Sungkyunkwan University

Ing Co., Ltd.

Seung-sub Oh

Dae-sik Kim

Suk-han Lee

Jong-moo Choi

Provided is a structural light based three-dimensional depth imaging method and system using signal separation coding and error correction thereof capable of detecting, removing and correcting corresponding errors between a projection apparatus and an image photographing apparatus caused by phenomena such as reflection on an object surface, blurring by a focus, and so on, using geometrical constraints between the projection apparatus and the image photographing apparatus. Here, the projection apparatus projects light, and the image photographing apparatus obtains the light. The depth imaging method includes projecting light from a projection apparatus, obtaining the light using an image photographing apparatus, and measuring a distance or a three-dimensional depth image. Therefore, it is possible to provide a structural light based three-dimensional depth imaging method and system using geometrical conditions capable of precisely obtaining three-dimensional depth information of target environment.

Structural light based depth imaging method and system using signal separation coding, and error correction thereof

A 3D depth imaging method and system are disclosed. The 3D depth imaging method involves radiating light at a measurement target object using a projection means and imaging the light using an image receiving means, and includes the steps of assigning a unique transmitting side address to a signal corresponding to each pixel of the projection means to encode the signal; projecting multiple light patterns at the projection means to transmit the signal; receiving the encoded signal at the image receiving means; separating the received signal to restore the address; and determining a pixel position of the object using the transmitting side address and the restored address. With the 3D depth imaging method and system, it is possible to exactly separate signals received by the image receiving means even when the signals are overlap and the geometrical structure of the object varies, and it is also possible to obtain a depth image that is robust against ambient environmental noise.

Growing community of inventors

Suwon-si, South Korea

Seung-sub Oh