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Archive for the ‘Tutorial’

Sphere using GIMP

January 25, 2009 By: Dexter Category: GIMP, Tutorial

Here is a small tutorial which will tell you how to create a sphere using GIMP. Ok so here we go.

  1. Start with a small blank gimp canvas. Around 300×300 px
  2. Using the Elliptical Select Tool , select a circular region. To select a circular region, in the options of the Elliptical select tool, Fixed — Aspect Ratio, this will allow you to do a circular select. See IMAGE 1..
  3. Now select a color for your sphere. I have chosen a dark green.
  4. Next select the Blend Tool ( IMAGE 2) for gradient fill. In this select the Shape as Radial. See IMAGE 2.
  5. Change the direction of the gradient by clicking the check box next to the gradient. See IMAGE 2
  6. In the selected circular area, select a point in it using the gradient tool and drag it diagonally. See IMAGE 3.
    Try out different starting points for the gradient fill. You will get different effect for the sphere.
  7. You sphere should be ready now. See IMAGE 4.
  8. To make it look a more real, drop a perspective shadow to it using the shadow filter. Filters — Light and Shadow — Perspective. You will probably need to change the angle according to your requirements so that the shadow falls opposite to the light, i.e the bright area on the sphere. See Image 5.
Circular selection

IMAGE 01: Circular selection

Blend Tool and its options

IMAGE 02: Blend Tool and its options

Blend Fill from inside out

IMAGE 03: Blend Fill from inside out

IMAGE 04: After the blend fill the image looks like a sphere.

IMAGE 04: After the blend fill the image looks like a sphere.

IMAGE 05: Final sphere with shadow.

IMAGE 05: Final sphere with shadow.

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Fingerprint using GIMP

January 20, 2009 By: Dexter Category: GIMP, Tutorial

Nothing much has happened in last few days. Was playing around with GIMP when I decided to try out making a finger print like effect. Follow the steps and probably you will get a fingerprint ready for yourself.

  • Start with a small blank gimp canvas.
  • Using the Elliptical Select Tool, select a oval region and fill it with some dark color. This color represents the ink which is used to the finger print mark. You should get something similar to IMAGE 1
  • Run the Noise – Pick (Filters — Noise — Pick) filter on the select oval area. This removes some pixels from here and there, converting your oval to a distorted one. See IMAGE 2
  • Next run the filter Erase Every Other Row (Filters — Distort — Erase every other row) on your image. Make sure you have selected the rows/cols option to rows. You should get something similar to IMAGE 3.
  • Now select the oval area again using the elliptical select tool.
  • Use filter Iwarp on this. (Filters — Distort — Iwarp).
  • Play around will different values and options of Iwarp, I used small Deform Radius and small amount of Deform Amount. and opted for Deform mode as Swirl CCW and Swirl CW. You just have to move the mouse across the image shown in the upper left corner of the dialogue box. And best part is the changes are not immediate, it has a reset button which restores the image back to its basic state.
  • Iwarp dialogue box
  • IMAGE 05 - I warp dialogue box

  • Play around with the image, once you are happy with your finger print, click on ok to finally apply on the original image.
IMAGE 01 - Finger Print basic

IMAGE 01 - Finger Print basic

IMAGE 02 - After using pick filter Filter

IMAGE 03 - After applying Erase every other row

IMAGE 03 - After applying Erase every other row

IMAGE 06 -  final finger print after applying the Iwarp filter.

IMAGE 06 - final finger print after applying the Iwarp filter.

And remember whatever you do, whenever you try this out again … you will not get the same finger print again. As it is know no two finger prints are identical. ;)

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3 step conversion of photo to canvas painting using GIMP

January 12, 2009 By: Dexter Category: GIMP, Tutorial

Ok after posting the images had to do something.. had been feeling itchy and had to do something about it.. So here we go with another simple tutorial.. of A 3 step conversion of a photo to a canvas painting and of course using my favorite GIMP .

Step One

Take your basic image. I have taken a moon shot which I had taken recently.

I will be using IMAGE 1 as my base.

IMAGE 1

IMAGE 1

Step Two

On the image use the canvas filter: Filters => Artistc => Apply Canvas.

You should now have your image having a similar effect as in IMAGE 2.

IMAGE 2

IMAGE 2

Step 3

And finally apply cubism filter.: Filters => Artistc => Cubism.

In the cubism dialogue box: select  smaller tile size and smaller value of tile saturation

I have use tile size 0.8 and tile saturation 1.8

IMAGE 3

IMAGE 3

And you oil painting is ready… and looks a bit old too… ;)

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Adding Shadow Behind Text with GIMP

January 05, 2009 By: Dexter Category: GIMP, Tutorial

In my early previous post Adding Shadow To Text with GIMP, the shadow drops in front of the text.
In this post I will show you how to drop shadow behind the text. This one is a bit tricky since you will have to work with layers. If you do not know what layers are click here

  • Start with a blank canvas. Add the required text. (preferably use a bigger canvas size, its easier to move text around for placement. later you can crop the image to required size,..)
  • Add some text to it.
  • You should get something like IMAGE 1
  • Select the text (try using the fuzzy select tool if required), press ^c to copy the selection.
  • Paste this selection on the canvas, a bit away from the original image. IMAGE 2
  • Do not click the mouse any where, here press ctrl+l, this should give you layer dialogue box  see IMAGE 3.
  • You should see one of the layers as floating selection, click on button of the lower left corner of this dialogue box.() You will have a new layer.
  • Here select the original layer, (the one with the white background), select the original text using the fuzzy select tool (you will probably need to invert selection by pressing ctrl+i)
  • Now from resize the text i.e stretch it from the tools — transform tools — scale. Only scale it vertically. See IMAGE 4.
  • After you have applied scaling, Shear the text in similar manner to give it a slant. tools — transform tools — shear.
  • You should have something similar to IMAGE 5.
  • To make it look a bit realistic preform a Gausian blur on the shadow. Filters — Blur — Gausian Blur.
  • From the layer dialogue box, reduce the opacity of this layer, because the shadow has to go behind the text. IMAGE 6
  • Now place this final text with the base line behind the original text. IMAGE 7
  • Save your image. Your text with shadow behind is ready.
Text Shadow

IMAGE 1: Basic Text

Text Shadow

IMAGE 2: Copy of text in new layer

Layer dialogue box

IMAGE 3: Layer dialogue box

Text Shadow

IMAGE 4: Stretched Text (verticallly)

Text Shadow

IMAGE 5: Skewed Text

IMAGE 5: Skwed Text with less opacity and blurring.

IMAGE 6: Skewed Text with less opacity and blurring.

IMAGE 7: Final Text with shadow behind it.

IMAGE 7: Final Text with shadow behind it.

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