- (UIImage *)cgreateGaussianBlurImage:(UIImage *)image {
CIContext *context = [CIContext contextWithOptions:nil];
CIImage *ciImage = [CIImage imageWithCGImage:image.CGImage];
CIFilter *filter = [CIFilter filterWithName:@"CIGaussianBlur"];
[filter setValue:ciImage forKey:kCIInputImageKey];
//设置模糊程度 (值越大，越模糊)
[filter setValue:@10.0f forKey: @"inputRadius"];
CIImage *result = [filter valueForKey:kCIOutputImageKey];
// CGRect frame = [ciImage extent];
CGImageRef outImage = [context createCGImage:result fromRect:ciImage.extent];
UIImage * blurImage = [UIImage imageWithCGImage:outImage];
// 内存释放 (补充)
CGImageRelease(outImage);
return blurImage;
}
