Hello Olivier, I am a student from Texas A&M University Kingsville presently working on Webots under Dr. Selahattin Ozcelik . I would like to know if you one...
Hi! Can somebody tell me how to put a range camera on a khepera robot on webots? What are the values of the attributes to put in the Camera node? Thanks in...
Jorge Simão
jsimao@...
Oct 8, 2004 11:37 pm
617
Best way is to use a DistanceSensor node, I guess... What is a "range camera" anyway? A laser? -Sp ... -- ,_ .--. , , _)\ / ;--. . ' . \_\-' | .'...
Hello Guys ! I am using a AI based algorithm to include learning and memory features in my program running on khepera. I'm using a webots 4.0.25 environment to...
Hey My questions are 1) Do i need to download some driver on to my PC for installing the K2D video turret? 2) is there a " khepera_k2d" world build already in...
You could try resetting the DifferentialWheels position and rotations. They tend to accumulate small errors, and it sounds as if the wheel axis is not rotating...
Nitin: The Khepera K2D video Turret requires a frame grabber or other video adapter on your computer. It would be this device that would have drivers to...
Hello, Is it possible to use Hemisson Linear Camera in Webots-3.2.24 and how? Regards, -Levent...
Levent Bayindir
levent@...
Oct 18, 2004 7:59 am
623
Dear Levent, There is no model of the Hemisson Linear Camera in Webots-3.2.24, but you can add one by yourself (by simply doing a copy / paste of the linear...
Hi Levent: We are really interested in how people are using Hemisson's Linear Camera. We have found some limitations in the current HemiOS for things like the ...
Hello !! I am incurring a problem whenever i am trying to run my program in webots environment. The environment has a robot which is supposed to navigate thru...
Nitin: Is it possible to send email again to this group and include as much of the text as possible from the error report for this problem? Thanks, Kim ... -- ...
Nitin, Although I am pretty busy right now (giving presentations in the US / attending RoboNexus conference), can you send me your .wbt and .c files so that I...
Bonjour, I have questions about the camera definition. In Webots, the camera is defined by the FOV in radians, imager width, and imager height in pixels. I...
Stephan, Don't know if this is any use, but this is from some old Webot camera code that seemed to work: c.width = camera_get_width(r.camera); c.fov...
... Measure units in Webots are universally as follows: - angle [radians] - distance [meters] (As far as I know, cameras are no exception.) -- Sergei...
Thank you all for your hints... Probably, I start to understand how the range image is generated. The view pane is selected by the perspective projection...
On Fri, 22 Oct 2004 09:17:00 +0200, Stefan Gächter ... Yes, I think so. The camera image comes out distorted, so a ball at the sides looks bigger than it...
Thanks again for the help... Meanwhile, I get more or less correct range images. However, I have some other questions... 1) Is the initial orientation of...
... Well, I don't think so, I believe it is a bit more complicated. I would say 0 is correct, but -pi/4 and pi/4 should be replaced by -pi/4+pi/12 and...
... Yes, they should all head in the same direction: z-axis. If you find one don't heading to the z-axis, please let me know. ... The gps_euler function was...
Hi, Sorry for my late answer (I am just back from RoboNexus / Silicon Valley). ... Yes, it seems to me to be correct. ... (see my ealier answer) ... No, they...
Olivier, Thank you very much for the information. I hope you had a successful trip to the States... However, the link http://cyberoticspc1.epfl.ch/contest is...
Thanks for the description of the Euler angle computation. This helps a lot! ... And ... on ... I believe you should set the scale field to 1 1 1 (and resize...
... I think it is quite sufficient to say that there is currently a requirement in Webots (hopefully documented?), and it is that a rotation direction vector...
Hi there, I have a quick question about calculating the compass angle in Webots. It seems that euler_angle[1] is not working properly for me somehow. I am...
Hi, I need to track the coordinates of an object in the workspace (modeled as a SOLID node) that is picked up and moved by a mobile robot, using a GRIPPER. To...
Hi, This seems to be a bug, as the object gripped by the Khepera in khepera_gripper.wbt is using a kind of trick as no physics simulation is used. And this...
... Do you use the gps_get_matrix() and the gps_euler() functions ? Can you check that the gps_get_matrix function returns a 4x4 matrix that changes with the...
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