Digital Blur/Pixelate

[sias]

I've recently had need to start a new program in order to Blur/Pixelate an area of a screen. At first I thought no problem, I can just set a small square area and draw random colored pixels on it. Well this is all easier in my mind than when I actually started on this program. Before scrapping the whole idea, I figured I would ask if anyone has ever done a project like this before, and if you could kindly show me exactly how you went about doing it.

My first attempt was to modify a similar project by UEZ and his use of GDI+ in which he created a small box and drew random colored pixels within it, but because it chooses random RGB colors it didn't have an aesthetic feel to it. What I would like to do is choose only pixels colors from the area the box is on and just randomly change the location within the box I set.

Thank you for any and all help you may be able to give.

[hydroxide]

I've recently had need to start a new program in order to Blur/Pixelate an area of a screen. At first I thought no problem, I can just set a small square area and draw random colored pixels on it. Well this is all easier in my mind than when I actually started on this program. Before scrapping the whole idea, I figured I would ask if anyone has ever done a project like this before, and if you could kindly show me exactly how you went about doing it.

My first attempt was to modify a similar project by UEZ and his use of GDI+ in which he created a small box and drew random colored pixels within it, but because it chooses random RGB colors it didn't have an aesthetic feel to it. What I would like to do is choose only pixels colors from the area the box is on and just randomly change the location within the box I set.

Thank you for any and all help you may be able to give.

You could blur by say, setting each pixel's RGB as the average of RGBs of all pixels surrounding it.

For pixelate you could run nested loops over a step to go raster over an area, and draw a block with each pixels info. Eg: (0,0),(0,1),(1,0),(1,1) will have (0,0)'s RGB values.. this is 2x2 pixels with 1 pixel's color values.

[UEZ]

I've recently had need to start a new program in order to Blur/Pixelate an area of a screen. At first I thought no problem, I can just set a small square area and draw random colored pixels on it. Well this is all easier in my mind than when I actually started on this program. Before scrapping the whole idea, I figured I would ask if anyone has ever done a project like this before, and if you could kindly show me exactly how you went about doing it.

My first attempt was to modify a similar project by UEZ and his use of GDI+ in which he created a small box and drew random colored pixels within it, but because it chooses random RGB colors it didn't have an aesthetic feel to it. What I would like to do is choose only pixels colors from the area the box is on and just randomly change the location within the box I set.

Thank you for any and all help you may be able to give.

Which project do you mean where I used random colors?

UEZ

Edited September 16, 2009 by UEZ

[UEZ]

Do you mean the code from here: #667058?

If yes, then with this code I'm searching for all images in the universe but the code is not fast enought. Look for much better and much faster examples in that topic.

Or just look the my #04 Plasma example in "Some Graphical Examples Using GDI+". Maybe this is what you are searching for.

UEZ