https://developers.google.cn/android/reference/com/google/mlkit/vision/documentscanner/GmsDocumentScannerOptions.ScannerMode
GmsDocumentScannerOptions.ScannerMode | ML Kit | Google for Developers
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https://developers.google.com/android/reference/com/google/mlkit/vision/documentscanner/GmsDocumentScannerOptions.CaptureMode
GmsDocumentScannerOptions.CaptureMode | ML Kit | Google for Developers
ml kitgoogledevelopers