MESSAGE
| DATE | 2021-03-26 |
| FROM | From: =?utf-8?q?Zolt=C3=A1n_Kluik_via_gimp-user-list?=
|
| SUBJECT | Re: [Hangout - NYLXS] [Gimp-user] Change background colour with
|
Hi Liam,
I got it. First I need to select Image-->Crop to selection and after that
Image--> Crop to content.
I'm really appreciate Your help, you can made easy my feature photo
editing.. Thank You very much for it!
Regards, Zoltan
Zoltán Kluik ezt írta (időpont: 2021. márc. 27.,
Szo, 0:31):
> Dear Lim,
>
> Wow, with this fuzzy tool it works excellent. You write so exactly and
> precise, also it is really very fast process. I was blind that I wanted to
> do only with foreground selection tool. This is better what You said
> I have only point 9 which is not working. When I do Image --> Crop to
> content or Zealous crop the GIMP said: Cannot crop because the image is
> already cropped to its content. (Here the background is white and on the
> picture there is only the coin.)
> Thank You for Your help in advance.
>
> Zoltan
>
> Liam R E Quin ezt írta (időpont: 2021. márc. 26., P,
> 0:09):
>
>> On Thu, 2021-03-25 at 17:24 +0100, Zoltán Kluik wrote:
>> > Dear Liam,
>> >
>> > Yes, the image is in RGB colour 8 bit.
>> > What does it mean?
>>
>> Colour means as opposed to greyscale (just grey, no colur allowed).
>>
>> RGB means that any pixel can be in any colour, as opposed to indexed
>> which would mean a fixed list of colours
>>
>> 8-bit means each of red, green, blue (RGB) can take any whole number
>> value from 0 to 255 - this is appropriate for JPEG images for example.
>>
>> With the following image I did this:
>>
>> (1) open the image in gimp
>> (2) select the Fuzzy Select tool from the toolbox
>> (3) in Tool Options, make sure the threshold is good - i used 13. The
>> higher this number ,the more the Fuzzy Select tool will select colours
>> that are not quite the one you click on.
>> (4) i clicked on the green background 9still with fuzzy select). This
>> selected eveything except the coin.
>> (5) i used select->grow to increase the selection by 2 pixels. This
>> makes sure that if e.g. there's a pet hair in the picture, it gets
>> selected out. But this also selects the edge of the coin, which we
>> don't want.
>> (6) then, i did Select->shrinl and entered 1 pixel, to get back the
>> edge of the coin.
>> (7) Probably we don't want an ugly hard edge so i used Select->Feather
>> by 1.5 pixels to soften the edge of the selection.
>> (8) i did edit->cut (or Control-X), to remove the green. If you don't
>> have the default black and white colours selected in the two small
>> panels under the toolbox, press d to reset them to defaults and then
>> do cut.
>> (9) then i did Image->Crop to Content, to get rid of the extra white
>> areas.
>> (10) finally i exported the image.
>>
>> This is much faster to do than to describe. Maybe ten seconds at most.
>>
>> Just before exporting ,i actually also used Colours->Levelsand pressed
>> Auto Input Levels; you may not want that; it makes the dark parts of
>> the image black. You can get a better result by including a photo card
>> (you can get them on ebay or from any photography shop) in the picture
>> and using the white and the black as white and black points in Levels.
>> It's pretty much instant although then you have to crop the photo card
>> out of the picture.
>>
>> Interesting coin.
>>
>> slave liam (ankh)
>>
>>
>> >
>>
>> --
>> Liam Quin - web slave for https://www.fromoldbooks.org/
>> with fabulous vintage art and fascinating texts to read.
>> Click here to have the slave beaten.
>>
>
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