如何以编程方式放大来自相机的feed？ [英] How to programmatically zoom-in the feed from the camera?

问题描述

我想要能够以编程方式调整相机Feed的缩放级别。

I want to be able to programmatically adjust the zoom level of the camera feed.

我不知道手机相机是否有光学变焦，如果Windows phone 7让程序员控制它（如果有的话）。如果是，请让我知道如何。

I do not know whether cell-phone cameras have optical zoom or not and if Windows phone 7 lets a programmer control it (if it is there). If it does, please let me know how.

如果没有，我想要能够以数字方式放大相机供稿（数码变焦）。指向如何以编程方式这将是巨大的指针。谢谢！

If it doesn't, I want to able to digitally magnify the camera feed (digital zoom). A pointer to how to do this programmatically would be great. Thanks!

推荐答案

Windows Phone 7硬件规格不包括光学变焦。您可以按照 MSDN教程。您可以通过捕获图片AsyncCaptureImage ，它为您提供 WriteableBitmap ，然后您可以使用它进行数字缩放。

The Windows Phone 7 hardware specification does not include optical zoom. You can access the live images from the camera in Silverlight code via a CaptureSource as described in this MSDN tutorial. You can capture images via AsyncCaptureImage, which provides you with a WriteableBitmap which you can then use to zoom digitally.

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