Speed of interpolation algorithms, C# and C++ working together.
- by Kaminari
Hello.
I need fast implementation of popular interpolation algorithms. I figured it out that C# in such simple algorithms will be much slower than C++ so i think of writing some native code and using it in my C# GUI.
First of all i run some tests and few operations on 1024x1024x3 matrix took 32ms in C# and 4ms in C++ and that's what i basicly need.
Interpolation however is not a good word because i need them only for downscaling. But the question is: Will it be faster than C# methods in Drawing2D
Image outputImage = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb);
Graphics grPhoto = Graphics.FromImage(outputImage);
grPhoto.InterpolationMode = InterpolationMode.*; //all of them
grPhoto.DrawImage(bmp, new Rectangle(0, 0, destWidth, destHeight),
Rectangle(0, 0, sourceWidth, sourceHeight), GraphicsUnit.Pixel);
grPhoto.Dispose();
Some of these method run in 20ms and some in 80. Is there a way to do it faster?
