![]() The results is left over on a clear background, ready to composite. I'm assuming you have a set of graphic images in front of a bluescreen. Batch mode in GIMP requires a whole new learning curve. Python waits for the conversion to finish before doing the next loop. It is just that I prefer the script with ImageMagick libraries because it is customizable. Besides Imagemagick, there is python-vipscc - both libraries are in the repositories for Gutsy. Deleted selected areas (I see transparency in GIMP) Saved as. Layers > Transparency > Add Alpha Channel. That is: using a Terminal, if we have ImageMagick installed, we can typeĬonvert filename.tif xc:none -fill "RGB(rr,gg,bb,aa)" alpha_filename.pngĬonvert alpha_filename.png –channel matte –negate –separate clear_mask_filename.pngĮach time for each filename to do the conversion, or use a Python script that will do a wildcard for the files (and renaming). Here are the steps I done: Opened PNG (not transparent) Selected white areas that I want to make transparent. # let the os.system accept the string as a terminal command # code is a string with two string placeholders #split the filename again to make a name +. 'convert' is the command, a file.jpeg to a file.gif """ imagemagick (not part of python) wants: COMMAND filename filename # we want the portion of the string at the "." # in this case, we're looking for file_xx.JPG # take each dlist element, split it where period is # use an itenerator, look at every item in list dlist # make an empty list var that will be a command-line list In this case the (.) directory, or cwd - current working directoryĪnd where is the location of launching and running the script. jpeg and I want to convert the whole folder of. In this case, the images are a folder of my digital camera. use a console window, > cd into that folder and run python photo_convert.py. Put this script inside a folder of images. Manipulation software that is especially good doing bulk operations. With Python and ImageMagick I do this all the time:Ī command-line tool to use imagemagick-lib, a free, open-source image For an excellent book on the features of ImageMagick, check out "ImageMagick Tricks" The GIMP Batch Mode is accomplished by putting a lot of options and all of the options together on one statement. Using the command line with a Python script just seems more straight-forward. I just want to know what does it, in case it matters for some touchy operation.I, also like the ImageMagick libraries. Next time I GIMP around I should take notes and experiment. I think that saving the color value of transparent pixels might have something to do with it.I don't know what PS has for options any more, it's been an age since I played with it. I think that with some variations in background/foreground colors and save settings, I could reproduce the Photoshop foibles. It only matters when transparency is not enabled. Select Open from the drop-down menu and select the photo with the layers you want to make transparent from your device. This image looks perfect in IV with transparency enabled, except for a couple of white pixels (feature! never would have seen them otherwise), but there are still blocks of slightly, invisibly different pixels. Then I "poured" black into the white part, and the subtle differences jumped out. The first shot shows that I screwed up and used a different background color after enlarging the canvas by a few pixels (the black edges). I opened it in MS Paint (the ultimate non-transparent editor LOL). When they all look all right, there's no problem in sight, right?Īttached are two screenshots of part of a transparent PNG that i made this morning with the GIMP. I said before that I haven't had any problems with the GIMP's PNG saving - but I seldom open a transparent PNG in non-transparent mode. While working on a website header image today, I decided that I would consider the phenomenon as a feature. Returno … You following along, is this helping any ? I don’t believe I just said that … Please forgive my foul language :-) Windows Image n Fax viewer sees my png OK … Haven’t tried the Vista version yet. I’ve tried 3.99 and 4.0 (with the gif fix) … and used two different Puters (processors) I’ve looked in IV’s options and can’t find any settings to cure this. ![]() If there’s nothing wrong with the png … Then why can’t IV see it correctly ? This looked great on my end … but had some shirt printing problems. In this tutorial Ill show you how to create a transparent background in Gimp using the Select by Color Tool.img used. I originally converted to a gif - then the gif to png in PS. Someone else did this and I don’t know their procedures. I’ve poked around in the PS CS2 options and can’t find any applicable settings. ![]() ![]() Seems like some can save a png from PS without any apparent IV viewing problems. I’m getting conflicting answers … or test results.
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