About

Gender

Male


About Me:

Builing embeded systems and interested in in loop simulations


Please tell us a bit about your UAV interest

www.bluekulu.com


Hometown:

Cork, Ireland


Activity Feed

Diarmuid Wrenne replied to Daniel Nugent's discussion Object tracking
"Hi Daniel,

Try http://code.google.com/p/aforge/ . c# and microsoft friendly. Good for prototyping and for developing algorithms and allows for a more interactive development process.

Look at PIL for python. Does not do what aforge does (hough…"
Mar 25, 2010
Diarmuid Wrenne left a comment for mohammed saif
"Thanks. It's great to link up across such a distance."
Mar 25, 2010
Diarmuid Wrenne replied to Daniel Nugent's discussion Object tracking
"Try OpenCV ˇhttp://opencv.willowgarage.com/wiki/

AVRcam

Look for optical flow, blob tracking, that sort of thing. Automatic tracking an object the size of a car at distance is non trivial unless you tell it it's a car first. Or else use optical…"
Mar 25, 2010
Diarmuid Wrenne replied to mohammed saif's discussion Razor 9DOF IMU AHRS , used software
"Hi,

I am doing the same. Currently I'm working on the data bus and then I will do the graphics. There are a few projects on google code that do something similar as well as Paparazzi.

Have you got as far as parsing the data stream and seeing the…"
Mar 24, 2010
Diarmuid Wrenne posted a discussion
Hi,(Scrap this, as after looking at the SLAM page, it looks like they used the Hokuyo scanner . It generates the same sort of image as the images in the videos is you have a spare 350 grames available and $5500 then indoor lidar is for you. That…
Mar 20, 2010
Diarmuid Wrenne replied to Jonas Arvidsson's discussion Best way to determine the speed relative to the ground?
"While the absolute error for GPS chips can be quite big, their drift in the short term (minutes) is very small. So for distances relative to the start point, they are pretty good. You need to be outdoors and have very good sat readings.

That said,…"
Mar 17, 2010
Diarmuid Wrenne replied to Kraig Krumm's discussion Rocket application
"Hi,
Have you any info on the vibrations experienced in the previous flight? Is it possible to steer the second stage after first stage burnout. I'd have a look at trying to use a camera based system (maybe in conjunction with the solid state IMU).…"
Mar 16, 2010
Diarmuid Wrenne replied to Joel Ryan's discussion UAV object tracking
"Look up blob tracking in OpenCV. It is doable in a small room type environment. Visually (i.e with a camera) tracking an object over 500 meters away is something that the military probably do. Lots of processing power and heavy UAV's. That said, the…"
Jan 16, 2010
Diarmuid Wrenne replied to Diarmuid Wrenne's discussion lookdown video analysis code
"Thanks

Those links look great. Here is an academic one that looks good.

http://www.mil.ufl.edu/~nechyba/mav/

They do the processing on the GS."
Jan 11, 2010
Diarmuid Wrenne posted a discussion
Having seen that the ardone is using a lookdown camera for stability, I though I would put together a simple bit of code to look at a video stream and find point of interest. They seem to have a grid of 25 points that they lock on to points of…
Jan 10, 2010
Diarmuid Wrenne commented on Chris Anderson's blog post Augmented reality games with the Parrot AR.Drone
"Jack, don't forget the Paparazzi is French too. The iphone bit is a gimmik but a great one. It actually is not that bad a controller. Re battery time, I read that the aussi quad copter has a longer battery life (for $60,000 it would want to), but…"
Jan 7, 2010
Diarmuid Wrenne commented on Chris Anderson's blog post Another video of the awesome Parrot AR.Drone
"March 5th from the engaget review."
Jan 6, 2010
Diarmuid Wrenne commented on Chris Anderson's blog post Another video of the awesome Parrot AR.Drone
"Great video. They seem to have made a very smooth product.

Looks like it will only cost 320 GBP in the Summer and it looks like they have are facilitating a developer community around the unit.

The AR opps for this are amazing. Can you imagine an…"
Jan 6, 2010
Diarmuid Wrenne commented on Tom Yochum's blog post Using ArduPilot as an aerial minesweeper?
"Impossible.

Look at Walter Reed. It is full of guys with legs and arms blown off by mines and their modern, bigger equivalent, so called IED's . These are very large artillery shells stuffed with HE. If the US military find it that hard to find…"
Dec 11, 2009
Diarmuid Wrenne posted a discussion
http://www.pointandtoss.com/Interesting concept. It flies out ancd comes straight back. Pop in a new battery and do the same again.
Oct 10, 2009
Diarmuid Wrenne commented on Clarence Hanson's blog post Our very first flight (with two way telemetry)
"Very nice work. I think a project to build an open source ground station similar to the paparazzi one would be nice. Any move on trying to fly the aircraft via a serial uplink. I wonder whether a process that basically updates the target way point…"
Oct 10, 2009
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