使用Opencv示例从Camera保存图像

问题描述

我从 https://github.com/Itseez/opencv_for_ios_book_samples\"rel =nofollow noreferrer> IOS示例。并试图从相机保存图像。问题是图像被保存但是带有蓝色色调，如下所示。

I have used this code from the IOS examples. And tried to save the images from camera. The issue is that the image is getting saved but with a blue tint as below.

以下是我用来保存图片的代码。

The below is the code I used to save the image.

 - (void)processImagecv::Mat&image
{
    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];

    UIImage * convertedImage = [ViewController imageWithCVMat:image];

    [library writeImageToSavedPhotosAlbumconvertedImage CGImage] orientationALAssetOrientation)[convertedImage imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){
        if (error)
        {
            // TODO: error handling
        }
        else
        {
            // TODO: success handling
            NSLog(@"Success";

        }
    }];

    TS(DetectAndAnimateFaces);
    faceAnimator->detectAndAnimateFaces(image);
    TE(DetectAndAnimateFaces);
}

推荐答案

在给定的图像中，通道的顺序是相反的，即来自opencv默认表示BGR图像具有RGB表示，即交换红色和蓝色通道。

In a given image order of channels is reversed, ie instead from opencv default representation BGR the image has the representation RGB, namely channel red and blue are swapped.

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