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Subject:	Re: Software to merge video frames to obtain higher quality stills?
Newsgroups:	lugnet.publish
Date:	Wed, 12 Apr 2000 08:57:23 GMT
Viewed:	550 times

In lugnet.publish, Fredrik Glöckner writes: > I'm not sure what you mean by "merge", but if you mean take the > average of a series of images, this can be done with Image Magick. > The command line tool "convert" can be used like this: > > % convert -average input1.png input2.png ... inputn.png outpu1.png Thanks - I'll give it a try! I think what I'm after is something a bit smarter - that expects to find random 'grain' and filters it out. Assuming that if you have 10 frames (taken successively of a static scene with stable lighting), each with a random 'grain' distribution - it is possible to work out what is grain, by comparing surrounding area's and by comparing the same locations on the other frames. I'll keep on searching, and post back if I find anything. Richard

Message has 1 Reply:

		Re: Software to merge video frames to obtain higher quality stills?
(...) well, averaging under those conditions will probably be the easiest and a very good way of going at it. If you're really trying to go overboard, it's not that hard to write a matlab program to filter out single pixle noise, using a simple 3x3 (...) (24 years ago, 12-Apr-00, to lugnet.publish)

Message is in Reply To:

		Re: Software to merge video frames to obtain higher quality stills?
(...) I'm not sure what you mean by "merge", but if you mean take the average of a series of images, this can be done with Image Magick. The command line tool "convert" can be used like this: % convert -average input1.png input2.png ... inputn.png (...) (24 years ago, 11-Apr-00, to lugnet.publish)

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