[UWP] [VB]查看SoftwareBitmap的像素 [英] [UWP][VB]View Pixels of a SoftwareBitmap

问题描述

我有从MediaCapture获得的SoftwareBitmap，我想查看各个像素。我该怎么做呢？谢谢。

---

Nathan Sokalski [e-mail] http://www.nathansokalski.com/

解决方案

< blockquote>

你好，

阅读
SoftwareBitmap   first：  使用CopyToBuffer和CopyFromBuffer在SoftwareBitmap和WriteableBitmap的PixelBuffer之间来回复制像素数据。

然后参见
WriteableBitmap
： 

WriteableBitmap的图像源数据是基础像素缓冲。 WriteableBitmap.PixelBuffer不能直接写入，但是，您可以使用特定于语言的技术来访问缓冲区并更改其内容。

要从C＃或Microsoft Visual Basic访问像素内容，您可以使用AsStream扩展方法以流的形式访问底层缓冲区。

对于特定像素，请参阅此主题的答案：  https://social.msdn.microsoft.com/论坛/ zh-CN / 6b7a7beb-0e18-484f-8e9c-5fad3482485d / uwp-bitmap-class-access-raw-pixel-data？forum = wpdevelop 

Rob在哪里提供了回答如何计算像素在数组中的位置。并且
你可以
找个样子。

祝你好运，

Barry

I have a SoftwareBitmap obtained from MediaCapture, and I would like to view the individual pixels. How do I do this? Thanks.

---

Nathan Sokalski [e-mail] http://www.nathansokalski.com/

解决方案

Hello,

Read SoftwareBitmap first: Use CopyToBuffer and CopyFromBuffer to copy pixel data back and forth between a SoftwareBitmap and the PixelBuffer of a WriteableBitmap.

Then see WriteableBitmap : 

The image source data of a WriteableBitmap is an underlying pixel buffer. WriteableBitmap.PixelBuffer cannot be written to directly, however, you can use language-specific techniques to access the buffer and change its contents.
To access the pixel content from C# or Microsoft Visual Basic, you can use the AsStream extension method to access the underlying buffer as a stream.

And to specific pixel, see the answer from this thread: https://social.msdn.microsoft.com/Forums/en-US/6b7a7beb-0e18-484f-8e9c-5fad3482485d/uwp-bitmap-class-access-raw-pixel-data?forum=wpdevelop 

Where Rob has provided the answer for how to caculate the a pixel's position in the array. And here you can find a sample.

Best regards,

Barry

这篇关于[UWP] [VB]查看SoftwareBitmap的像素的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！