Rotating UIImage for Google ML Vision framework on Swift 4

Question

When an image gets captured it defaults to left orientation. So when you feed it into the textDetector inside the Google Vision framework, it comes all jumbled, unless you take the photo oriented left (home button on the right). I want my app to support both orientations.

let visionImage = VisionImage(image: image)

self.textDetector?.detect(in: visionImage, completion: { (features, error) in
    //2
    guard error == nil, let features = features, !features.isEmpty else {
        print("Could not recognize any text")
        self.dismiss(animated: true, completion: nil)
        return
    }

    //3
    print("Detected Text Has \(features.count) Blocks:\n\n")
    for block in features {
    //4
        print("\(block.text)\n\n")
    }
})

I have tried to recreate the Image with a new orientation and that won't change it.

Does anyone know what to do?

I have tried all of these suggestions How to rotate image in Swift?

score 1 · Accepted Answer · answered Jul 03 '18 at 02:54

Try normalizing the UIImage object, using this function:

import UIKit

public extension UIImage {    
    public func normalizeImage() -> UIImage {
        if self.imageOrientation == UIImageOrientation.up {
            return self
        }

        UIGraphicsBeginImageContextWithOptions(self.size, false, self.scale)
        self.draw(in: CGRect(x: 0, y: 0, width: self.size.width, height: self.size.height))

        let normalizedImage: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
        UIGraphicsEndImageContext()

        return normalizedImage
    }
}

I hope this helps, cause I usually use this whenever there's an orientation problem.

Rotating UIImage for Google ML Vision framework on Swift 4

1 Answers1