iphone - 将相机模式设为黑白

Question

如何将相机变成黑白模式。这样我就可以拍摄黑白视频。

注意:不使用 OpenGL。

提前致谢。

Answer 1

也许GPUImage可以帮助:

The GPUImage framework is a BSD-licensed iOS library that lets you apply GPU-accelerated filters and other effects to images, live camera video, and movies. In comparison to Core Image (part of iOS 5.0), GPUImage allows you to write your own custom filters, supports deployment to iOS 4.0, and has a simpler interface. However, it currently lacks some of the more advanced features of Core Image, such as facial detection.

GPUImageGrayscaleFilter: Converts an image to grayscale (a slightly faster implementation of the saturation filter, without the ability to vary the color contribution)