GIMP REMOVE BACKGROUND IN BMP PATCH
GIMP REMOVE BACKGROUND IN BMP WINDOWS

# Remove 68 - the size for the extra data-chunk from both headersĭata = struct.pack('I', V4_HEADER_SIZE - COLOR_INFO_SIZE)ĭata = struct.pack('I', In the meantime, use an workaround with an external program which could make the needed image conversion (or your own patched version of GIMP).Īs it is, though, the following Python function will convert the BMP version after it is exported by GIMP: import structĭef strip_color_info(old_bmp_name, new_bmp_name=None):ĭata = bytearray(open(old_bmp_name, 'rb').read())

GIMP REMOVE BACKGROUND IN BMP PATCH

Should the conversion be more complicated, the path there would be to: file a bug with GIMP project so that a programmatic call could be made for the GUI exiting option, (and preferably code the patch for that and attach it to the bug, since GIMP is a volunteer only project) and wait for a new version of GIMP featuring the change. Therefore, it is easy to write a Python solution for converting these files to the format you need. And adding a second procedure circa 2004, 2005 to support saving a file version obsoleted in 1995, would be counterproductive.įortunatelly, it is just a matter of 68 bytes that are written at the end of the V4 header - and the different offsets are recorded in jus 3 points in the file. No details of requirements given, but if transparency is needed, either an indexed png (8 bit) can be used or a gif. What you get as an indexed bmp is an 8 bit image with no transparency. An indexed BMP is not RGB and that advanced dialogue is disabled. That said, at some point, someone with GIMP hacking capabilities felt that need, and added the option for these v3 files to the export GUI - but the same person did not bother adding a second PDB call for PDB save: the file_bmp_save call itself could not be changed to have the extra 'dont_write_color_information' parameter - GIMP PDB calls are kept backwards compatible across major GIMP versions (which is like forever). IMHO the OP has answered his own question. So, I beg you to rethink where you are using BMP files that need file versions as old as Pre-windows 95 files. This method works great if your image’s background has a different array of colors than the subject you’d like to crop out. 6) (optional) Duplicate the layer using its right click menu or ctrl. 5) Clear it (press delete on the keyboard, or select clear from the edit menu). If you cant see the tool options, you can add it from the dockable dialogs submenu of the window menu.

GIMP REMOVE BACKGROUND IN BMP WINDOWS

The case is the chunk that is named as 'color space information' on GIMP BMP export filter is actually the binary difference between a version 3 BMP file, and a version 4 bmp file, which was introduced as far back as Windows 95. Method 1: Fuzzy Select Tool According to GIMP’s documentation, the Fuzzy Select Tool allows you to select areas of an image based on color similarity. 3) You may want to adjust the tool options, especially the thresold. It would however be tedious to enter the commands here, so instead we will create a simple script and show. This is essentially the same as using the Script-Fu console. This will tell GIMP to start in batch mode and accept commands on the command-line. Or if you want it to go even faster, you can totally replace a color with another by selecting the color you want to replace as color 2, cutting out the whole image with CTRL+A and CTRL+X, filling it with the color you want to replace with and pasting the image with the 'transparent selection' option activated.So - I went to check it, and indeed - this option is not available programatically at all. To give you an impression of what can be done, try the interactive console mode: gimp -b. You can also use the eraser to remove the gray spots in the background. Since there are very few colors, you can easily use the fill tool to change the green to gray for example.

I admit, like that it doesn't look so nice, but there are several easy ways to fix it so that it looks nicer: Which format you should choose depends on the image, in your case using 16-color bitmap would give this: Doing this makes there be fewer colors in the image that can be used and therefore changes the colors to the closest of these colors. You should click on File>Save As and then select Monochrome Bitmap, 16 Color Bitmap or 256 Color Bitmap as file types. You can do this using Paint by saving it as a low-quality Bitmap-image.

Gimp remove background in bmp