Abstract We study sparsity constrained nonlinear optimization (SCNO) from a topological point of view. Special focus will be on M-stationary points Burdakov et al. (SIAM J Optim 26:397–425, 2016), also introduced as $$N^C$$ N C -stationary in Pan (J Oper Res Soc China 3...

We propose an automatic image registration algorithm for tracking moving objects in low-resolution videos. The algorithm uses SIFT keypoints to identify matching stationary points in the input frame and the base frame. The best set of matching stationary points is used to create a spatial transform to register the points on the moving objects in the input frame to the base frame. We examined tw...