ngx-image-id-detector/fesm2015/ngx-image-id-detector.mjs.map

A package that detects if an image is a Vietnamese citizen ID using Tesseract.js

{"version":3,"file":"ngx-image-id-detector.mjs","sources":["../../../projects/ngx-image-id-detector/src/lib/ngx-image-id-detector.service.ts","../../../projects/ngx-image-id-detector/src/lib/ngx-image-id-detector.component.ts","../../../projects/ngx-image-id-detector/src/lib/ngx-image-id-detector.module.ts","../../../projects/ngx-image-id-detector/src/public-api.ts","../../../projects/ngx-image-id-detector/src/ngx-image-id-detector.ts"],"sourcesContent":["import { Injectable } from '@angular/core';\nimport { createWorker, PSM, Worker } from 'tesseract.js';\nimport { from, Observable } from 'rxjs';\nimport { map, catchError } from 'rxjs/operators';\n\nexport type IdCardSide = 'front' | 'back' | 'unknown';\n\nexport interface DetectIdResult {\n  side: IdCardSide;\n  text: string;\n}\n\nexport interface DetectIdOptions {\n  language?: string;\n  whitelist?: string;\n  logger?: (msg: any) => void;\n}\n@Injectable({\n  providedIn: 'root'\n})\nexport class DetectIdService {\n  private readonly SIDE_PATTERNS = new Map<IdCardSide, string[]>([\n    ['front', [\n      'CANCUCCONGDAN',\n      'CONGHAXHICHNGHAVITNAM',\n      'CNGHAXHICHNGHAVIETNAM',\n      'CONGHOAXAHOICHUNGHIAVIETNAM',\n      'ĐOCLAPTUDOHANHPHUC',\n      'HOVATENEULLNAME',\n      'DENTITYCARD'\n    ]],\n    ['back', [\n      'ĐACĐIEMNHANDANGPERSONALIDENTIICATION',\n      'CUCTRUONGCUCCANHSAT',\n      'DANGPERSONALIDENTILICATION',\n      'CUCCANHSAT',\n      'NGONTROTRAI',\n      'NGONTROPHAI',\n      'CCTRUNGCCCNH',\n      'QUNLHNHCHNHVETRATTUXAHĐHU',\n      'THEPOLICEDEPARTMENT',\n      'NHANDANGPERSONALIDENTILICATI',\n      'BOGONGANIUISRYOEPUBLICSECURITY',\n      'SINHPACEOBIRIH'\n    ]]\n  ]);\n\n  detectIdCard(file: File, options?: DetectIdOptions): Observable<DetectIdResult> {\n    return from(this.processImage(file, options)).pipe(\n      map(result => result),\n      catchError(error => {\n        console.error('OCR Processing Error:', error);\n        throw new Error('Không thể xử lý hình ảnh CCCD. Vui lòng thử lại.');\n      })\n    );\n  }\n\n  private async processImage(file: File, options?: DetectIdOptions): Promise<DetectIdResult> {\n    const {\n      language = 'vie',\n      whitelist = 'AĂÂBCDĐEÊGHIKLMNOÔƠPQRSTUƯVXYZaăâbcdđeêghiklmnoôơpqrstuưvxyz' +\n      'ÀÁẢÃẠÂẤẦẨẪẬĂẮẰẲẴẶĐÈÉẺẼẸÊẾỀỂỄỆÌÍỈĨỊÒÓỎÕỌÔỐỒỔỖỘƠỚỜỞỠỢÙÚỦŨỤƯỨỪỬỮỰ' +\n      'àáảãạâấầẩẫậăắằẳẵặđèéẻẽẹêếềểễệìíỉĩịòóỏõọôốồổỗộơớờởỡợùúủũụưứừửữự' +\n      'ÝỲỶỸỴýỳỷỹỵ',\n      logger\n    } = options || {};\n\n    let worker: Worker | null = null;\n    try {\n      worker = await createWorker(language, 1, { logger });\n\n      await worker.setParameters({\n        tessedit_char_whitelist: whitelist,\n        tessedit_pageseg_mode: PSM.AUTO_OSD,\n      });\n\n      const { data: { text } } = await worker.recognize(file, { rotateAuto: true });\n      const normalizedText = this.normalizeText(text);\n\n      for (const [side, patterns] of this.SIDE_PATTERNS.entries()) {\n        if (patterns.some(p => normalizedText.includes(this.normalizeText(p)))) {\n          return { side, text: normalizedText };\n        }\n      }\n\n      return { side: 'unknown', text: normalizedText };\n    } catch (error) {\n      throw new Error('Không thể xử lý hình ảnh. Vui lòng kiểm tra lại ảnh CCCD.');\n    } finally {\n      if (worker) {\n        await worker.terminate();\n      }\n    }\n  }\n\n  private normalizeText(text: string): string {\n    return text\n      .toUpperCase()\n      .normalize('NFD')\n      .replace(/[\\u0300-\\u036f]/g, '') // Remove diacritics\n      .replace(/\\s+/g, ' ') // Normalize spaces\n      .trim();\n  }\n}\n","import { Component, OnInit } from '@angular/core';\n\n@Component({\n  selector: 'lib-ngx-image-id-detector',\n  template: `\n    <p>\n      ngx-image-id-detector works!\n    </p>\n  `,\n  styles: [\n  ]\n})\nexport class NgxImageIdDetectorComponent implements OnInit {\n\n  constructor() { }\n\n  ngOnInit(): void {\n  }\n\n}\n","import { NgModule } from '@angular/core';\nimport { NgxImageIdDetectorComponent } from './ngx-image-id-detector.component';\n\n\n\n@NgModule({\n  declarations: [\n    NgxImageIdDetectorComponent\n  ],\n  imports: [\n  ],\n  exports: [\n    NgxImageIdDetectorComponent\n  ]\n})\nexport class NgxImageIdDetectorModule { }\n","/*\n * Public API Surface of ngx-image-id-detector\n */\n\nexport * from './lib/ngx-image-id-detector.service';\nexport * from './lib/ngx-image-id-detector.component';\nexport * from './lib/ngx-image-id-detector.module';\n","/**\n * Generated bundle index. 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