Brad Fitzpatrick (brad) wrote,
Brad Fitzpatrick

lazyweb: image processing

Dear Lazyweb,

Given a couple hundred JPEGs, what's the most efficient way, using Free tools, to one of:

-- find the brightest file


-- find the file with the most overall contrast (not all white or all black, but a good mix of both?)

Background: got video thumbnailing working in FotoBilder, but sometimes people's videos start with some black frames at the beginning. Or bright white (presumably?) while their phone/camera CCDs adjust to outdoor sunlight and the user aims at their actual target.

So I'd like to extract the first 20-100 frames and pick the most "interesting" one, for some definition of interesting. But definitely not solid black or white.
Tags: lazyweb, tech
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