recognizeText:onProgress:onTextOrientationDetected:error: method of the RTRCoreAPI protocol

Performs recognition of a single image.

- (NSArray<RTRTextBlock*>*)recognizeText:(UIImage*)image 
      onProgress:(BOOL(^)(int percentage, RTRCallbackWarningCode warningCode))progressCallback
      onTextOrientationDetected:(void(^)(int angle))textOrientationDetectedCallback
      error:(__autoreleasing NSError**)error;

Parameters

image
The image to be recognized.
onProgress
The callback informing you of approximate percentage of operation completed, and any warning that occurred (represented by an RTRCallbackWarningCode constant). This callback can also be used to interrupt processing: return TRUE if you wish to terminate the current operation, FALSE to continue.
onTextOrientationDetected
The callback informing you when the image orientation is detected. The angle parameter can take values of 0, 90, 180, and 270, and means the angle on which the image should be rotated to get normal orientation.
error
The error callback.

Return values

The method returns an array of RTRTextBlock objects which contain the results of recognition for the text areas found on the image.

3/2/2022 12:59:15 PM

Usage of Cookies. In order to optimize the website functionality and improve your online experience ABBYY uses cookies. You agree to the usage of cookies when you continue using this site. Further details can be found in our Privacy Notice.