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Monday, November 3, 2008
Resize Smaller?
I got a note asking about the magic numbers for resizing smaller, and thus improving the signal to noise ratio within an image. Here they are:
71% (.707) halves the number of pixels
50% gives you a quarter of the original pixels
Remember: use the Bilinear interpolation method so as to not introduce any sharpening at this stage.
2 comments:
Can you explain the math behind this? Is this the same for images of all bit depth?
While very useful, it seems counter intuitive so a little explanation could work wonders. Thanks.
Sure, I'll post it for today's post this afternoon.
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