Processing Forum

Screen name:
x_firm

x_firm's Profile

4 Posts

6 Responses

1 Followers

Activity Trend

Last 30 days

Loading Chart...

Show:

Expanded view
List view

Finding position and rotation of an LEGO duplo brick with an vision library
[1Reply]
- 23-Nov-2011 09:38 PM
- Forum: General Discussion
- Sub forum: Other
Hello

I have an project where I would like to find LEGO duplo bricks with an vision library and I don't know where to start.

Could any one point me in the right direction, I have been looking on OpenCV and blobscanner. I think I know how to find just the blobs representing the bricks and there position but I would also want to know the rotation. And also one other problem is the different colors of the bricks.

Hope some one can give me some pointers.. And one more thing is that the processing sketch will be executing on an android tablet that will get images from an network camera..

Make a beizer curve intersect true the mouse courser(calculate of control points)
[7Replies]
- 27-Aug-2011 02:15 PM
- Forum: Programming Questions
Ok let me try to ex plane my problem I want to draw a ball with a horizontal line on it. And when I with the mouse courser move over the ball I want to turn the ball and then bend the horizontal line to give the impression of the ball turning.

In the end it should be both a horizontal and a vertical line but the problem is the same for both off them.

My idea is to use a ellipse to draw the ball and use a bezier for the horizontal line but I cant figure out how to calculate the control points to get the impression I want.

The real problem is how to calculate the controller points so I get a nice curve that intersects the mouse pointer when it's inside the ellipse.

See the images below where as I have programmed It now the curve will not intersect the mouse cursor. The mouse cursor is showed as a small ellipse with a point in.

I will use it on my android phone to control a robot and the "ball" I'm trying to draw is one of the controls to behave as an analog stick.
2. void setup(){
3. size(640, 480);
4. smooth();
5. }
7. void draw()
8. {
9. background(200);
11. fill(180);
12. ellipse(width/2, height/2, 200, 200);
14. stroke(0);
15. noFill();
18. bezier(width/2-100, height/2, width/2-100, mouseY, width/2+100, mouseY, width/2+100, height/2);
19. bezier(width/2, height/2-100, mouseX, height/2-100, mouseX, height/2+100, width/2, height/2+100);
21. fill(150);
22. ellipse(mouseX, mouseY, 5, 5);
23. point(mouseX, mouseY);
24. }

Bluetooth communication with blueSmirf+arduino
[2Replies]
- 15-Aug-2011 10:47 AM
- Forum: Android Processing
Hello I want to make a android sketch for my phone where I can control a android bot throw Bluetooth. I wounder if any one has tested any like it with android processing?

I have dune It before with original processing by using serial library will that work in android processing? I will test it any how but I don't think so.

Fuzzy logic
[5Replies]
- 02-Feb-2011 10:35 AM
- Forum: Share your Work
I have now successfully created a fuzzy logic controller using Processing.

My test case was getting an object avoiding obstacles when given order to move to specific target..

You can try it here

The input variables was simple angle and distance.

Fuzzy sets for inputs:

Angel to obstacle:
smallAngle
mediumAngle
largeAngle

Distance to obstacle:
smallDist
mediumDist
largeDist

Instead of using linguistic rules I used something called FAMM(Fuzzy associative memory matrix) and that only work in a 2 input, 1 output scenario.

   smallAngle   mediumAngle   largeAngle
smallDist   90°   55°   35°
mediumDist   55°   35°   25°
largeDist   35°   25°   5°

Then defuzzification is done true weighting the relationships in the FAMM..

Are there any one how have experience of Fuzzy logic and are some other ones interested in this topic?

I would like to make a controller that can handle more then 2 inputs..

«Prev
Next »

Response title

Attachments

New to this Portal?

Activity Trend