ios - 从图像 ZBar 扫描条形码

Question

我当时使用 zbar 扫描任何条形码，这个 API 扫描条形码也扫描图像。任何人都请帮我做这件事...假设我在那个瓶子里有一个 Mazza 瓶子 条码在那里 但特定的条码在橙色塑料上。我曾经扫描过任何条码图像，当时 zbar 扫描橙色条码......所以我只想获取条码而不是条码以外的任何其他部分。

- (void)viewDidLoad
{
   [super viewDidLoad];
   reader = [ZBarReaderViewController new];
   capture = [ZBarCaptureReader new];
   capture.captureDelegate = self;
   reader.readerDelegate = self;
   reader.supportedOrientationsMask = ZBarOrientationMaskAll;
   ZBarImageScanner *scanner = reader.scanner;

    [scanner setSymbology: ZBAR_I25
                   config: ZBAR_CFG_ENABLE
                       to: 0];

}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
{
    id<NSFastEnumeration> results =
    [info objectForKey: ZBarReaderControllerResults];
    ZBarSymbol *symbol = nil;

    for(symbol in results)
        // EXAMPLE: just grab the first barcode
        break;
    label.text = symbol.data;
    imageView.image = [info objectForKey: UIImagePickerControllerOriginalImage];

    // ADD: dismiss the controller (NB dismiss from the *reader*!)
    [reader dismissViewControllerAnimated:YES completion:^{}];

}

Answer 1

zbar 不会为您修图。它会为您提供未经修改的扫描图像。

你可以得到裁剪后的图像(扫描仪 View 矩形中的那个)

- (void)imagePickerController:(UIImagePickerController *)imagePicker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    UIImage *img = info[UIImagePickerControllerOriginalImage];
    ZBarImage *cropped = [[ZBarImage alloc] initWithCGImage:img.CGImage crop:((ZBarReaderViewController*)imagePicker).scanCrop size:img.size];
    //...
}