 211, "left": 638, "width": 167, "height": 34 }, { "label": "DOWNLOAD",
	"confidence": 0.973, "top": 350, "left": 580, "width": 113, "height": 20 }, { "label": "illsion",
    "confidence": 0.945, "top": 95, "left": 270, "width": 32, "height": 11 }, { "label": "3LD",
    "confidence": 0.944, "top": 308, "left": 362, "width": 29, "height": 15 }, { "label": "3ut it is!", "confidence": 0.938, "top": 134, "left": 263, "width": 32, "height": 8 }, { "label": "is", "confidence": 0.933, "top": 112, "left": 293, "width": 9, "height": 7 }, { "label": "Genekus:",
    "confidence": 0.872, "top": 92, "left": 28, "width": 101, "height": 24 }, { "label": "'condinve",
    "confidence": 0.863, "top": 121, "left": 261, "width": 38, "height": 10 }, { "label": "ian", "confidence": 0.837, "top": 98, "left": 257, "width": 16, "height": 7 } ]
イメージ:41972.png
 2418ms
Baidu 
 [ { "label": "Genexus",
	"confidence": 1.000, "top": 83, "left": 30, "width": 97, "height": 34, "Info":  [ { "property": "finegrained_vertexes_location",
			"value": " [ {\"x\":30,\"y\":83},{\"x\":56,\"y\":83},
				 ...,{\"x\":30,\"y\":90} ] " // 38 points
	}, {
		"property": "min_finegrained_vertexes_location",
			"value": " [ {\"x\":30,\"y\":83},{\"x\":126,\"y\":83},
				   {\"x\":126,\"y\":116},{\"x\":30,\"y\":116} ] "
	} ] 
}, {
	"label": "uE it is",
	"confidence": 1.000, "top": 134, "left": 267, "width": 45, "height": 11, "Info":  [ { "property": "finegrained_vertexes_location",
			"value": " [ {\"x\":267,\"y\":134},{\"x\":273,\"y\":134},
				 ...,{\"x\":267,\"y\":135} ] " // 38 points
	}, {
		"property": "min_finegrained_vertexes_location",
			"value": " [ {\"x\":267,\"y\":134},{\"x\":311,\"y\":134},
				   {\"x\":311,\"y\":144},{\"x\":267,\"y\":144} ] "
	} ] 
}, {
	"label": "EGACY", "confidence": 1.000, "top": 107, "left": 571, "width": 143, "height": 42, "Info":  [ { "property": "finegrained_vertexes_location",
			"value": " [ {"x":571,"y":107},{"x":602,"y":107},
					   ...,{"x":571,"y":116} ] " // 38 points
		}, {
			"property": "min_finegrained_vertexes_location",
			"value": " [ {\"x\":570,\"y\":107},{\"x\":711,\"y\":107},
			           {\"x\":711,\"y\":147},{\"x\":570,\"y\":147} ] "
		}
	 ] 
}, {
	"label": "MODERNIZATION",
	"confidence": 1.000, "top": 157, "left": 545, "width": 363, "height": 44, "Info":  [ { "property": "finegrained_vertexes_location",
			"value": " [ {\"x\":545,\"y\":157},{\"x\":577,\"y\":157},
				 ...,{\"x\":545,\"y\":168} ] " // 38 points
	}, {
		"property": "min_finegrained_vertexes_location",
			"value": " [ {\"x\":545,\"y\":157},{\"x\":906,\"y\":157},
				   {\"x\":906,\"y\":199},{\"x\":545,\"y\":199} ] "
	} ] 
}, {
	"label": "WITH GENEXUSM 15",
	"confidence": 1.000, "top": 213, "left": 545, "width": 322, "height": 35, "Info":  [ { "property": "finegrained_vertexes_location",
			"value": " [ {\"x\":545,\"y\":213},{\"x\":571,\"y\":213},
				 ...,{\"x\":545,\"y\":220} ] " // 38 points
	}, {
		"property": "min_finegrained_vertexes_location",
			"value": " [ {\"x\":545,\"y\":213},{\"x\":865,\"y\":213},
				   {\"x\":865,\"y\":247},{\"x\":545,\"y\":247} ] "
	} ] 
}, {
	"label": "DOWNLOAD THE EBOOK!",
	"confidence": 1.000, "top": 354, "left": 583, "width": 232, "height": 21, "Info":  [ { "property": "finegrained_vertexes_location",
			"value": " [ {\"x\": 583,\"y\": 354},{\"x\": 598,\"y\": 354},
				  ...,{\"x\": 583,\"y\": 359} ] " // 38 points
	}, {
		"property": "min_finegrained_vertexes_location",
			"value":  [ {\"x\":582,\"y\":353},{\"x\":812,\"y\":353},
		          {\"x\":812,\"y\":373},{\"x\":582,\"y\":373} ] "
	} ] 
} ]
イメージ:42626.png
 2418ms
Google 
 [ { "label": "LEGACY", "confidence": 1, "top": 110, "left": 551, "width": 155, "height": 34, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "MODERNIZATION",
	"confidence": 1, "top": 162, "left": 553, "width": 347, "height": 35, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "WITH", "confidence": 1, "top": 216, "left": 553, "width": 77, "height": 29, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "GENEXUS",
	"confidence": 1, "top": 216, "left": 641, "width": 150, "height": 29, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "15",
	"confidence": 1, "top": 216, "left": 823, "width": 31, "height": 29, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "Mlusion",
    "confidence": 1, "top": 99, "left": 274, "width": 24, "height": 7, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "GeneXus",
		"confidence": 1, "top": 96, "left": 34, "width": 85, "height": 3, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "it", "confidence": 1, "top": 136, "left": 279, "width": 4, "height": 5, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "it", "confidence": 1, "top": 136, "left": 287, "width": 8, "height": 7, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "(0S",
    "confidence": 1, "top": 262, "left": 291, "width": 9, "height": 7, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "430",
	"confidence": 1, "top": 263, "left": 304, "width": 9, "height": 7, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "ees",
    "confidence": 1, "top": 263, "left": 318, "width": 16, "height": 8, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "ATES", "confidence": 1, "top": 295, "left": 369, "width": 31, "height": 18, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "RLD", "confidence": 1, "top": 313, "left": 367, "width": 20, "height": 13, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "DOWNLOAD",
	"confidence": 1, "top": 356, "left": 586, "width": 106, "height": 15, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "THE", "confidence": 1, "top": 356, "left": 698, "width": 36, "height": 15, "Info":  [ { "property": "Language",
        "value": "" }  ]  }, { "label": "EBOOK!",
	"confidence": 1, "top": 356, "left": 741, "width": 69, "height": 15, "Info":  [ { "property": "Language",
        "value": "" }  ]  } ]
イメージ:41108.png
 2716ms
IBM 
 [ { "label": "gene",
    "confidence": 0.7228, "top": 92, "left": 35, "width": 62, "height": 27, "Info":  [ { "property": "line_number",
        "value": "#0.00000" }  ]  }, { "label": "nexus",
    "confidence": 0.8237, "top": 80, "left": 62, "width": 68, "height": 32, "Info":  [ { "property": "line_number",
        "value": "0.00000" } ]  }, { "label": "legacy",
    "confidence": 0.9684, "top": 111, "left": 553, "width": 158, "height": 37, "Info":  [ { "property": "line_number",
        "value": "#1.00000" }  ]  }, { "label": "modernization",
    "confidence": 0.9898, "top": 163, "left": 553, "width": 351, "height": 37, "Info":  [ { "property": "line_number", "value": "2.00000" } ]  }, ... } ]
イメージ:40299.png
 12898ms
Microsoft 
 [ { "label": "GeneXus", "confidence": 0, "top": 94, "left": 0, "width": 126, "height": 76, "Info":  [ { "property": "Angle",
            "value": "0.00000"
	}, {
		"property": "Language",
        "value": "en"
        }, {
            "property": "Orientation",
            "value": "" }  ]  }, { "label": "WITH GENEXUSTM 15",
    "confidence": 0, "top": 216, "left": 0, "width": 862, "height": 215, "Info":  [ { "property": "Angle",
            "value": "0.00000"
	}, {
		"property": "Language",
        "value": "en"
        }, {
            "property": "Orientation",
            "value": "" }  ]  }, { "label": "DOWNLOAD THE EBOOK!",
	"confidence": 0, "top": 353, "left": 0, "width": 813, "height": 352, "Info":  [ { "property": "Angle",
            "value": "0.00000"
	}, {
		"property": "Language",
        "value": "" }, { "property": "Orientation", "value": "" }  ]  }, ... ]
イメージ:40374.png
 8496ms
MLKit 
 [  ]
N/A
 -ms
SAP 
 [ { "label": "MODERNIZATION",
	"confidence": 0.995006024837494, "top": 159, "left": 562, "width": 322, "height": 41 }, { "label": "LEGACY", "confidence": 0.953990995883942, "top": 109, "left": 551, "width": 161, "height": 37 }, { "label": "Genexus",
	"confidence": 0.974162995815277, "top": 79, "left": 30, "width": 99, "height": 40 }, { "label": "DOWNLOAD",
	"confidence": 0.931997001171112, "top": 355, "left": 586, "width": 106, "height": 18 }, { "label": "GENEXUS",
	"confidence": 0.976303994655609, "top": 216, "left": 641, "width": 155, "height": 30 }, { "label": "WITH", "confidence": 0.947585999965668, "top": 217, "left": 550, "width": 83, "height": 27 }, { "label": "RATES", "confidence": 0.932789027690888, "top": 294, "left": 364, "width": 39, "height": 19 }, { "label": "EBOOK!", "confidence": 0.912930011749268, "top": 354, "left": 742, "width": 71, "height": 19 }, { "label": "RLD", "confidence": 0.899074018001556, "top": 310, "left": 362, "width": 28, "height": 18 }, { "label": "THE", "confidence": 0.899158000946045, "top": 356, "left": 698, "width": 39, "height": 16 }, { "label": "15",
	"confidence": 0.925707995891571, "top": 217, "left": 826, "width": 36, "height": 29 } ]
イメージ:40300.png
 3780ms
Tencent 
 [ { "label": "15",
	"confidence": 0.99, "top": 232, "left": 856, "width": 37, "height": 34 }, { "label": "MODE", "confidence": 0.975, "top": 242, "left": 577, "width": 96, "height": 70 }, { "label": "RLD", "confidence": 0.96, "top": 480, "left": 452, "width": 22, "height": 13 }, { "label": "RATES", "confidence": 0.955, "top": 461, "left": 447, "width": 36, "height": 17 }, { "label": "GENF", "confidence": 0.943, "top": 277, "left": 685, "width": 63, "height": 46 }, { "label": "THEE", "confidence": 0.873, "top": 396, "left": 780, "width": 38, "height": 44 }, { "label": "ERi",
    "confidence": 0.868, "top": 229, "left": 675, "width": 52, "height": 50 }, { "label": "NEXUS\"",
    "confidence": 0.863, "top": 242, "left": 746, "width": 89, "height": 68 }, { "label": "NZATON", "confidence": 0.848, "top": 159, "left": 735, "width": 180, "height": 103 }, { "label": "LEGAER", "confidence": 0.828, "top": 174, "left": 559, "width": 149, "height": 94 }, { "label": "?", "confidence": 0.775, "top": 350, "left": 120, "width": 29, "height": 42 }, { "label": "Gene", "confidence": 0.775, "top": 369, "left": 68, "width": 46, "height": 37 }, { "label": "EBDON", "confidence": 0.759, "top": 372, "left": 823, "width": 67, "height": 46 }, { "label": "MITHC", "confidence": 0.712, "top": 300, "left": 591, "width": 87, "height": 59 }, { "label": "auters", "confidence": 0.71, "top": 318, "left": 288, "width": 33, "height": 12 }, { "label": "OMCOO", "confidence": 0.614, "top": 411, "left": 677, "width": 97, "height": 58 }, { "label": "HhIsion", "confidence": 0.602, "top": 308, "left": 294, "width": 27, "height": 9 } ]
イメージ:41973.png
 1827ms

注

  • オブジェクトに割り当てられるラベルは、使用するプロバイダー (つまり、文字列検出精度) によって異なります。プロバイダーが OutputRegion.Info フィールドに追加情報を指定している場合は、その情報を参照できます。
  • ノイズを含む画像 (シャツに刻印されたロゴなど) に対して比較的高い精度を発揮するプロバイダーもあります。これらのプロバイダーは、画像内のクリーンなテキスト (スキャンされたテキストなど) に対しては、いずれも良好に動作します。
  • 画像ファイルサイズの上限は 10 MB です。
  • GeneXusAI では、画像への長方形の描画はサポートされていません。このアクションは開発者自身の責任で実行する必要があります。
    ヒント: Web アプリケーションの場合は、代わりに JavaScript を使用した HTML5 Canvas コントロールとユーザー コントロール オブジェクトの組み合わせを使用することをお勧めします。一方、スマートデバイスの場合は、Image Map コントロールを使用することで、処理後の画像を背景として設定し、四角の領域を描画できます (つまり、グリッドのテーブルアイテムに境界線の色を設定できます)。
  • IBM provider: 9月12日（2019）に廃止されました。IBM Visual Recognition リリース情報を参照してください。非推奨になる以前には、GeneXusAI は Visual Recognition のダークベータ機能を提供しており、ユーザーはアクセスを要求する必要がありました。

適用範囲

プラットフォーム Web (.NET、.NET Core、Java)、スマートデバイス (Android、iOS)
接続 オンライン

使用可能バージョン

このプロシージャーは、GeneXus 16 以降で利用できます。




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Created: 19/03/25 18:00 by Admin Last update: 21/08/25 01:03 by Admin
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