Reducing the imagesize

[rajnambiar]

I am using twain and gdviewer. I need to reduce the image size. Currenlty, images are getting saved to 500K Size. I have used the following code.

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Twain1.TwainSetCurrentResolution (300)
Twain1.TwainSetCurrentPixelType (TWPT_RGB) 'RGB
Twain1.TwainSetCurrentBitDepth (8) ' 24 bpp

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Call Twain1.SaveAsJPEG(defaultDocFolder & myfilename, 75)

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I tried changing resolution from 300 to 100. But image size remains almost same (10k less).

I tried 75 to 25 in saveasjpeg. Still the size is almost same.

How do I reduce the image size to 50 percent? or 30 percent? (eg: In photoshop, I can do this by adjusting the imagesize and quality.)

[rajnambiar]

Forgo6 to mention that I am using VB6 + ActiveX !