ngx-image-id-detector
Version:
A package that detects if an image is a Vietnamese citizen ID using Tesseract.js
144 lines (137 loc) • 6.57 kB
JavaScript
import { __awaiter } from 'tslib';
import * as i0 from '@angular/core';
import { Injectable, Component, NgModule } from '@angular/core';
import { createWorker, PSM } from 'tesseract.js';
import { from } from 'rxjs';
import { map, catchError } from 'rxjs/operators';
class DetectIdService {
constructor() {
this.SIDE_PATTERNS = new Map([
['front', [
'CANCUCCONGDAN',
'CONGHAXHICHNGHAVITNAM',
'CNGHAXHICHNGHAVIETNAM',
'CONGHOAXAHOICHUNGHIAVIETNAM',
'ĐOCLAPTUDOHANHPHUC',
'HOVATENEULLNAME',
'DENTITYCARD'
]],
['back', [
'ĐACĐIEMNHANDANGPERSONALIDENTIICATION',
'CUCTRUONGCUCCANHSAT',
'DANGPERSONALIDENTILICATION',
'CUCCANHSAT',
'NGONTROTRAI',
'NGONTROPHAI',
'CCTRUNGCCCNH',
'QUNLHNHCHNHVETRATTUXAHĐHU',
'THEPOLICEDEPARTMENT',
'NHANDANGPERSONALIDENTILICATI',
'BOGONGANIUISRYOEPUBLICSECURITY',
'SINHPACEOBIRIH'
]]
]);
}
detectIdCard(file, options) {
return from(this.processImage(file, options)).pipe(map(result => result), catchError(error => {
console.error('OCR Processing Error:', error);
throw new Error('Không thể xử lý hình ảnh CCCD. Vui lòng thử lại.');
}));
}
processImage(file, options) {
return __awaiter(this, void 0, void 0, function* () {
const { language = 'vie', whitelist = 'AĂÂBCDĐEÊGHIKLMNOÔƠPQRSTUƯVXYZaăâbcdđeêghiklmnoôơpqrstuưvxyz' +
'ÀÁẢÃẠÂẤẦẨẪẬĂẮẰẲẴẶĐÈÉẺẼẸÊẾỀỂỄỆÌÍỈĨỊÒÓỎÕỌÔỐỒỔỖỘƠỚỜỞỠỢÙÚỦŨỤƯỨỪỬỮỰ' +
'àáảãạâấầẩẫậăắằẳẵặđèéẻẽẹêếềểễệìíỉĩịòóỏõọôốồổỗộơớờởỡợùúủũụưứừửữự' +
'ÝỲỶỸỴýỳỷỹỵ', logger } = options || {};
let worker = null;
try {
worker = yield createWorker(language, 1, { logger });
yield worker.setParameters({
tessedit_char_whitelist: whitelist,
tessedit_pageseg_mode: PSM.AUTO_OSD,
});
const { data: { text } } = yield worker.recognize(file, { rotateAuto: true });
const normalizedText = this.normalizeText(text);
for (const [side, patterns] of this.SIDE_PATTERNS.entries()) {
if (patterns.some(p => normalizedText.includes(this.normalizeText(p)))) {
return { side, text: normalizedText };
}
}
return { side: 'unknown', text: normalizedText };
}
catch (error) {
throw new Error('Không thể xử lý hình ảnh. Vui lòng kiểm tra lại ảnh CCCD.');
}
finally {
if (worker) {
yield worker.terminate();
}
}
});
}
normalizeText(text) {
return text
.toUpperCase()
.normalize('NFD')
.replace(/[\u0300-\u036f]/g, '') // Remove diacritics
.replace(/\s+/g, ' ') // Normalize spaces
.trim();
}
}
DetectIdService.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: DetectIdService, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
DetectIdService.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: DetectIdService, providedIn: 'root' });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: DetectIdService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}] });
class NgxImageIdDetectorComponent {
constructor() { }
ngOnInit() {
}
}
NgxImageIdDetectorComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: NgxImageIdDetectorComponent, deps: [], target: i0.ɵɵFactoryTarget.Component });
NgxImageIdDetectorComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.2.7", type: NgxImageIdDetectorComponent, selector: "lib-ngx-image-id-detector", ngImport: i0, template: `
<p>
ngx-image-id-detector works!
</p>
`, isInline: true });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: NgxImageIdDetectorComponent, decorators: [{
type: Component,
args: [{
selector: 'lib-ngx-image-id-detector',
template: `
<p>
ngx-image-id-detector works!
</p>
`,
styles: []
}]
}], ctorParameters: function () { return []; } });
class NgxImageIdDetectorModule {
}
NgxImageIdDetectorModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: NgxImageIdDetectorModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
NgxImageIdDetectorModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: NgxImageIdDetectorModule, declarations: [NgxImageIdDetectorComponent], exports: [NgxImageIdDetectorComponent] });
NgxImageIdDetectorModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: NgxImageIdDetectorModule, imports: [[]] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.2.7", ngImport: i0, type: NgxImageIdDetectorModule, decorators: [{
type: NgModule,
args: [{
declarations: [
NgxImageIdDetectorComponent
],
imports: [],
exports: [
NgxImageIdDetectorComponent
]
}]
}] });
/*
* Public API Surface of ngx-image-id-detector
*/
/**
* Generated bundle index. Do not edit.
*/
export { DetectIdService, NgxImageIdDetectorComponent, NgxImageIdDetectorModule };
//# sourceMappingURL=ngx-image-id-detector.mjs.map