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Post #324691

Author
negative1
Parent topic
GOUT image stabilization - Released
Link to post in topic
https://originaltrilogy.com/post/id/324691/action/topic#324691
Date created
22-Jul-2008, 11:28 PM

ok, thanks to gforce, i've done a ton of testing, checking options, overlaying things etc..

but first a few preliminaries.........................i love image processing, so a lot of this stuff is very natural to me,

i also have a major in mathematics, with a specialization in analysis...algorithms/etc.....so that's how i tend to

look at things..........................................i'm not so sure about my eyesight, or aesthetics, and i'm just being

thrown into video processing/film techniques etc via the 35mm esb project................anyways.........

1) i really need to go back and REALLY understand what this script is doing , because i think it will

help everyone that doesn't understand the functions to understand some principles behind them,

if they want to improve on them

 

2)  i have only run a few tests with the gforce script, (since they're very time consuming), so i don't think

my results, or tests will be that conclusive........................that said, i've watched the first 11800 frames of ep4

about 50 times now........so i'm getting a pretty good grip on the scene changes, shots, and different types of

tests with - scrolling text, stable background-moving image, moving image-moving objects , stable background - stable objects,

with a mix of fx shots, and also different camera shots................................................(take that with a grain of salt)

 

3) i'm going to be posting images, videos, and some math stuff (hopefully won't be too scary)....................back to the idea

of putting a box around the image.........................well it worked, kind of.............but it doesn't help at all, because the image

seems to be stabilized along the x-axis, with the movement being on the inner frame..........(i'll post pictures)..............

so i'm going to go back, and overlay a GRID over the video, to show you a more precise idea of whats going on

 

4) there's some really psychedelic effects going on when you overlay the gforce version vs gout, but it does show the local effects

of the filters............................................i think the corrections due to color/grain/artifact processing overcomes the image

stabilization bit (which might not be that significant).................................................what i did was blow up the video to 150%

and watch it that way, and if you observe the frame changes that way, you can see how jittery the ENTIRE movie is .....

 

i hope you don't have to do a crop around it, and adjust all the frames.................but since i'm mapping out the scene changes

by frame..................it might be possible to localize the stability that way, not sure yet.............

 

ok, i'll start posting pictures, its much easier to discuss that way..

 

later

-1