从图像ZBar扫描条形码

Question

I scan any barcode by using zbar at that time this API scans a barcode also It scans an image. any one please help me to do this...assume that I have one Mazza Bottle in that bottle Barcode is there But particular barcode is on Orange plastic. Ween ever I scan any barcode image at that time zbar scans barcode with orange color... So I just want to nget barcode not any other portion than barcode.

- (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 doesnt retouch the image for you. it gives you the image it scanned without modification.

you can get the cropped image (the one in the rectangle of the scanner view)

- (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];
    //...
}