New technique of three-dimensional imaging through a 3-mm single lens camera

Bae, Sam Y.; Korniski, Ron; Ream, Allen; Shahinian, Hrayr K.; Manohara, Harish

doi:10.1117/1.oe.51.2.021106

Cited by 6 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the temporal division alternately collects two different images with binocular disparities on a single detector over the time. Conventional temporal division techniques utilize split-apertures based on mechanical shutter [6], mirror [7], or complementary multiband band-pass filter (CMBF) [8], which still reduces the field-of-view (FOV) by a half due to the physical split of an effective aperture. In contrast, a parallel-plate-rotation (PPR) technique can provide the full FOV with stereopsis by rotating an optically transparent plate prior to a single camera [9,10].…”

Section: Introductionmentioning

confidence: 99%

Electrothermal MEMS parallel plate rotation for single-imager stereoscopic endoscopes

et al. 2016

View full text Add to dashboard Cite

This work reports electrothermal MEMS parallel plate-rotation (PPR) for a single-imager based stereoscopic endoscope. A thin optical plate was directly connected to an electrothermal MEMS microactuator with bimorph structures of thin silicon and aluminum layers. The fabricated MEMS PPR device precisely rotates an transparent optical plate up to 37° prior to an endoscopic camera and creates the binocular disparities, comparable to those from binocular cameras with a baseline distance over 100 μm. The anaglyph 3D images and disparity maps were successfully achieved by extracting the local binocular disparities from two optical images captured at the relative positions. The physical volume of MEMS PPR is well fit in 3.4 mm x 3.3 mm x 1 mm. This method provides a new direction for compact stereoscopic 3D endoscopic imaging systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrothermal MEMS parallel plate rotation for single-imager stereoscopic endoscopes

et al. 2016

View full text Add to dashboard Cite

show abstract

“…See our previous works for opening the apertures alternately. [9][10][11] In this study, we present our effort to miniaturize a DASbased imaging system and to measure the resulting stereo depth effect (SDE). To demonstrate feasibility, a prototype was assembled using lens elements that are 3 mm in diameter, as shown in Fig.…”

mentioning

confidence: 99%

Development of a miniature single lens dual-aperture stereo imaging system towards stereo endoscopic imaging application

et al. 2012

Self Cite

View full text Add to dashboard Cite

Studies have shown that stereo images improve surgeons' visuomotor tasks and therefore constructively affect the outcome of a minimally invasive surgery. Stereo images are captured by a stereo endoscope, which consists commonly of duplicate lens systems. However, stereo images can also be captured by a single lens system following a dual aperture scheme (DAS). DAS creates two spatially separated optical channels by placing a dual aperture plate in the limiting aperture of a single lens system. This paper describes efforts to miniaturize the DAS-based imaging system for use in minimally invasive surgery. To demonstrate feasibility, a prototype was fabricated using lens elements 3 mm in diameter and was tested for its stereo depth effect (SDE). The SDE of the prototype was then compared to a duplicate lens system that was constructed theoretically in the same diameter as the 3-mm prototype. The results show that the prototype yields 4∕7 of the SDE of the theoretical model. However, the SDE of the prototype provides sufficient SDE, in a viewing range of 1 to 2.5 cm from the lens, for minimally invasive surgery.

show abstract