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根据我对 Apple 文档的理解,“CIFaceFeature”类对象是 API 计算的面部特征值的容器(即 hasLeftEyePosition、hasRightEyePosition、hasMouthPosition、leftEyePosition、rightEyePosition、mouthPosition),即这些属性的值是只读的,并且将由某个实例方法设置(给定对此类对象的引用和对图像的引用作为参数)。不幸的是,没有提到这样的功能或任何例子:-(