从iplImage转换为UIImage

最新推荐文章于 2025-10-23 13:29:29 发布

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本文介绍如何将OpenCV中的IplImage数据结构转换为iOS中的UIImage，并提供了使用cvSaveImage保存图片的方法。此外，还展示了如何通过UIImage将原始图像数据转换为PNG或JPEG格式并保存。

You should use cvSaveImage for that. cvSave saves image in XML/YAML format. Or as an option you can take raw image data and get PNG/JPEG representation usingUIImagePNGRepresentation()/UIImageJPEGRepresentation() and save using [NSData writeToFile...]

To convert IplImage to UIImage use:

UIImage*  CreateUIImageFromIplImage(IplImage* ipl_image) {
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    NSData* data = [NSData dataWithBytes: ipl_image->imageData length: ipl_image->imageSize];
    CGDataProviderRef provider = CGDataProviderCreateWithCFData((CFDataRef)data);
    CGImageRef imageRef = CGImageCreate(ipl_image->width, ipl_image->height,
                                        ipl_image->depth, ipl_image->depth * ipl_image->nChannels, ipl_image->widthStep,
                                        colorSpace, kCGImageAlphaNone|kCGBitmapByteOrderDefault,
                                        provider, NULL, false, kCGRenderingIntentDefault);
    UIImage* ret = [UIImage imageWithCGImage: imageRef];
    CGImageRelease(imageRef);
    CGDataProviderRelease(provider);
    CGColorSpaceRelease(colorSpace);

    return ret;
}