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feat(OCR服务): 支持base64字符串作为OCR输入

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扩展tesseractOcr函数以接受base64字符串或图像文件作为输入
This commit is contained in:
icarus 2025-08-22 16:54:57 +08:00
parent 1864419e70
commit af05960cd3
1 changed files with 12 additions and 7 deletions
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19
src/main/services/ocr/OcrService.ts
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@ -19,19 +19,24 @@ const logger = loggerService.withContext('main:OcrService')
/**
* ocr by tesseract
* @param file image file
* @param file image file or base64 string
* @returns ocr result
* @throws {Error}
*/
const tesseractOcr = async (file: ImageFileMetadata): Promise<string> => {
const tesseractOcr = async (file: ImageFileMetadata | string): Promise<string> => {
try {
const worker = await getTesseractWorker()
const stat = statSync(file.path)
if (stat.size > 50 * MB) {
throw new Error('This image is too large (max 50MB)')
let ret: Tesseract.RecognizeResult
if (typeof file === 'string') {
ret = await worker.recognize(file)
} else {
const stat = statSync(file.path)
if (stat.size > 50 * MB) {
throw new Error('This image is too large (max 50MB)')
}
const buffer = await readFile(file.path)
ret = await worker.recognize(buffer)
}
const buffer = await readFile(file.path)
const ret = await worker.recognize(buffer)
return ret.data.text
} catch (e) {
logger.error('Failed to ocr with tesseract.', e as Error)