Object Tracking using MACH filter and Optical Flow in Cluttered Scenes and Variable Lighting Conditions

Vision based tracking problem is solved through a combination of optical flow, MACH filter and log r-θ mapping. Optical flow is used for detecting regions of movement in video frames acquired under variable lighting conditions. The region of movement is segmented and then searched for the target. A template is used for target recognition on the segmented regions for detecting the region of interest. The template is trained offline on a sequence of target images that are created using the MACH filter and log r-θ mapping. The template is applied on areas of movement in successive frames and strong correlation is seen for in-class targets. Correlation peaks above a certain threshold indicate the presence of target and the target is tracked over successive frames.

Authors:

• Waqar Shahid Qureshi
• Abu-Baqar Nisar Alvi

Keywords:

• Correlation filters
• optical flow
• log r-θ mapping.

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