将CIImage转换为NSImage [英] Converting CIImage Into NSImage

问题描述

我在玩Core Image框架。据我所知，如果我有一个图片（ NSImage ），则需要先将其转换为 CIImage 。我可以这样做。

I'm playing with the Core Image framework. As I understand, if I have an image (NSImage), it needs to be converted into CIImage, first. I can do that.

NSImage *im1 = [[NSImage alloc] initWithContentsOfFile:imagepath];
NSRect rect1;rect1.size.width = img1.size.width; rect1.size.height = img1.size.height;
CGImageRef imageRef1 = [img1 CGImageForProposedRect:&rect1 context:[NSGraphicsContext currentContext] hints:nil];
CIImage *ciimage = [CIImage imageWithCGImage:imageRef1];

我有一个函数将核心图像过滤器应用于核心图像（ CIImage <强>），我想测试。并且我想将输出图像作为子视图添加到窗口。所以我需要NSImage。如何将这个核心映像转换回NSImage？如果我问谷歌，我得不到好的结果。

I have a function that applies a Core Image filter to a core image (CIImage), which I want to test. And I want to add output image to a window as a subview. So I need NSImage. How can I convert this core image back into NSImage? If I ask Google, I don't get good results.

感谢您的帮助。

推荐答案

我没有测试，但我认为应该这样做：

I haven't tested it, but I think this should do it:

CIImage *ciImage = ...;

NSCIImageRep *rep = [NSCIImageRep imageRepWithCIImage:ciImage];
NSImage *nsImage = [[NSImage alloc] initWithSize:rep.size];
[nsImage addRepresentation:rep];

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