.NET中的Format16bppGrayScale问题 [英] Problem with Format16bppGrayScale in .NET

问题描述

任何人都知道如何在.net中处理16位灰度图像考虑这两个简单的代码：

Any one have idea about how to handle 16 bit gray scale images in .net consider this two simple code:

Dim Bitmap As New Bitmap(100, 100)
       Dim BitmapData As BitmapData = Bitmap.LockBits(New Rectangle(0, 0, Bitmap.Width, Bitmap.Height), ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format16bppGrayScale)

调试此代码时会发生此错误：



参数无效。



还有其他方法可以在.net中处理16位灰度图像吗？

请注意，我知道我可以使用48bpp代替它，但我考虑的是我的应用速度阳离子特别是在改变对比度/亮度时，对于3072 * 3072图像，改变对比度/亮度的过程约为0.7秒，很明显它不适合实时。请给出另一个解决方案。

when you debug this code this error will happen:

Parameter is not valid.

Is there any other way to handle 16 bit gray scale image in .net?
Attention please I know I can use 48bpp instead it but my consider in the speed of my application specially when change contrast/brightness, for a 3072*3072 image the process of changing contrast/brightness is around 0.7 second and it is clear that it is not suitable for real time. Please give another solution.

推荐答案

LockBits中的像素格式必须与要锁定的位图的格式兼容...一个简单的新的位图（w，h）没有其他参数会创建32位RGB图像，并且无法锁定为16位灰度!!!

使用也可以获得像素格式的构造函数变体： https：// msdn。 microsoft.com/en-us/library/3z132tat(v=vs.110).aspx [ ^ ]

The pixel format in LockBits must be compatible with the format of the bitmap you want to lock...A simple new Bitmap(w,h) with no additional parameters will create a 32 bit RGB image, and it can not be locked as 16 bit gray-scale!!!
Use the constructor variant that can get pixel format too: https://msdn.microsoft.com/en-us/library/3z132tat(v=vs.110).aspx[^]

Dim Bitmap As New Bitmap(100, 100, PixelFormat.Format16bppGrayScale)

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