We study logarithmic gradient estimate to smooth admissible solutions of the Hessian-type equations on Sn.The equations contain a Monge-Ampere equation arising in designing a reflecting surface in geometric optics as ...We study logarithmic gradient estimate to smooth admissible solutions of the Hessian-type equations on Sn.The equations contain a Monge-Ampere equation arising in designing a reflecting surface in geometric optics as a special case.展开更多
With the continuous development of technology, face recognition technology has played an important role in police work. In order to get a clear face image, image preprocessing technology is needed. This paper mainly p...With the continuous development of technology, face recognition technology has played an important role in police work. In order to get a clear face image, image preprocessing technology is needed. This paper mainly proposes illumination compensation technology and reconstruction technology based on symmetry.展开更多
文摘We study logarithmic gradient estimate to smooth admissible solutions of the Hessian-type equations on Sn.The equations contain a Monge-Ampere equation arising in designing a reflecting surface in geometric optics as a special case.
文摘With the continuous development of technology, face recognition technology has played an important role in police work. In order to get a clear face image, image preprocessing technology is needed. This paper mainly proposes illumination compensation technology and reconstruction technology based on symmetry.
