Stereo Disparity

3D reconstruction can be done based on depth information obtained from a pair of cameras. Stereo disparity map basically tells us the distance between each point in image and the camera.


Optical Flow

Optical Flow gives us information related to how the pixels move between images taken at two different points in time. Color coding can be used to display the movement direction.



Pixels of the image can be segmented into meaningful groups. Segmented images can be used for object detection, grasping etc.


Tutorials and Code

Getting started initially can be difficult. Check out my tutorials and code examples in order to get a jump start!


@article {guzman2011_overtaking,
   author = {Guzm\'an, Pablo and D\'iaz, Javier and Ralli, Jarno and Ag\'is, Rodrigo and Ros, Eduardo},
   affiliation = {Department of Computer Architecture and Technology, ETSI Inform\'atica y de Telecomunicaci\'on, CITIC-UGR, University of Granada, Granada, Spain},
   title = {Low-cost sensor to detect overtaking based on optical flow},
   journal = {Machine Vision and Applications},
   publisher = {Springer Berlin / Heidelberg},
   issn = {0932-8092},
   keyword = {Computer Science},
   pages = {1-13},
   url = {},
   note = {10.1007/s00138-011-0392-2},


Jarno Ralli
Author: Jarno Ralli
Jarno Ralli is a computer vision scientist and a programmer.

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