【笔记】Swift实现离线OCR识别

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前言

Swift实现离线OCR识别

正文

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let requestHandler = VNImageRequestHandler(cgImage: cgImage)
let request = VNRecognizeTextRequest() { (request: VNRequest?, error: Error?) in
    if let error = error {
        print("ERROR: \(error)")
        return
    }
    guard let results = request?.results, results.count > 0 else {
        print("No text found")
        return
    }
    
    for result in results {
        if let observation = result as? VNRecognizedTextObservation {
            for text in observation.topCandidates(1) {
                let string = text.string
                print("OCR识别结果: \(string)")
            }
        }
    }
}
request.recognitionLevel = .accurate
// 设置文本识别的语言 ["en-US", "fr-FR", "it-IT", "de-DE", "es-ES", "pt-BR", "zh-Hans", "zh-Hant", "yue-Hans", "yue-Hant", "ko-KR", "ja-JP", "ru-RU", "uk-UA", "th-TH", "vi-VT"]
request.recognitionLanguages = ["en"]
do {
    try requestHandler.perform([request])
} catch {
    print("Unable to perform the requests: \(error).")
}

完成

参考文献

叶落阁的博客
CSDN——zhonguncle