Monday, September 24, 2012

Fixing Field Shift

Often times, compression schemes conspire to ruin your ability to discern license plate number or other important details. Sometime, tearing - or field shifting - can get in the way of producing a clear image for court or for a BOLO flyer. Thankfully, there's an easy fix.



Here we have a typical traffic camera view. The camera is positioned so license/number plate details can be captured. But, the speed of the car, with the recording technology, makes it such that quickly viewing and recognizing the plate info is not possible (or accurate).

In AmpedFIVE, the fix is easy.


From the Filter Panel, select Field Shift.



The Filter Settings allow you to nudge the fields (both Upper and Lower) both Horizontally and Vertically. The results are updated in real time. In this case, the solution is just a few clicks away.

For presentation purposes, I used the Compare Original filter, then wrote out the file to post here. I think that you'll agree, fixing field shift problems in less than a minute - in a reliable and repeatable way, one that's supported by science and academic references - is a really cool thing given our growing workloads.

Enjoy.

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