Single shot 3D imaging by active illumination and point-spread-function engineering

Huachen Li; Xin Wang; Lu Wang; Lulu Yang; Meng Zhang

doi:10.1117/12.3008100

24 November 2023 Single shot 3D imaging by active illumination and point-spread-function engineering

Huachen Li, Xin Wang, Lu Wang, Lulu Yang, Meng Zhang

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129354S (2023) https://doi.org/10.1117/12.3008100
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

Depth information is crucial for 3D scene reconstruction. Combining the advantages of active illumination, a 3D imaging method using engineered active illumination and double-helix point spread function (DH-PSF) is proposed. It projects a dense pattern of dots onto the object's surface, and a commercial camera captures the dot pattern through a pair of micro lens arrays in a 4f configuration, which includes a DH phase array at the 2f position on the Fourier transform plane. DH-PSF encodes depth information of the object, and by measuring the rotation angles of the two lobes of the dots on the object's surface, the distance between the imaging systems can be obtained. Simultaneously, the twodimensional image of the object can be reconstructed based on the captured images and the known DH-PSF. The proposed 3D imaging method can reconstruct the 3D structure of the object from a single captured 2D image. It has the advantages of improving distance resolution and reducing system complexity.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Huachen Li, Xin Wang, Lu Wang, Lulu Yang, and Meng Zhang "Single shot 3D imaging by active illumination and point-spread-function engineering", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129354S (24 November 2023); https://doi.org/10.1117/12.3008100

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KEYWORDS

Lens arrays

Point spread functions

3D image reconstruction

Stereoscopy

3D image processing

Imaging systems

Light sources and illumination

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