how do i ?
Branko Collin
03:38:29 +0000:
>how do i smooth out grossly pixelised edges caused by increasing layer size (or
>image size)without, for instance, manually smudging ?
[...]
>http://www.sende.freeserve.co.uk/alien.html)
>
>-and doesn't matter in that pic, but in sharp graphics such as alien i don't want the
>smudging, either by hand or through blurring, and, sharpening increases the problem,
>is there a solution, given that i can't increase the pixel sixe of the
>original ?
There are no silver bullets here. You'll have to go in and change the
offending pixels by hand. There is no way the computer can always
guess what color pixels it has to insert when enlarging an image.
>then, how do i, or can i get,more depth in a picture, as in the 'wings'
>on alice are flat, is there any way to render them more 3d, ie through
>bump-mapping or something ?
I am not sure exactly what effects you are trying to achieve.
Here are some tutorials for fake 3D effects using the GIMP, though:
<http://www.linuxfocus.org/English/July2000/article113.shtml>
>then, sometimes i prefer the image when one of the colour channels has
>been turned off, but i cannot copy and paste the image into a new window
>as it will only copy the picute with all channels. is there a way to
>permanently switch off or delete one particular colour channel in an image
>without it going completey pale or dark ?
I don't know why this is not possible, but you should be able to get
the same effect using the <Image>/Image/Colors/Color Balance ... tool.
>then ,why can i not bucket or pattern fill on a clear layer ?
Select All first.
--
branko collin
col...@xs4all.nl
Branko Collin
01:55:08 +0000:
>On Sun, 10 Nov 2002 01:02:53 +0000, Branko Collin wrote:
>> sam ende <s...@sende.freeserve.co.uk>, you wrote on Sat, 09 Nov 2002
>
>
> but in sharp graphics such as alien i
>>>don't want the smudging, either by hand or through blurring, and,
>>>sharpening increases the problem, is there a solution, given that i
>>>can't increase the pixel sixe of the original ?
>>
>> There are no silver bullets here. You'll have to go in and change the
>> offending pixels by hand. There is no way the computer can always guess
>> what color pixels it has to insert when enlarging an image.
>
>i was just wondering if there were
>techniques available of which i was not aware seeing as i am relatively
>new to gimp and graphical work, but, thankyou. i tried, for instance, as
>the fractals are monochrome, both sharpening and blurring. i then thought
>of decomposing the image and sharpening/blurring the black level, didn't
>work either, ah well.:)but then i just thought what i haven't tried yet
>but will do is to select by colour with a suitable (as in more curved)
>threshhold and then do that all black, or something. will try that then.
Why don't you just render bigger fractals? Always try to get optimal
originals, because every image editing step you will lose information.
Did you try the GIMP's built-in fractal tool?
>>>then, how do i, or can i get,more depth in a picture, as in the 'wings'
>>>on alice are flat, is there any way to render them more 3d, ie through
>>>bump-mapping or something ?
>>
>> I am not sure exactly what effects you are trying to achieve.
>
>me neither, just wasn't happy with what i came up with, the result i
>mean;it looks flat.
There's a mailing list for GIMP artists, called gimpi. It can be found
at <http://groups.yahoo.com/group/gimpi/>. Some of the best tutorial
writers hang out there, I am sure they could help you with specific
techniques for specific problems.
>> but you should be able to get the
>> same effect using the <Image>/Image/Colors/Color Balance ... tool.
>
>i tried that but you can't reduce/eliminate a single colour without
>increasing another ? ie to reduce blue you increase the yellow, and thats
>not what i really want, or its not the same, unless i'm doing it wrong ?
If you reduce blue, you automatically increase yellow. I don't see the
problem in that. That is also what happens if you switch off the blue
channel.
I tried to get an exact copy of an image with the red channel switched
off using the Color Balance tool and succeeded. I had to deselect
"Preserve Luminosity" in the tool's dialog window, and turn off red
for Shadows, Mid Tones and Highlights to get the right result.
This may sound a bit of a round-about way to achieve your goal. There
is probably an easier way, but I never play around with channels
myself. I am not an artist, I am a web page builder who sometimes has
to cut up images for the web or color correct a photo.
>>>then ,why can i not bucket or pattern fill on a clear layer ?
>>
>> Select All first.
>
>no, it doesn't work, well not for me. i put a new clear layer on an
>image, normal mode, select all and neither bucket or pattern fill work
>on that clear layer (and i've tried it with the 'keeep transparent' button
>'on' and 'off') and, i would like it to work because
Sometimes selection related stuff does not work for me either, and I
have yet to figure out why. It may just be a GIMP for Windows related
problem. Just try again, switch tools, deselect, whatever.
>then you could do a layer with a gradient or pattern fill and then play around
>with the modes and transparency levels in the layers box rather than
>having to work through the options sequentially in the individual tool option
>thingy because the tool option thingy for bucket and pattern fill do not
>allow you to change modes as the layers thing does, if that makes any
>sense ?
Well, the bucket fill tool does support layer modes. Maybe I don't
understand what you mean.
--
branko collin
col...@xs4all.nl
Branko Collin
00:16:24 +0000:
>On Sun, 10 Nov 2002 13:46:18 +0000, Branko Col..lin wrote:
>
>> This may sound a bit of a round-about way to achieve your goal. There is
>> probably an easier way, but I never play around with channels myself. I
>> am not an artist, I am a web page builder who sometimes has to cut up
>> images for the web or color correct a photo.
>
>first, despeckle, as the blue channel is the channel that has the most
>faults in photos, unfortunately i cannot remember where i read this to look
>this up again, have you any idea what was meant or how it is done ?
No, I am sorry. I have heard that photographers use color filters even
for black & white photography, because apparently different filters
give different effects. I don't know if that is related.
>>>then you could do a layer with a gradient or pattern fill and then play
>>>around with the modes and transparency levels in the layers box rather
>>>than having to work through the options sequentially in the individual
>>>tool option thingy because the tool option thingy for bucket and pattern
>>>fill do not allow you to change modes as the layers thing does, if that
>>>makes any sense ?
>>
>> Well, the bucket fill tool does support layer modes. Maybe I don't
>> understand what you mean.
>
>yes, it does, but what i like to do is make a layer and then switch modes
>to see which mode looks best, with the gradient and pattern fill tool you
>have to select your mode and then apply it, if you don't like it you have
>to undo it and try the next mode, you cannot simply switch it from one
>mode to another once applied.
Well, that's indeed what layers are for. :-)
--
branko collin
col...@xs4all.nl