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vikas
10-24-2004, 09:53 PM
Check out this link

http://www.radio-modules.com/products/cameras/wireless-ip.asp

Neat wireless camera can easily allow you to do offsite video processing so no hi-end h/w on robot side :) .

But it will require a wireless a card :( ... total investment might go to 10 grands for the system :) .

suniljha
10-25-2004, 07:09 AM
Dear Vikas,
The cost is 139 pounds + shipping + duties, its too high to afford. I am looking for some vision system for robots made out of cheap and easily available webcams. Is there anybody who is working on it or planning to try them? This would be of great help if done.. and can be a part of low cost robots.

Sunil Jha

Pulkit_gaur
10-25-2004, 10:14 AM
Did somebody say ....wireless cams ????

Yeah , simple chinese camera ( available for 700 /- )
can be made wireless , with ( ahmmmm..) making a
TX and its Rx interface ...I did that ... Implemented in my robot
"ALIAS" see it at http://www.pulkitgaur.netfirms.com/alias.htm
:arrow: self promotion ...he he :D

-
Pulkit

suniljha
10-25-2004, 11:33 AM
Dear Pulkit,
Great work! I have seen the link you have mentioned. Can you please let me know How can I take advantage of your expertise in understanding logitech webcam interface. But you have used SBC PIII in your robot which will take care of image capturing through webcam. Is there any option to interface webcam with MCU or DSPs. I know interfacing with MCU may not be that fast but it can at least analyse frames at slow interval.

Hope to hear from you soon..
Bye!
Sunil Jha

Pulkit_gaur
10-25-2004, 12:07 PM
Hi sunil,

actually ALAIS does distributed image processing ,it has 3 cameras, two for
on board processing and one is wireless which broadcasts images to a central server which stores image sequences in video memory database
for bookmarking ( localization and waypoint purpose ) and complex image recognition. It trasmits back the result to data to ALIAS.
onboard system has two cameras for only face recognition , camera calibration and motion tracking.

-
Pulkit

vikas
10-25-2004, 12:16 PM
Nice work pulkit :)

but
· On-Board processor : PIII 800 Mhz ( Intel / MMX / SSE )

· Data storage : 20 GB

· Operating System : Win98 SE

· Robot OS : Logic-P ( Multitasking mode / Pre -emptive )

· Power Consumption : 150 W ( Working )

100 W ( Stand By)

· Onboard Power : Backup 30 minutes.

Isnt this a small computer on wheels ? ... And if u dont have a spare PC around the costs might run much higher .... Also i cant seem to see the powersystem ? Most probaly the UPS ...

Anyway nice work

Pulkit_gaur
10-25-2004, 01:19 PM
Thanx,

actually ALIAS has a trolley of Power pack as it was not intended to carry
UPS ( heavy weight) and it already contains a small payload ( a simple robot car) , also most of the testing time a single power supply cord
was attacthed to its back ( u can see in picture of the SMPS is at its back )

Ya u r right its a computer on wheels , actually ALIAS is an autonomous robot so it requires a computing system on board,the best and cheapest
solution for all that - machine vision,NLP,sensor interface,data handling
was to mount a PC on board.

In the picture i have not shown the UPS,its a toroidal core transformer based
UPS which is used for its low RF noise and good stability ( as ALIAS had 3 VHF channels for communication ) also it was another reason for not mounting UPS on board
-
Pulkit

happy_99
10-27-2004, 11:49 PM
Great work Pulkit !!! Keep it up. Looking for more details on wireless webcam.

Is there some speciality for the name ALIAS :?:

Thanks & Regds

happy_99

Pulkit_gaur
10-30-2004, 03:06 PM
:)

Actually its not feasible to make a webcam wireless , instead u can go for
a simple camera with TV / video output and mount it on the robot.

U may have to do some labour , converting and feeding back that signal to PC :) , but its an easier way !!

Nothing special in name ALIAS , just like this name :)

regards
-
Pulkit

suniljha
10-30-2004, 03:34 PM
Dear Pulkit,
Regarding Wireless Webcam have you tried Wireless USB ICs from Cypress? I am planning to use them for making webcam wireless. Any idea?

Bye!
Sunil

10-30-2004, 10:48 PM
Pulkit,


Actually its not feasible to make a webcam wireless , instead u can go for
a simple camera with TV / video output and mount it on the robot.

u mean u used a TV capture card?

ice
//Gerry