All Questions
16 questions
0
votes
1
answer
49
views
What is the exact format and size of Image() object?
I cannot figure out what is the exact format of the sensor_msg Image() file. When I issue the command:
rostopic echo /camera/image_raw
I get a massive output ...
Tejas Rao
0
votes
1
answer
11
views
Images from fisheye camera are displayed correctly with BGR8 encoding but not with MONO8
Hi,
I want to output grayscale images from a fisheye camera (FOV < 180 degree). I understand that ROS currently doesn't support fisheye distortion models. However, I see that if I use a BGR8 image ...
tuandl
0
votes
1
answer
8
views
image stream using camera
Hello guys,
My question might seem easy for many since i am still fresh in Ros and Opencv.
I am following the tutorials provided on Ros Website. I am going through the tutorial ''Converting between ...
Firoooo
0
votes
1
answer
1
view
point grey camera withe jackal
Hi,
I am using the jackal for my university project.
I have attached a camera to collect images and am using the cv bridge library to get snapshots.
On the desktop and simulation environment, I use ...
rsmitha
0
votes
1
answer
88
views
how can i capture an image from camera using opencv c++ code in ROS?
This is my code:
but I don't how to use it in ROS.Please help me step by step.
...
omar1995
0
votes
1
answer
6
views
Noise Image_raw from video stream
I have 2 cameras looking at an object, estimating the transformation between two camera images using OpenCV feature matching. I have ROS driver for 2 cameras (gscam). When receiving new image topic (/...
tn0432
0
votes
2
answers
30
views
2D image point to 3D
Hey!
I have a setup with a bottom camera (simple webcam pointed at the ground). Along with the camera is an IMU, which means that I have the attitude of the camera. I also have an estimation of the ...
nwanda
0
votes
1
answer
1
view
What is the package in Indigo supports webcam in laptop?
Packages available for webcams are only for usb webcam and few for laptop cams but i cant find any Package for Indigo rather than Hydro, so what is the Indigo package supports laptop webcams
...
Kishore Kumar
0
votes
1
answer
4
views
Optical flow with bottom camera on aerial vehicle
I'm interested in obtaining an estimation of the linear velocity of the vehicle using optical flow, so which are the best packages for optical flow using the bottom camera of an aerial vehicle? (the ...
nvoltex
0
votes
1
answer
6
views
How to use a sdk (non-ros header/lib/binaries) in ros package?
I am trying to use a camera sdk to write a camera stream publisher in ros.
It's not a uvc camera, so I cannot use usb_cam or other similar nodes to access the camera stream.
I've already had the ...
fromandto
0
votes
2
answers
7
views
how to publish and sub camera in opencv
i've finished my opencv program ! I want to publish to pc other (LAN)
What should I do
Here my program opencv
...
turtle
0
votes
1
answer
1
view
red colour detection
i want to detect red colour in ros hydro on ubuntu 12.04.
i am using opencv .
how do i do it i am usinga usb_cam driver
Originally posted by deepak.shankar94 on ROS Answers with karma: 1 on 2014-02-...
deepak.shankar94
0
votes
1
answer
2
views
Laserscan bag to film
Hi everyone,
i'm looking for a method to automatically generate films from laserscan bags.
Important is that it's also possible to set the camera perspective.
So far i've been thinking about ...
Josch
0
votes
1
answer
9
views
XIMEA Camera under linux?
I am currently trying to get XIMEA working with OpenCV 2.3 / 2.4 or ROS under linux, I know prosilica works and the wiki has examples. I have the vaViewer (comes with XIMEA) working under linux, but ...
xamox
0
votes
1
answer
11
views
Get IR stream from kinect
Hi, everybody,
I need to capture the IR stream from IR camera of kinect and I have to use OpenCv Library for analizing it. Doing so, I built a subscriber at the topic ...
Deby85
0
votes
1
answer
6
views
Camera pose calibration with multiple camera's
Hi,
we're using the camera_pose_calibration package and try to calibrate multiple camera's with it.
We followed the instructions at http://www.ros.org/wiki/camera_pose_calibration - which went well.
...
Steven Bellens