Thursday, May 8, 2008

Zoom Level for Sharpening

Many Forensic Video Analysts are now stuck working with images from video that are in the CIF and QCIF range. Sharpening these images can be an exercise in futility.

But what about multi-megapixel images? When dealing with images that are over 2000 pixels in any one direction, try dialing back the zoom level to 50%. At this level, you'll get just the right amount of detail (though you may want to jump up to 100% to check noise in the midtones/shadows and back again).

1 comment:

Steve Upperman said...

Hi Jim,

I would suggest doing the sharpening at a 100% view. If you need to see the whole image check it at 50%. Be aware of alias issues at view sizes other than multiples of 100%.