公开(公告)号：US09826216B1

公开(公告)日：2017-11-21

申请号：US15274994

申请日：2016-09-23

申请人： Aryan Hazeghi ,  Carlo Dal Mutto ,  Giulio Marin ,  Francesco Peruch ,  Michele Stoppa ,  Abbas Rafii

发明人： Aryan Hazeghi ,  Carlo Dal Mutto ,  Giulio Marin ,  Francesco Peruch ,  Michele Stoppa ,  Abbas Rafii

IPC分类号： H04N13/02 ,  H04N5/225 ,  G02B27/30 ,  G02B27/42 ,  G02B27/48 ,  G02B26/08 ,  H04N13/00

CPC分类号： H04N13/239 ,  G01B11/00 ,  G01B11/25 ,  G02B26/0808 ,  G02B27/0075 ,  G02B27/30 ,  G02B27/42 ,  G02B27/4205 ,  G02B27/425 ,  G02B27/48 ,  G03B17/54 ,  G06K9/2036 ,  G06K2209/40 ,  G06T2207/10028 ,  G06T2207/10152 ,  G06T2207/20228 ,  H04N5/2256 ,  H04N13/271 ,  H04N2013/0081

摘要： A pattern projection system includes a coherent light source, a repositionable DOE disposed to receive coherent light from said coherent light source and disposed to output at least one pattern of projectable light onto a scene to be imaged by an (x,y) two-dimensional optical acquisition system. Coherent light speckle artifacts in the projected pattern are reduced by rapidly controllably repositioning the DOE or the entire pattern projection system. Different projectable patterns are selected from a set of M patterns that are related to each other by a translation and/or rotation operation in two-dimensional cosine space. A resultant (x,y,z) depth map has improved quality and robustness due to projection of the selected patterns. Three-dimensional (x,y,z) depth data obtained from two-dimensional imaged data including despeckling is higher quality data than if projected patterns without despeckling were used.