From eae80e23ea1b739b2fbfe8890801c3d6bfae3f92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E5=8B=A4=E6=B0=91?= <xuqinmin@bjca.org.cn>
Date: Wed, 14 May 2025 18:30:59 +0800
Subject: [PATCH] =?UTF-8?q?feat(app):=20=E6=B7=BB=E5=8A=A0=E5=9B=BE?=
 =?UTF-8?q?=E7=89=87=E6=96=87=E5=AD=97=E8=AF=86=E5=88=AB=E5=8A=9F=E8=83=BD?=
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- 在 ImageHelper 中添加 recognizeText 方法，用于提取图片中的文字
---
 src/main/ets/utils/ImageHelper.ets | 37 ++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/src/main/ets/utils/ImageHelper.ets b/src/main/ets/utils/ImageHelper.ets
index 170080d..ee1b128 100644
--- a/src/main/ets/utils/ImageHelper.ets
+++ b/src/main/ets/utils/ImageHelper.ets
@@ -1,4 +1,8 @@
 import { image } from '@kit.ImageKit';
+import { FileHelper } from './FileHelper';
+import fs from '@ohos.file.fs';
+import { BusinessError } from '@kit.BasicServicesKit';
+import { textRecognition } from '@kit.CoreVisionKit';
 
 export class ImageHelper {
   private constructor() {
@@ -102,4 +106,37 @@ export class ImageHelper {
     }
     return compressedImageData;
   }
+
+  /**
+   * 提取图片中文字
+   * @param path
+   * @returns
+   */
+  static recognizeText(path: string): Promise<textRecognition.TextRecognitionResult> {
+    return new Promise((resolve, reject) => {
+      let file = FileHelper.openSync(path, fs.OpenMode.READ_ONLY)
+      const imageSource = image.createImageSource(file.fd);
+
+      imageSource.createPixelMap().then((pixelMap) => {
+        let visionInfo: textRecognition.VisionInfo = {
+          pixelMap: pixelMap
+        };
+        let textConfiguration: textRecognition.TextRecognitionConfiguration = {
+          isDirectionDetectionSupported: false
+        };
+
+        textRecognition.recognizeText(visionInfo, textConfiguration)
+          .then((data: textRecognition.TextRecognitionResult) => {
+            resolve(data)
+          })
+          .catch((error: BusinessError) => {
+            reject(error)
+          });
+      }).catch((err: BusinessError) => {
+        reject(err)
+      });
+    });
+
+
+  }
 }