C#: Preserving Bits Per Plane When Resizing Images?
Sep 27, 2010
I'm developing a service in which users can upload images and save them in a library. I want to preserve the original file (so people can upload high resolution images), but also make a copy of the image to use as a thumbnail.
The problem I have is that the thumbnail "weights" much more than the original file, proportionally. When I check the basic properties of each file (in XnView), I can see that the original files are for instance saved with 32 bits per Plane, whereas the source file will have, for instance, only 24 bits per plane.
What would be the correct way to make a copy of the original file while still using compression? This is an excerpt of the code:
private void ResizeImage(string originalFile, string NewFile, int NewWidth, int MaxHeight, bool OnlyResizeIfWider, string directory)
{
System.Drawing.Image FullsizeImage = System.Drawing.Image.FromFile(originalFile);
// Prevent using images internal thumbnail
[Code]....
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[URL]
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[Code]....
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