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| DivideByZero |
 Posted: Tue Jan 22, 2008 7:51 pm Post subject: Java program I made! |
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Forum Junior
Joined: 02 Dec 2007
Posts: 256
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I created this neat Java applet where you click around anywhere as many times you want then click "calculate". After its done thinking, it will find the pixel closest to all of the places you clicked.
I can't really explain it well so please view my applet
http://braintyrant.googlepages.com/java
What do you think of it? I'm a new developer so please critique.
I put a map of italy on the background and clicked every city except rome then clicked calculate. And then the closest pixel was very close to rome. |
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| marnixR |
| Posted: Wed Jan 23, 2008 12:57 am Post subject: |
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Forum Isotope
Joined: 10 Apr 2007
Posts: 2783
Location: Cardiff, Wales
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i don't seem to get past the stage where it says 'Loading Java Applet'
the page remains like that for the last few minutes - far too long for anyone to hang around + wait to see whether it will ever appear
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| 425 Chaotic Requisition |
| Posted: Wed Jan 23, 2008 4:52 am Post subject: |
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The Doctor
Joined: 18 Jun 2007
Posts: 3443
Location: England, UK.
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It stops 'thinking' at 99%. Much like humans really  .
I have got an image of lines (green lines) going in funny directions from the plotted co-ordinates I placed randomly:
The colour is not accurate because I saved it as a J-PEG.
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"Victory is in trying. Defeat is in not". - SVRDW. |
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| DivideByZero |
| Posted: Wed Jan 23, 2008 5:01 am Post subject: |
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Forum Junior
Joined: 02 Dec 2007
Posts: 256
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marnixR, you might not have the current version of java or your computer might be just a bit slow.
svwillmer, try going back to the applet and clicking randomly. Then click calculate and just wait. Don't click anything else (i.e. clicking around different tabs or minimizing the window). Also you should only click calculate once. If you want to run the applet again then refresh the page. Hope this helps. |
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| marnixR |
| Posted: Wed Jan 23, 2008 6:24 am Post subject: |
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Forum Isotope
Joined: 10 Apr 2007
Posts: 2783
Location: Cardiff, Wales
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| DivideByZero wrote: |
| marnixR, you might not have the current version of java or your computer might be just a bit slow. |
the version i have on my PC runs Java 2 SDK Standard Edition v1.3 - which one is required ?
i doubt whether it's the PC being slow - 3.4GHz and 2GB RAM should be plenty
on the other hand we sometimes have a slow network, so that could be a contributing factor
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| sunshinewarrior |
| Posted: Wed Jan 23, 2008 7:43 am Post subject: |
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Forum Ph.D.
Joined: 26 Sep 2007
Posts: 1049
Location: London
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Hey there dividebyzero (or is it ok to call you Nishant?)
I tried it and it worked and I think it could be quite a neat little thing (the example you provided showed how).
Two things I noted:
1. It seems to work quite slowly
2. Is there a possibility of copy-pasting a designed shape in the form of a series of points onto it?
Nice one.
cheer
shanks |
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| DivideByZero |
| Posted: Wed Jan 23, 2008 11:46 am Post subject: |
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Forum Junior
Joined: 02 Dec 2007
Posts: 256
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| sunshinewarrio wrote: |
Hey there dividebyzero (or is it ok to call you Nishant?)
I tried it and it worked and I think it could be quite a neat little thing (the example you provided showed how).
Two things I noted:
1. It seems to work quite slowly
2. Is there a possibility of copy-pasting a designed shape in the form of a series of points onto it?
Nice one.
cheer
shanks |
It worked slowly because the program goes through each pixel to calculate it's distance from the points. After all that it orders all the distances from least to greatest.
What do you mean by #2?
a designed shape? Like a picture of a hexagon being copy and pasted over onto the background of the program? |
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| marnixR |
| Posted: Wed Jan 23, 2008 12:57 pm Post subject: |
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Forum Isotope
Joined: 10 Apr 2007
Posts: 2783
Location: Cardiff, Wales
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seems to work at home
but yeah, i agree with shanks : it's a bit slow
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if you find this place too crowded or too confrontational, how about trying Philosophorum,
the amicable forum where small is beautiful and even the trolls are intelligent
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| serpicojr |
| Posted: Thu Jan 24, 2008 5:48 am Post subject: |
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Forum Professor
Joined: 17 Jul 2007
Posts: 1128
Location: JRZ
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| DivideByZero wrote: |
It worked slowly because the program goes through each pixel to calculate it's distance from the points. After all that it orders all the distances from least to greatest.
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Surely you must be able to come up with a better algorithm... |
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| sunshinewarrior |
| Posted: Thu Jan 24, 2008 7:08 am Post subject: |
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Forum Ph.D.
Joined: 26 Sep 2007
Posts: 1049
Location: London
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| DivideByZero wrote: |
What do you mean by #2?
a designed shape? Like a picture of a hexagon being copy and pasted over onto the background of the program? |
A picture made of dots or points, yes. If I converted the outline of the Mona Lisa to a set of dots, would it calculate, as it were, the planar centre-of-gravity of her face? |
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| DivideByZero |
| Posted: Thu Jan 24, 2008 11:37 am Post subject: |
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Forum Junior
Joined: 02 Dec 2007
Posts: 256
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| sunshinewarrio wrote: |
| DivideByZero wrote: |
What do you mean by #2?
a designed shape? Like a picture of a hexagon being copy and pasted over onto the background of the program? |
A picture made of dots or points, yes. If I converted the outline of the Mona Lisa to a set of dots, would it calculate, as it were, the planar centre-of-gravity of her face? |
Oh I see what you mean.
I should try that!
Well before I do that, my next project is to make shape recognition eyes.
I'll have 2 webcams 6 inches away from each other that project what they see to the computer. Then I'll write a code to find the difference of the displacement of a pixel from the two cameras. I'll try to figure out some ratio to convert that pixel-distance to centimeters. That way with those two eyes I can measure distance!
Once I'm done with that I'm going to make a quick color recognition software (not hard).
Then a shape recognition software (lot harder).
Then a face recognition software!!! (impossible!!! lol) |
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