title: Gain-modulated three-dimensional active imaging with depth-independent depth accuracy.
abstract: We present a three-dimensional imaging method using a pulsed laser as a flood illuminating source and an intensified camera as the receiver with exponentially modulated gain. The depth map of a scene is obtained from two intensity images and the depth accuracy is independent of the depth of the target in the scene. We demonstrate a depth-independent depth accuracy of 0.32 m in an indoor experiment and obtain a depth map of an outdoor scene ranging from 150 to 180 m under a lower signal to noise ratio condition.
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Chenfei
authors.initials: C
authors.lastname: Jin
authors.forename: Xiudong
authors.initials: X
authors.lastname: Sun
authors.forename: Yuan
authors.initials: Y
authors.lastname: Zhao
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Liping
authors.initials: L
authors.lastname: Liu