Along with social distancing, wearing masks is an effective method of preventing the transmission COVID-19 in ongoing pandemic. However, occlude a large number facial features, recognition. The recognition rate existing methods may be significantly reduced by presence masks. In this paper, we propose to effectively solve problem lack feature information needed perform on people proposed approac...

Frequency domain properties of an image are used for precise detection of edge orientation in color and multi-spectral imagery. The orientation estimation is established as a minimization problem, formulated as a tensor method, and simplified by solving its dual in terms of spatial partial derivatives of the image. First, spectral density distribution around each pixel is obtained. The edge ori...

New algorithms for reconstructing wavefront from slopes data are developed, which exhibit high accuracy over broad spatial-frequency bandwidth. Analyzing wavefront reconstructors in the frequency domain lends new insight into ways to improve frequency response and to understand noise propagation. The mathematical tools required to analyze the frequency domain are first developed for discrete ba...