How to set images format when using Aforge Library.

FiltersSequence filters = new FiltersSequence();
IFilter blurFilter;

blurFilter = new AdaptiveSmoothing(3.0);
filters.Add(blurFilter);

IFilter resizeFilter = new ResizeBilinear(width, height);
filters.Add(resizeFilter);

Bitmap newImage = filters.Apply(image);
image.Dispose();
image = newImage;