C＃将位图快速加载到PictureBox中

Question

I receve Bitmap image from a camera at 30 fps, and I need to display all images in a pictureBox.
The problem is that the PictureBox is very slow!
I have try to implement a custom PictureBox with DoubleBuffer enabled but the problem is not resolved.
Do you have a custom PictureBox or an user control or a solution that can display the image faster?

Additional information:
The image resolution is 2048x1088 with 256 graylevel (8bit image).
I use AForge.NET for elaborate the images.

Thank you

Answer 1

That image gets expensive to draw when it has to be resized to fit the PB's client area. Which is very likely in your case because your images are pretty large. It uses a high-quality bi-cubic filter to make the resized image look good. That's pretty expensive, albeit that the result is good.

To avoid that expense, resize the image yourself before assigning it to the Image property. Make it just as large as the PB's ClientSize.

That's going to make a big difference in itself. The next thing you can do is to create the scaled bitmap with the 32bppPArgb pixel format. It's the format that's about 10 times faster then any other because it matches the video adapter on most machines so no pixel format conversions are necessary.