在 iPhone 中的 UIImagePicker 中重新调整图像大小

发布于 2024-10-06 04:29:24 字数 748 浏览 0 评论 0原文

我正在使用 UIImagePicker 从相机捕获图像。我的问题是我想使用自定义坐标重新调整图像大小。

因此，让我有一个用户可以在其中拍照的框架，我只想保存该框架区域。例如：如果我正在给一个人拍照，框架覆盖了他的脸，那么我只需要保存脸部区域而不是背景和身体的其他部分。

我正在使用的代码是： `

CGRect scaledRect = CGRectZero;

CGSize targetSize = CGSizeMake( baseImage.size.width,baseImage.size.height);

scaledRect.origin = CGPointMake(0, 0); 
scaledRect.size.width  = baseImage.size.width;
scaledRect.size.height =  baseImage.size.height;

UIGraphicsBeginImageContext(targetSize);    
[baseImage drawInRect:scaledRect];  

UIImage* result = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();    

return result;

还有一个问题，我还需要担心设备方向吗？如果用户以横向模式拍照，我需要处理这个问题吗？

请建议

原文

I am using UIImagePicker to capture image from camera. My problem is I want to re-size the image with custom coordinate.

So let I have frame in which user can take a picture and I want to save ONLY that frame area. Ex: if I am taking picture of a person the frame is covering his face then I just need to save the face area not the background the other body portion.

The code which I am using is :
`

CGRect scaledRect = CGRectZero;

CGSize targetSize = CGSizeMake( baseImage.size.width,baseImage.size.height);

scaledRect.origin = CGPointMake(0, 0); 
scaledRect.size.width  = baseImage.size.width;
scaledRect.size.height =  baseImage.size.height;

UIGraphicsBeginImageContext(targetSize);    
[baseImage drawInRect:scaledRect];  

UIImage* result = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();    

return result;

One more question, Do I need to worry about device orientation too? If user is taking picture in landscape mode do I need to handle this?

Please suggest

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