ios - 从静态/静态图像中读取二维码

Question

我正在开发一个应用程序，我必须从静态图像中读取二维码。以下是我用来读取二维码的代码:

CIImage *ciimage = [CIImage imageWithCGImage:[getRotatedImage CGImage]];

NSDictionary *detectorOptions = @{ CIDetectorAccuracy : CIDetectorAccuracyHigh };
            CIDetector *faceDetector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:detectorOptions];

 NSArray *features = [faceDetector featuresInImage:ciimage];
            CIQRCodeFeature *faceFeature;
            for(faceFeature in features)
            {
                NSString *str = [NSString stringWithFormat:@"%@",faceFeature.messageString];
                break;
            }

此代码对于某些 QR 码工作正常，但有时无法处理静态图像并返回空白数组。我搜索了很多，也看到了苹果论坛，他们也描述了我使用过的相同代码。我还附上了未解码的图像。 请任何机构有任何类型的信息，然后与我分享。我们将非常感激。提前致谢。

Answer 1

我刚刚在本地测试了您的图像，我可以确认，二维码未被读取。我相信你的问题是二维码。看来 Logo 可能会干扰 CIDetector。我用另一个二维码替换了您的二维码，并且成功了。

UIImage *image = [UIImage imageNamed:@"qr3"];
    CIImage *ciimage = [CIImage imageWithData:UIImageJPEGRepresentation(image, 1.0f)];

    NSDictionary *detectorOptions = @{ CIDetectorAccuracy : CIDetectorAccuracyHigh };
    CIDetector *faceDetector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:detectorOptions];

    NSArray *features = [faceDetector featuresInImage:ciimage];
    CIQRCodeFeature *faceFeature;
    for(faceFeature in features) {
        NSString *str = [NSString stringWithFormat:@"%@",faceFeature.messageString];
        NSLog(@"Found feature: %@", str);
        break;
    }

此日志:发现功能:http://en.m.wikipedia.org