Optical coding of SPAD array and its application in compressive depth and transient imaging

Qilin Sun; Xiong Dun; Yifan Peng; Wolfgang Heidrich

doi:10.1117/12.2538783

18 November 2019 Optical coding of SPAD array and its application in compressive depth and transient imaging

Qilin Sun, Xiong Dun, Yifan Peng, Wolfgang Heidrich

Proceedings Volume 11187, Optoelectronic Imaging and Multimedia Technology VI; 111870D (2019) https://doi.org/10.1117/12.2538783
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

Time-of- ight depth imaging and transient imaging are two imaging modalities that have recently received a lot of interest. Despite much research, existing hardware systems are limited either in terms of temporal resolution or are prohibitively expensive. Arrays of Single Photon Avalanche Diodes (SPADs) are promising candidates to fill this gap by providing higher temporal resolution at an affordable cost. Unfortunately, state-of-the-art SPAD arrays are only available in relatively small resolutions and low fill-factor. Furthermore, the low fill-factor issue leads to more ill-posed problems when seeking to realize the super-resolution imaging with SPAD array. In this work, we target on hand-crafting the optical structure of SPAD array to enable the super-resolution design of SPAD array. We particularly investigate the scenario of optical coding for SPAD array, including the improvement of fill-factor of SPAD array by assembling microstructures and the direct light modulation using a diffractive optical element. A part of the design work has been applied in our recent advance, where here we show several applications in depth and transient imaging.

Citation Download Citation

Qilin Sun, Xiong Dun, Yifan Peng, and Wolfgang Heidrich "Optical coding of SPAD array and its application in compressive depth and transient imaging", Proc. SPIE 11187, Optoelectronic Imaging and Multimedia Technology VI, 111870D (18 November 2019); https://doi.org/10.1117/12.2538783

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Microlens array

Sensors

Geometrical optics

Picosecond phenomena

Solar concentrators

Imaging systems

Optical design

Show All Keywords

Keywords/Phrases

Search In:

Publication Years