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Copyfault
Registered: Dec 2001
Posts: 466 |
GFX-preconditioning for conversion
At the moment I'm fiddling with some interlaced gfx mode. In order to create some 'proof-of-concept'-release, I need gfx data (no wonder;))
For this I would like to use a convertor. As the convertor tool only outputs nolace pictures I was thinking about preconditioning the gfx in the following way: take a given BMP, omit every 2nd pixel column (e.g. the 'odd' ones) and "crunch" the other pixel columns to a new bmp of half x-size. Do the same procedure again with the 'even' pixel columns. Convert both BMP separatly and glue the resulting C64-pictures.
Does anyone know if such kind of other-platform-tool exists that can 'skip' pixel columns (or pixel lines, or even a given pixel pattern) of a given BMP (or similar gfx formats)? |
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Oswald
Registered: Apr 2002
Posts: 5017 |
you just need to resize to 50% and then to 200%, only make sure the editor will not optimize the picture. to get the other columns crop 1 pixel. |
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WVL
Registered: Mar 2002
Posts: 886 |
Another way :
draw some vertical lines in photoshop in another layer (by copy/paste you can double the amount of lines each time you copy). Then you can make a selection of only the color of the vertical lines, switch to your gfx layer and copy the odd/even lines separately. (then you can move 1 pixel, and paste, et voila : a picture with only odd or even lines) |
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doynax
Account closed
Registered: Oct 2004
Posts: 212 |
You can try this tool if you've already done the VIC-palette matching: http://sites.google.com/site/doynax/deinterlace.zip
Just feed it the name of a BMP file on the command line and it should spit out a pair of images (e.g. *.bmp => *_lace1.bmp + *_lace2.bmp). Or drop a file on it in explorer. |
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chatGPZ
Registered: Dec 2001
Posts: 11114 |
some video editor software should be able to extract odd and even field(s) like that.
then again, you can probably code such a tool using less keypresses than it took to write your initial post :o)
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