class ContourDetectorSettingsclass ContourDetectorSettingsclass ContourDetector. ML_BASED is the default implementationclass ContourDetectorSettingsARGB_8888 Bitmap from an in-memory JPEG.ARGB_8888 Bitmap from an in-memory JPEG.ARGB_8888 Bitmap from encoded JPEG on file systemARGB_8888 Bitmap from encoded JPEG on file systemContourDetector.detectclass PageAspectRatios.enum ContourDetector.Type which should be used as a default type