Large depth of field imaging method with liquid lens

Lei Cheng; Yuwei Wang

doi:10.1117/12.2606953

1 November 2021 Large depth of field imaging method with liquid lens

Lei Cheng, Yuwei Wang

Proceedings Volume 12057, Twelfth International Conference on Information Optics and Photonics; 120574I (2021) https://doi.org/10.1117/12.2606953
Event: Twelfth International Conference on Information Optics and Photonics, 2021, Xi'an, China

Abstract

This paper proposes a large depth-of-field (DOF) imaging method, which uses an image acquisition system equipped with a liquid lens. This paper also establishes the relationship between the focusing distance and the current value to estimate the object distance. The proposed method firstly uses a liquid lens to capture multi-focus images. Then the different objects in the scene are segmented by image processing algorithm. Then we apply an effective blur estimation algorithm on each object to determine the clearest image from all multi-focus images and obtain the corresponding current value. Finally, the clear images of different objects are combined to obtain a large DOF image, and meanwhile, the distances of different objects can be estimated, respectively. Experimental results show that the proposed method can effectively achieve large DOF imaging and measure approximate object distances.

Citation Download Citation

Lei Cheng and Yuwei Wang "Large depth of field imaging method with liquid lens", Proc. SPIE 12057, Twelfth International Conference on Information Optics and Photonics, 120574I (1 November 2021); https://doi.org/10.1117/12.2606953

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KEYWORDS

Liquids

Liquid lenses

Cameras

Imaging systems

Image fusion

Image acquisition

Image processing

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