Questions tagged [computer-vision]

The goal of computer vision is an automatic extraction of information out of images. It includes methods for acquiring, processing, analyzing, and understanding images and high-dimensional data from the real world in order to produce numerical or symbolic information, e.g., in the forms of decisions. The image data can take many forms, such as video sequences, views from multiple cameras, or multi-dimensional data from a medical scanner.

Filter by
Sorted by
Tagged with
3
votes
2answers
168 views

Non-Vision Based Target Tracking

I am building 4-wheeled, knee-high robot with music and speakers on top that will follow a target person as the target moves around. I would like some help with the setup for tracking the target. The ...
3
votes
1answer
979 views

How to obtain stereo correspondences and what exactly is a disparity map?

I am currently reading into the topic of stereo vision, using the book of Hartley&Zimmerman alongside some papers, as I am trying to develop an algorithm capable of creating elevation maps from ...
0
votes
2answers
289 views

How do we make our robot work?

As a holiday project we are building a surveillance robot that is capable of transmitting live images using a webcam and is also capable of lifting small objects. It uses a CC2500 module for ...
21
votes
4answers
13k views

How to select cameras for a stereo vision system?

I am in the process of building a stereo vision system to be used on a UGV. The system is for a robot that will be used in a competition wherein the robot is teleoperated to find relatively small ...
5
votes
1answer
88 views

Is it possible to achieve arbitrary precision in camera calibration?

Is it possible to achieve arbitrary precision to the calibration of the extrinsic parameters of a camera or is there a minimum error wich can not be compensated (probably dictated by the camera's ...
5
votes
2answers
169 views

How to Identify Objects in Space

Using a depth sensing camera like Kinect, I would like to retrieve the position of an predetermined object (e.g. a cup, fork etc so that I would ultimately be able to grab the object). What would be a ...
6
votes
3answers
222 views

How can computer vision distinguish one object being contained by another vs being on top of it?

How do we know that an object is contained inside another object or is just lying on top of it? Lets take an example of a cup-plate-spoon. The cup is lying on top of the plate. But the spoon is ...
12
votes
4answers
5k views

How to obtain dense point clouds from stereo cameras?

I am trying to use a stereo camera for scene reconstruction, but I can usually only obtain sparse point clouds (i.e. over half the image does not have any proper depth information). I realize that ...
7
votes
3answers
987 views

Visual Odometry options? [closed]

What are the pros/cons of the different visual odometry options? Stereo Camera Optical Flow SLAM other? Criteria: how well it performs vs other odometry options/sensors (lidar, radar) sensor ...
8
votes
2answers
186 views

Floor Segmentation to Determine Navigable Paths

In my application, my robot has the following physical setup: Differential drive mechanics with feedback (wheel encoders) Commercially available webcam mounted with a known transform to the base of ...
5
votes
3answers
214 views

F/OSS Optical Object Avoidance

I am beginning work on a larger scale, 250-350 lbs wheeled robot and looking to use both optical and other means of object avoidance. I am concerned with a robot this large causing issues with running ...

1 2 3 4
5