Thursday, April 24, 2014

How to create a 4-bit(16 colors maximum) image in GIMP that sort of looks like the work of Andy Warhol's digital art.

1) Load an image in GIMP.
2) Click on "Image" menu, then "Scale Image".

3) A "Scale Image" window appears. Remember the width of the image as you'll need to rescale image to this size at a later step.
Enter a number as width (pick a small number like 100 or 150) so that when we rescale the image later it'll reveal the pixels in our image.
Click "Scale" button when done.

4) Click on "Image" menu, then "Mode", then "Indexed".

5) The "Indexed Color Conversion" window appears.
Select the "Generate optimum pallete" option. Enter 16 for the "Maximum number of colors". Then for "Color dithering:", choose "Floyd-Steinberg(normal)".
Click "Convert" button when done.

6) Click on "Image" menu, then "Scale Image".

7)A "Scale Image" window appears. This time enter original width (remembered from step 3).
Click "Scale" button when done.
And you should have a 4-bit image (Maximum of 16 colors). Here's an example image.

Wednesday, April 23, 2014

How to create a polygon art in GIMP, manually done by hand.


New improved method that uses 6 line script to aid in filling the manually selected polygon with average color is located here -> https://gimplearn.net/viewtopic.php?f=3&t=865


This post is also posted on GIMP LEARN (where you can register and share your polygon art as well).
Or search for polygon art on GIMP LEARN

1) In GIMP, load an image that you'd like to use as reference to create polygon art out of.
2) Make sure the image doesn't have an Alpha Channel. You can do so by right clicking on the layer that contains the image and click on "Remove Alpha Channel" like shown in image below.

3) Click on "Free Select Tool", then select a polygon (in this example, we're selecting a triangle by clicking on 3 points of the triangle and then click the first point to close the triangle, like shown below).

4) Click on "Color Picker Tool", then click on the middle of the polygon (selected in the above step). To get an average color sample, you can adjust how large the area of average color area will be in the options of the "Color Picker Tool".

5) Now that we have the average color (of about the middle of the polygon) selected as foreground color, we swap foreground and background color by clicking on arrow (highlighted in image below) to make that the background color.

6) Now to fill the polygon, with the background color, we simply cut away the polygon by hitting Ctrl-X (hit Ctrl key and hold it and hit X key) to cut. And the polygon will be replaced with the selected background color (since we don't have Alpha Channel in our image, it will not be transparent, this was done in step 2 to make sure it doesn't have an Alpha Channel). The polygon will look like below image.

7) Repeat step 3 to step 6 as many times as needed to fill the whole image with polygons, and you'll have a piece of polygon artwork manually done by hand.

If you're patient enough to finish, you can end up with something as beautiful as this(shown below) or even better depending on how creative you are with the polygons. Good luck and enjoy.


There's now a javascript app which runs in your browser to help you create these polygon arts quicker (you just have to load an image and then select vertices to define polygons, and the app will figure out the color for you).
- Run the javascript app online
- Download the javascript files (zipped, you just have to open index.html, download polygon_editable.zip) to run locally on your PC offline
- View Polygon Art App demo video
- Go to Polygon Art App facebook page (where you can share/view polygon arts)

Sunday, April 13, 2014

How to "System Restore" on Windows 8

1. move your mouse cursor to Top Right of Desktop for side bar to appear.

2. click on Search (magnifying glass) and type "control panel" and hit <Enter> key.


3. "Control Panel" appears, click on "System and Security".

4. "System and Security" appears, click on "System".

5. "System" appears, click on "System Protection" (on left hand side, highlighted below).

6. "System Properties" appears, under "System Protection" tab, click on "System Restore" button.

7. Continue with that and you should be able to select a restore point of an earlier date.