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Simple text recognition using Apple's Vision Framework (Part 3)
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import UIKit | |
import Vision | |
let image = UIImage(named: "<image_name_goes_here>") | |
if let cgImage = image?.cgImage { | |
let requestHandler = VNImageRequestHandler(cgImage: cgImage) | |
let recognizeTextRequest = VNRecognizeTextRequest { (request, error) in | |
// 1. Parse the results | |
guard let observations = request.results as? [VNRecognizedTextObservation] else { | |
return | |
} | |
// 2. Extract the data you want | |
let recognizedStrings = observations.compactMap { observation in | |
observation.topCandidates(1).first?.string | |
} | |
// 3. Display or update UI | |
DispatchQueue.main.async { | |
print(recognizedStrings) | |
} | |
} | |
recognizeTextRequest.recognitionLevel = .fast | |
DispatchQueue.global(qos: .userInitiated).async { | |
do { | |
try requestHandler.perform([recognizeTextRequest]) | |
} catch { | |
print(error) | |
} | |
} | |
} |
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