iOS API Reference - Recognizing

You are viewing a history document page of Dynamsoft Label Recognizer iOS v1.x.

recognizeByBuffer

Recognizes text from the memory buffer containing image pixels in defined format.

- (NSArray<iDLRResult*>*)recognizeByBuffer:(iDLRImageData*)imageData templateName:(NSString*)templateName error:(NSError**)error

Parameters [in] imageData An object of iDLRImageData that represents an image.
[in] templateName The template name. A template name is the value of key LabelRecognitionParameter.Name defined in JSON formatted settings. If no template name is specified, current runtime settings will be used. [in,out] error Input a pointer to an error object. If an error occurs, this pointer is set to an actual error object containing the error information. You may specify nil for this parameter if you do not want the error information.

Return Value All results recognized successfully.

Code Snippet

• Objective-C
• Swift

1. DynamsoftLabelRecognition *recognizer;
   iDMLTSConnectionParameters* lts = [[iDMLTSConnectionParameters alloc] init];
   lts.organizationID = @"200001";
   lts.sessionPassword = @"******";
   recognizer = [[DynamsoftLabelRecognition alloc] initLicenseFromLTS:lts verificationDelegate:self];
   - (void)LTSLicenseVerificationCallback:(bool)isSuccess error:(NSError * )error
   {
   //TODO add your code for license verification
   }
   iDLRResult *result;
   iDLRImageData *imageData = [[iDLRImageData alloc] init];
   //construct imageData
   NSError __autoreleasing *  error;
   result = [recognizer recognizeByBuffer:imageData templateName:@"" error:&error];
   

2. let lts = iDMLTSConnectionParameters()
   lts.organizationID = "200001"
   lts.sessionPassword = "******"
   let recognizer = DynamsoftLabelRecognition(licenseFromLTS: lts, verificationDelegate: self)
   let imageData = iDLRImageData.init()
   let error: NSError? = NSError()
   //construct imageData
   let result = recognizer.recognizeByBuffer(imageData:imageData, templateName:"", error:&error)
   

recognizeByFile

Recognizes text from a specified image file.

- (NSArray<iDLRResult*>*)recognizeByFile:(NSString*)name templateName:(NSString*)templateName error:(NSError**)error

Parameters name A string defining the file name.
templateName The template name. A template name is the value of key LabelRecognitionParameter.Name defined in JSON formatted settings. If no template name is specified, current runtime settings will be used. [in,out] error Input a pointer to an error object. If an error occurs, this pointer is set to an actual error object containing the error information. You may specify nil for this parameter if you do not want the error information.

Return Value All results recognized successfully.

Code Snippet

• Objective-C
• Swift

1. DynamsoftLabelRecognition *recognizer;
   iDMLTSConnectionParameters* lts = [[iDMLTSConnectionParameters alloc] init];
   lts.organizationID = @"200001";
   lts.sessionPassword = @"******";
   recognizer = [[DynamsoftLabelRecognition alloc] initLicenseFromLTS:lts verificationDelegate:self];
   - (void)LTSLicenseVerificationCallback:(bool)isSuccess error:(NSError * )error
   {
   //TODO add your code for license verification
   }
   iDLRResult *result;
   NSError __autoreleasing *  error;
   result = [recognizer recognizeByFile:@"your file path" templateName:@"" error:&error];
   

2. let lts = iDMLTSConnectionParameters()
   lts.organizationID = "200001"
   lts.sessionPassword = "******"
   let recognizer = DynamsoftLabelRecognition(licenseFromLTS: lts, verificationDelegate: self)
   let error: NSError? = NSError()
   //construct imageData
   let result = recognizer.recognizeByFile("your file path", templateName:"", error:&error)