Flexible Miniaturized Camera Array Inspired by Natural Visual Systems

Aldalali, Bader; Fernandes, Jayer; Almoallem, Yousef; Jiang, Hongrui

doi:10.1109/jmems.2013.2284406

Cited by 12 publications

(7 citation statements)

References 11 publications

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“…The Ecoflex Rubber used was Ecoflex 00-10, and is a platinum-catalyzed silicone that is mixed by weight or volume and cured at room temperature with negligible shrinkage. The resultant cured rubber is naturally translucent, soft, strong and has the ability to stretch up to 900% of its length without tearing [15]. This creates a soft, but flexible, and moldable skin-like sensor.…”

Section: Skin Sensormentioning

confidence: 99%

Morphology and chemical termination of HF-etched Si3N4 surfaces

Liu

DeBenedetti

Peixoto

et al. 2014

Applied Physics Letters

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In this paper, a humanoid robot is presented for ultimate use in the rehabilitation of children with mental disorders, such as autism. Creating affordable and efficient humanoids could assist the therapy in psychiatric disability by offering multimodal communication between the humanoid and humans. Yet, the humanoid development needs a seamless integration of artificial muscles, sensors, controllers and structures. We have designed a human-like robot that has 15 DOF, 580 mm tall and 925 mm arm span using a rapid prototyping system. The robot has a human-like appearance and movement. Flexible sensors around the arm and hands for safe human-robot interactions, and a two-wheel mobile platform for maneuverability are incorporated in the design. The robot has facial features for illustrating human-friendly behavior. The mechanical design of the robot and the characterization of the flexible sensors are presented. Comprehensive study on the upper body design, mobile base, actuators selection, electronics, and performance evaluation are included in this paper.

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Section: Skin Sensormentioning

confidence: 99%

Morphology and chemical termination of HF-etched Si3N4 surfaces

Liu

DeBenedetti

Peixoto

et al. 2014

Applied Physics Letters

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“…The miniaturized cameras are easily deployed and retrieved using the mechanical system of the TCA. Such convenient deployment and retrieval of the miniature cameras offered by this trocar design is an advantage over our previous attempts to apply multiple cameras at laparoscopic ports [ 22 , 23 , 24 ]. The TCA can provide a larger FoV compared to a current laparoscopic imaging system that uses a single camera, with the use of multiple miniaturized cameras.…”

Section: Introductionmentioning

confidence: 99%

Large-Field-of-View Visualization Utilizing Multiple Miniaturized Cameras for Laparoscopic Surgery

et al. 2018

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The quality and the extent of intra-abdominal visualization are critical to a laparoscopic procedure. Currently, a single laparoscope is inserted into one of the laparoscopic ports to provide intra-abdominal visualization. The extent of this field of view (FoV) is rather restricted and may limit efficiency and the range of operations. Here we report a trocar-camera assembly (TCA) that promises a large FoV, and improved efficiency and range of operations. A video stitching program processes video data from multiple miniature cameras and combines these videos in real-time. This stitched video is then displayed on an operating monitor with a much larger FoV than that of a single camera. In addition, we successfully performed a standard and a modified bean drop task, without any distortion, in a simulator box by using the TCA and taking advantage of its FoV which is larger than that of the current laparoscopic cameras. We successfully demonstrated its improved efficiency and range of operations. The TCA frees up a surgical port and potentially eliminates the need of physical maneuvering of the laparoscopic camera, operated by an assistant.

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“…In [29], a combination of mammalian vision and insect vision is proposed. It is a 3-camera array and the authors are focused on the lens design for individual image sensors and the image processing is done offline by using free stitching software.…”

Section: Introductionmentioning

confidence: 99%

An Insect Eye Inspired Miniaturized Multi-Camera System for Endoscopic Imaging

Çoğal

Leblebici

2017

IEEE Trans. Biomed. Circuits Syst.

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In this work, we present a miniaturized high definition vision system inspired by insect eyes, with a distributed illumination method, which can work in dark environments for proximity imaging applications such as endoscopy. Our approach is based on modeling biological systems with off-the-shelf miniaturized cameras combined with digital circuit design for real time image processing. We built a 5 mm radius hemispherical compound eye, imaging a 180×180 degrees field of view while providing more than 1.1 megapixels (emulated ommatidias) as real-time video with an inter-ommatidial angle ∆ϕ = 0.5 at 18 mm radial distance. We made an FPGA implementation of the image processing system which is capable of generating 25 fps video with 1080 × 1080 pixel resolution at a 120 MHz processing clock frequency. When compared to similar size insect eye mimicking systems in literature, the system proposed in this paper features 1000 × resolution increase. To the best of our knowledge, this is the first time that a compound eye with built-in illumination idea is reported. We are offering our miniaturized imaging system for endoscopic applications like colonoscopy or laparoscopic surgery where there is a need for large field of view high definition imagery. For that purpose we tested our system inside a human colon model. We also present the resulting images and videos from the human colon model in this paper.

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Flexible Miniaturized Camera Array Inspired by Natural Visual Systems

Cited by 12 publications

References 11 publications

Morphology and chemical termination of HF-etched Si3N4 surfaces

Morphology and chemical termination of HF-etched Si3N4 surfaces

Large-Field-of-View Visualization Utilizing Multiple Miniaturized Cameras for Laparoscopic Surgery

An Insect Eye Inspired Miniaturized Multi-Camera System for Endoscopic Imaging

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