Implementation of a Robust Optical Flow Method for Color Images

Authors: Monzón López, Nelson; Sánchez Pérez, Javier; Salgado de la Nuez, Agustín J.
Line of Research: Optical flow
Year: 2014
Type of Publication: Technical Report
Keywords: Optical Flow, Motion Estimation, Variational Techniques, Image Registration
Journal: CTIM Technical Report
Institution: Universidad de Las Palmas de Gran Canaria
Number: 4
ISSN: 2254-2353
Month: September
We analyse the influence of colour information in optical flow methods. Typically, most of these techniques compute their solutions using grayscale intensities due to its simplicity and faster processing, ignoring the colour features. However, the current processing systems have minimized their computational cost and, on the other hand, it is reasonable to assume that a colour image offers more details from the scene which should facilitate finding better flow fields. The aim of this work is to determine if a multi-channel approach supposes a quite enough improvement to justify its use. In order to address this evaluation, we use a multi-channel implementation of a well-known TV-L1 method. Furthermore, we review the state-of-the-art in colour optical flow methods. In the experiments, we study various solutions using grayscale and RGB images from recent evaluation datasets to verify the colour benefits in motion estimation.
Full text: CTIM_4_2014.pdf