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Need advice on vertical stitching.


sbengadic

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Hi there, new member here, I have an interesting Photoshop project going on and think there might be a simple way to speed it up that I'm not aware of.

I have recently finished making a recording (in HD) of a player piano roll being played - for those who haven't seen one of these before, it's a long roll of paper with bars denoting the notes the piano plays.

I have used Photoshop to create pictures every 5 or so frames of the roll. Because the video is high quality and has no problems with movement, I then cropped each frame by the same amount and have thus obtained a hundred or so sections of the roll. All I need to do now is stack them vertically and stitch them together, and I should have an image of the entire roll. The amount by which they overlap each other should be fairly homogenous as the roll was moving at a steady, machine controlled speed. In other words, it would be a bit like compiling the moving end credits at the end of a movie into one large, long image file.

I know how to do this the laborious way - create a canvas of appropriate size, import all the frames into layers and manually move them - but I was wondering if there was a much quicker and easier way.

I know the panorama feature can be used for photo stitching but I'm not sure if it could be used for this purpose - certainly, it isn't able to automatically stitch any of the frames together when I've tried it though I'm probably not using it correctly.

Any help would be much appreciated.
 
I tried using this tool and it looks like I was on the right track, but it seemed to choose the order of the pictures automatically and it resulted in a muddled up stitching. All the photos I need to merge are in name and number order, so perhaps there is a simple setting I can change to get the order right?
 
well, you could try to do it like this:
first stich up the pairs, so like stich 2-3 of photo's together
then stich up those larges images together
 
well, you could try to do it like this:
first stich up the pairs, so like stich 2-3 of photo's together
then stich up those larges images together

There are about 500 frames to stitch together so that would take a long time. I'm hoping there is some way around it by adjusting the settings of the panorama tool. Otherwise I suppose I could automate a script - load all the frames as layers and select each one to reposition itself by the same number of pixels as the movement of the reel takes up.
 

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