捕获图像时,默认为左方向。所以,当你把它喂入textDetector
里面的Google Vision framework
时,它会变得混乱,除非你把照片朝左(右边的主页按钮)。我希望我的应用程序支持这两种方向。
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")
}
})
我试图用新的方向重新创建图像,但不会改变它。
有谁知道该怎么办?
我已经尝试了所有这些建议How to rotate image in Swift?
尝试使用此函数规范化UIImage对象:
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
}
}
我希望这会有所帮助,因为每当出现方向问题时我都会使用它。