使用coreimage是图片产生这种黑白滤镜的效果,求解答该怎么实现
![](https://img-ask.csdnimg.cn/upload/1620883281683.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)
![](https://img-ask.csdnimg.cn/upload/1620883313844.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)
[UIImage imageWithCIImage:[[CIImage imageWithCGImage:inputImage.CGImage] imageByApplyingFilter:@"CIColorControls" withInputParameters:@{ kCIInputContrastKey: @(7), kCIInputSaturationKey: @(1), kCIInputBrightnessKey: @(1.2) }]];
我尝试使用这句代码,但是图片地步有阴影