Depth estimation with tilted optics by multi-aperture using color filter

H. Ikeoka; T. Hamamoto

doi:10.1117/12.2566506

1 June 2020 Depth estimation with tilted optics by multi-aperture using color filter

H. Ikeoka, T. Hamamoto

Proceedings Volume 11515, International Workshop on Advanced Imaging Technology (IWAIT) 2020; 115152Q (2020) https://doi.org/10.1117/12.2566506
Event: International Workshop on Advanced Imaging Technologies 2020 (IWAIT 2020), 2020, Yogyakarta, Indonesia

Abstract

We have been investigating a depth estimation system for real-time applications. Stereo camera method is too sensitive to slight variations of baseline length due to vibration and temperature. Additionally, it has occlusion problem. On the other hand, monocular camera method by focusing cannot provide a balance between wide-area estimation and real-time estimation. Therefore, we have proposed a method that adopts tilted lens optics. In this method, the plane of sharp focus (POF) lies and the depth of field (DOF) enlarges toward the depth direction. Herein, we can obtain depth values at each pixel from a ratio of the sharpness values of two tilted optics images using monocular camera system with spectroscopic. This advantage works for real-time application such as automotive tasks. In this paper, we introduce a novel method to realize a compact imaging device which is consist of only one pair of an image sensor and a tilted optics. We have adopted multi-aperture using color filter to achieve our proposal. By using not only a normal aperture but also an aperture with green color filter which is smaller than the normal aperture at the same position in the optics, we realize to obtain two type blur images for tilted depth estimation easily.

Citation Download Citation

H. Ikeoka and T. Hamamoto "Depth estimation with tilted optics by multi-aperture using color filter", Proc. SPIE 11515, International Workshop on Advanced Imaging Technology (IWAIT) 2020, 115152Q (1 June 2020); https://doi.org/10.1117/12.2566506

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