Swimmer’s Head Detection Based on a Contrario and Scaled Composite JTC Approaches

Figure 10

Localization of the region of interest based on the method a contrario. Image 1: noise model obtained from the difference between two images of the empty lane. Images 2, 5, and 8: frame difference between two successive frames. Images 3, 6, and 9: blocs decomposition and thresholding compared to a threshold relative to the noise model. Images 4, 7, and 10: swimmer localization. Swimming Championships in Limoges, France, April 2015.