Sent: 2012-01-23 22:45:23 UTC (4 months ago)

From: NoviceGimper

Help with colouring book stamp type images

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Hi there again

I want to make colouring book pictures for my students from photographs of themselves (want to see kids get excited about something - give them a picture of themselves to colour in). Right now I am using the cartoon filter, desaturating the image and then painstakingly selecting by colour, each greyscaled set of pixels and then cutting them so that in effect, the image becomes a traced black and white image. I am wondering if there is an easier way to do this - I have tried using the threshold and levels filters - but I find that it makes the image too pop-arty, like those Che Guevara type T-shirt graphics. Ideally I want to literally make the image look like colouring book picture or a stamp. Is there an easier way to do that without having to pick and delete the greyscaled parts of the image? Any help would be appreciated.
Thanks
Candice

NoviceGimper (via gimpusers.com)

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Sent: 2012-01-23 22:54:19 UTC (4 months ago)

From: Chris Mohler

Help with colouring book stamp type images

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On Mon, Jan 23, 2012 at 4:45 PM, NoviceGimper wrote:
> deally I want to literally make the image look like colouring book picture or a stamp.

Try:

Filters->Edge Detect->Edge...
Use defaults, click OK
Image->Mode->Grayscale
Colors->Invert

Possibly adjust Levels/Curves afterward.

HTH,
Chris

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Sent: 2012-01-23 23:14:13 UTC (4 months ago)

From: Seth Burgess

Help with colouring book stamp type images

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I've done this for pictures of my family - my daughter loves coloring us.
It works best on pictures without a lot of noise to them, but my "recipe"
assuming a flattened (1 layer) image is:

1) Blur->Selective Gaussian Blur - use parameters to get rid of details but
keep main subject sharp
2) Colors->Desaturate (I usually use Average, but not sure it matters)
3) Edge-Detect->Difference of Gaussians with about 8/33 as the 2 radiuses
gets me some basic lines that work good for this on SLR-size photos, use
smaller for values near the same ratio for smaller pictures. Goal is to
get an outline of the salient features only.
4) Colors->Levels... to make sharp black lines
5) Blur slightly if necessary
6) Save As.. & Print
7) Open box of crayolas and go nuts

If you want to do more of a fake-crayon drawing to wow your friends, change
the levels step to have very light grey output instead of dark black; then
trace the light grey with heavy crayon before coloring in/shading with
lighter shades. As a bit of warning, eyeballs and cheekbones are amazingly
hard to get right!

Happy GIMPing,

Seth Burgess

On Mon, Jan 23, 2012 at 4:54 PM, Chris Mohler wrote:

> On Mon, Jan 23, 2012 at 4:45 PM, NoviceGimper
> wrote:
> > deally I want to literally make the image look like colouring book
> picture or a stamp.
>
> Try:
>
> Filters->Edge Detect->Edge...
> Use defaults, click OK
> Image->Mode->Grayscale
> Colors->Invert
>
> Possibly adjust Levels/Curves afterward.
>
> HTH,
> Chris
> _______________________________________________
> gimp-user-list mailing list
> gimp-user-list@gnome.org
> http://mail.gnome.org/mailman/listinfo/gimp-user-list
>

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Sent: 2012-01-25 15:57:14 UTC (4 months ago)

From: NoviceGimper

Help with colouring book stamp type images

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Thanks Chris!

>On Mon, Jan 23, 2012 at 4:45 PM, NoviceGimper wrote:
>> deally I want to literally make the image look like colouring book picture or a stamp.

>Try:

>Filters->Edge Detect->Edge...
>Use defaults, click OK
>Image->Mode->Grayscale
>Colors->Invert

>Possibly adjust Levels/Curves afterward.

>HTH,
>Chris

NoviceGimper (via gimpusers.com)

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Sent: 2012-01-25 15:58:58 UTC (4 months ago)

From: NoviceGimper

Help with colouring book stamp type images

permalink

Thanks Seth -
Candice

>I've done this for pictures of my family - my daughter loves coloring us.
> It works best on pictures without a lot of noise to them, but my "recipe"
>assuming a flattened (1 layer) image is:

>1) Blur->Selective Gaussian Blur - use parameters to get rid of details but
>keep main subject sharp
>2) Colors->Desaturate (I usually use Average, but not sure it matters)
>3) Edge-Detect->Difference of Gaussians with about 8/33 as the 2 radiuses
>gets me some basic lines that work good for this on SLR-size photos, use
>smaller for values near the same ratio for smaller pictures. Goal is to
>get an outline of the salient features only.
>4) Colors->Levels... to make sharp black lines
>5) Blur slightly if necessary
>6) Save As.. & Print
>7) Open box of crayolas and go nuts

>If you want to do more of a fake-crayon drawing to wow your friends, change
>the levels step to have very light grey output instead of dark black; then
>trace the light grey with heavy crayon before coloring in/shading with
>lighter shades. As a bit of warning, eyeballs and cheekbones are amazingly
>hard to get right!

>Happy GIMPing,

>Seth Burgess

>On Mon, Jan 23, 2012 at 4:54 PM, Chris Mohler wrote:

>> On Mon, Jan 23, 2012 at 4:45 PM, NoviceGimper
>> wrote:
>> > deally I want to literally make the image look like colouring book
>> picture or a stamp.
>>
>> Try:
>>
>> Filters->Edge Detect->Edge...
>> Use defaults, click OK
>> Image->Mode->Grayscale
>> Colors->Invert
>>
>> Possibly adjust Levels/Curves afterward.
>>
>> HTH,
>> Chris
>> _______________________________________________
>> gimp-user-list mailing list
>> gimp-user-list@gnome.org
>> http://mail.gnome.org/mailman/listinfo/gimp-user-list
>>

NoviceGimper (via gimpusers.com)

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