How to convert between PIxelFormat? [duplicate]

This question already has answers here: 开发者_如何学运维 Closed 11 years ago.

Possible Duplicate:

Converting Bitmap PixelFormats in C#

How to convert a Bitmap with different PixelFormat to the PixelFormat.Format32bppArgb format?

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Try to use next

var bmp = new Bitmap(yourImage.Width, yourImage.Height, System.Drawing.Imaging.PixelFormat.Format16bppRgb555);
using (var gr = Graphics.FromImage(bmp))
    gr.DrawImage(yourImage, new Rectangle(0, 0, yourImage.Width, yourImage.Height));

bmp - will have 16 bit quality. Specify PixelFormat to what you want