[Gimp-user] what is dpi, ppi and lpi
Hi, Can anyone tell me the difference between dpi, ppi and lpi ? If my intention is to print a picture measuring 8"x10", at what resolution should I scan ? Thanks Amit Get fast and easy Internet access through http://www.netkracker.com ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] what is optical resolution
Hi, Can anyone explain to me what optical resolution means. I am looking at the product specification of an Epson scanner and it says that the optical resolution is 1600x3200 dpi. What does this mean ? The software that comes with the scanner I have gives me a choice to scan upto 9600 dpi. How do I know whether this value is the optical resolution or the software interpolated resolution ? Thanks Amit Get fast and easy Internet access through http://www.netkracker.com ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] Re: gimp-by-color-select trouble
If I change the last parameter to gimp-by-color-select (sample-merged) to false, then it works. Now if I can figure out how to put all the hair that I pulled out back in, I'll be in good shape. /Nathan. On Thursday 11 April 2002 11:43 am, Nathan Hackett wrote: > I am writting a script-fu that uses the gimp-by-color-select function. The > trouble I am having is that the function only works the way that I expect > when the drawable that I pass to it has an open display. If the drawable > has no open display then the result is that it selects the entire image, > not just the color that I want. > > Example - > > The following script works as predicted: > > (define (redglow inImage inLayer) > (let* > ( > ; define local vars >( >(thePaste) >(bounds) >(x) >(y) >) > ; the script > (gimp-by-color-select inLayer '(255 255 80) 60 2 1 0 0 1) > (set! bounds (gimp-selection-bounds inImage)) > (set! x (cadr bounds)) > (set! y (caddr bounds)) > (gimp-edit-copy inLayer) > (gimp-selection-grow inImage 2) > (gimp-selection-feather inImage 4) > (gimp-palette-set-background '(255 80 255)) > (gimp-edit-fill inLayer 1) > (set! thePaste (car(gimp-edit-paste inLayer 0))) > (gimp-layer-set-offsets thePaste x y) > (gimp-floating-sel-anchor thePaste) > ) > ) > > However, the following script does not produce the same result: > > (define (redglow inImage inLayer) > (let* > ( > ; define local vars >(theImage (car (file-png-load 0 "buttons/n_button_0_2.png" > "buttons/n_button_0_2.png"))) >(theLayer (aref (cadr (gimp-image-get-layers theImage)) 0) ) >(thePaste) >(bounds) >(x) >(y) >) > ; do it > (gimp-by-color-select theLayer '(255 255 80) 60 2 1 0 0 1) > (set! bounds (gimp-selection-bounds theImage)) > (set! x (cadr bounds)) > (set! y (caddr bounds)) > (gimp-edit-copy theLayer) > (gimp-selection-grow theImage 2) > (gimp-selection-feather theImage 4) > (gimp-palette-set-background '(255 80 255)) > (gimp-edit-fill theLayer 1) > (set! thePaste (car(gimp-edit-paste theLayer 0))) > (gimp-layer-set-offsets thePaste x y) > (gimp-floating-sel-anchor thePaste) > ) > ) > > Unless I add "(gimp-display-new theImage)" before the call to > gimp-by-color-select, then it works again. This solution is not optimal > since I am hoping to run this in batch mode with no displays. > > I have searched gimp.org deja.com etc., but I can't find any reference to a > similar problem. Any hints on what I am doing wrong would be much > appreciated. > > I am using gimp 1.2.2 from the FreeBSD 4.5 ports collection. > > Thanks, > > /Nathan. ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] gimp-by-color-select trouble
I am writting a script-fu that uses the gimp-by-color-select function. The trouble I am having is that the function only works the way that I expect when the drawable that I pass to it has an open display. If the drawable has no open display then the result is that it selects the entire image, not just the color that I want. Example - The following script works as predicted: (define (redglow inImage inLayer) (let* ( ; define local vars ( (thePaste) (bounds) (x) (y) ) ; the script (gimp-by-color-select inLayer '(255 255 80) 60 2 1 0 0 1) (set! bounds (gimp-selection-bounds inImage)) (set! x (cadr bounds)) (set! y (caddr bounds)) (gimp-edit-copy inLayer) (gimp-selection-grow inImage 2) (gimp-selection-feather inImage 4) (gimp-palette-set-background '(255 80 255)) (gimp-edit-fill inLayer 1) (set! thePaste (car(gimp-edit-paste inLayer 0))) (gimp-layer-set-offsets thePaste x y) (gimp-floating-sel-anchor thePaste) ) ) However, the following script does not produce the same result: (define (redglow inImage inLayer) (let* ( ; define local vars (theImage (car (file-png-load 0 "buttons/n_button_0_2.png" "buttons/n_button_0_2.png"))) (theLayer (aref (cadr (gimp-image-get-layers theImage)) 0) ) (thePaste) (bounds) (x) (y) ) ; do it (gimp-by-color-select theLayer '(255 255 80) 60 2 1 0 0 1) (set! bounds (gimp-selection-bounds theImage)) (set! x (cadr bounds)) (set! y (caddr bounds)) (gimp-edit-copy theLayer) (gimp-selection-grow theImage 2) (gimp-selection-feather theImage 4) (gimp-palette-set-background '(255 80 255)) (gimp-edit-fill theLayer 1) (set! thePaste (car(gimp-edit-paste theLayer 0))) (gimp-layer-set-offsets thePaste x y) (gimp-floating-sel-anchor thePaste) ) ) Unless I add "(gimp-display-new theImage)" before the call to gimp-by-color-select, then it works again. This solution is not optimal since I am hoping to run this in batch mode with no displays. I have searched gimp.org deja.com etc., but I can't find any reference to a similar problem. Any hints on what I am doing wrong would be much appreciated. I am using gimp 1.2.2 from the FreeBSD 4.5 ports collection. Thanks, /Nathan. ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] removing background
Nikolai, >How can I do with gimp to remove the purple color fully and convert the >borders where the object is merging with the background into pixels that has >Alpha values over yellow color instead of plain orange color ? Very nice description of a classic imaging problem. Luckily, this is precisely what the color to alpha plug-in was designed to handle. Filters | Color | Color To Alpha, select your purple color, let it run, and wholah· The major drawback is that it doesn't only operate on "border" pixels - it operates on every single pixel in the image (or current selection). This means: 1) If you have a real life background like from a photo, you probably don't have a solid color to remove 2) If your foreground has any component of the color you're trying to remove, that will be removed too. #2 is worked around by repainting "under" the image with the same color you just removed. For #1... you can keep selecting colors that don't get hit and re-running it, but my suggestion is to get it close and do the rest of the touchup by hand. Happy GIMPing, Seth Burgess [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Tax Center - online filing with TurboTax http://taxes.yahoo.com/ ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
