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Fuzzy Select

Jan 21, 2014, 06:53 (This post was last modified: Jan 21, 2014 07:29 by billybag.)
Post: #1
Fuzzy Select
i tried restarting gimp but it did not fix my problem. All of a sudden, out of nowhere, my fuzzy select tool selects WAY too much even at a threshold of 1. at 2 it just selects the whole picture.

Re-installing did not fix.

Any ideas?

i am creating black/white based icons. So it is a 48x48 image. i am mainly trying to fuzzy select black, white, and transparent selections. As you can guess, it has become impossible now and i don't know what i did.

EDIT: Okay so it actually isn't selecting "too much" per-say. i willt ry and explain the best i can here:

Black and white image with the exception of some shades inbetween.
Select fuzzy select and put threshhold at 1. Click. Selects all the white (i actually think it misses some). i hit SHIFT and click on a pixel that is slightly not white. VERY SLIGHTLY. In fact, it may actually be white. It fuzzy selects EVERYTHING.

Another example on an image that is Black and Transparent (with shades inbetween)
Slect black on threshold 1. It selects All the black AND all the shades inbetween. Eveything except flat out transparent. i hit CTRL and select a shad einbetween and it deselects everything.

EDIT 2: Doesnt matter the threshold apparently. It will do this on any.

EDIT 3: The solution, after all, was so save these problematic images as JPG and then open them as the JPG.
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Jan 21, 2014, 23:28
Post: #2
RE: Fuzzy Select
Yeah i made sure of that. i didnt bother to keep experimenting though after i found that saving it as JPG and reopening it fixes the problem. the only drawback to this is the degradation of quality.
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Jan 22, 2014, 00:22
Post: #3
RE: Fuzzy Select
(Jan 21, 2014 23:28)billybag Wrote:  Yeah i made sure of that. i didnt bother to keep experimenting though after i found that saving it as JPG and reopening it fixes the problem. the only drawback to this is the degradation of quality.

There may also be a discrepancy in edges. Try using a threshold layer to make the selection with the fuzzy tool.

Duplicate your image layer.
Colors > Threshold...
Adjust to where you can see a solid black and whilte (either black object white background, or white object/ black background.) as best possible.
Click ok
Then paint with foreground & background (white/black) to clean up stray pixels)
Then click the threshold layer with the fuzzy select.

Turn off the layer or delete the threshold layer, then you have your selection.

I made a tutorial on how to do this I call it a threshold mask. What you want the threshold layer to look like is in the second image on the left side. (solid black & white)
http://gimpforums.com/thread-selecting-f...7#pid21197
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