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Recent progress on computer technologies is focused on mobility and size reduction rather than functionality. That provided us researchers and commercial manufacturers with low-cost, compact and high-capability electronic hardware. Visual sensors are no exception. Hereby in the light of recent technological advance it is possible to organize sensors with a two dimension array hierarchy and build very-capable...
Soundfield imaging is a novel technique for efficiently encoding, representing and processing the wave field captured by a microphone array. Some of the possible applications include source and reflector localization. In this manuscript we discuss the resolution properties of the soundfield image and the trade-offs that need to be considered while designing the “soundfield camera”. Then we propose...
Identification of landmarks for outdoor navigation is often performed using computationally expensive computer vision methods or via heavy and expensive multi-spectral and range sensors. Both choices are forbidden on Micro Aerial Vehicles (MAV) due to limited payload and computational power. However, an appropriate choice of the hardware sensor equipment allows the employment of mixed multi-spectral...
This article reports the findings of a compressive infrared sensing approach for arm gesture acquisition and recognition. The spatial-temporal changing motion information are intrinsical clues for determining the semantics of gesture, which can be considered as a sparse spatial distribution compared with the sensing region. We first built a database of dynamic arm gestures with writing Arabic numerals...
Our proposed glasses-free tabletop 3D display, fvision, employs a hollow conical screen and tiny, circularly arranged projectors installed underneath the table. It floats interactive virtual 3D objects on a flat tabletop surface.
Tables are widely used for various activities. We can share and exchange such media as documents or photos on their surfaces. fVisiOn, our proposed novel glasses-free tabletop 3D display, is designed to be a communication tool to augment ordinary tabletop activities by naturally providing virtual 3D media alongside actual media. This paper introduces the basic idea of our proposed method and recent...
To realize next-generation highly realistic sensation broadcasting systems, the research and development of 8K ultrahigh-definition television (UHDTV) systems have been promoted. To realize 8K video cameras, 33Mpixel sensors [1-2] and a full-resolution camera system that uses three 33Mpixel sensors [3] have been reported. However, the weight of the camera with three sensors is over 40kg because the...
The miniaturization of digital imaging systems is currently reaching both physical and technological limits for conventional setups. Further ongoing miniaturization leads to a reduction the spatial resolution and the signal-to-noise ratio of the digital imaging system. Additionally, there are technological challenges which lead to extremely tight fabrication tolerances and thus represent an unacceptable...
Hyperspectral imaging is a natural field for the implementation of compressive sensing because typical captured hyperspectral datacubes involve large amount of data which is also often very redundant. Compressive hypersepctral systems compress the hyperspectral data already in the acquisition step, thus remedy the severe storage and processing requirements typical to conventional hypersepctral imaging...
We address how an HCI (Human-Computer Interface) with small device size, large display, and touch input facility can be made possible by a mere projector and camera. The realization is through the use of a properly embedded structured light sensing scheme that enables a regular light-colored table surface to serve the dual roles of both a projection screen and a touch-sensitive display surface. A...
We present a method for reducing interference between multiple structured light-based depth sensors operating in the same spectrum with rigidly attached projectors and cameras. A small amount of motion is applied to a subset of the sensors so that each unit sees its own projected pattern sharply, but sees a blurred version of the patterns of other units. If high spacial frequency patterns are used,...
This paper presents the design and implementation of a simple software-based home control platform used for the automatic control of audio/video devices. The system facilitates integration of various residential sensors, with an accent on users' localization and presence detection. For the presence detection and localization we utilize three, the most frequently used technologies: visual (3D camera),...
The Canadian Underwater Protection System (CUwPS) is an integrated system that provides means to detect, localize, classify, and then warn underwater threats, with the purpose of preventing attacks on vessels berthed at anchor or alongside. The primary sensors of the system are commercial-off-the-shelf (COTS) and are integrated into a workable set of equipment and concepts with specific adaptations...
We have successfully developed biomimetic flow sensitive hair-sensor arrays taking inspiration from mechano sensory hairs of crickets. Our current generation of sensors achieves sub mm/s threshold air-flow sensitivity for single hairs operating in a bandwidth of a few hundred Hz and is the result of a few iterations in which the natural system (i.e. crickets filiform hair based mechano-sensors) have...
We study a problem in which a single sensor is scheduled to observe sites periodically, motivated by applications in which the goal is to maintain up-to-date readings for all the observed sites. In the existing literature, it is typically assumed that the time for a sensor switching from one site to another is negligible. This may not be the case in applications such as camera surveillance of a border,...
In the majority of cases blindness is caused by retinal degenerative conditions such as Age-Related Macular Degeneration (AMD) and Retinitis Pigmentosa (RP). However, blind individuals still retain central visual pathways and processing mechanisms. Recent advances in Time of Flight (TOF) imaging technology have presented new opportunities to develop improved sensory substitution systems for compensation...
In today's industry, intuitive gesture recognition, as manifested in numerous consumer electronics devices, becomes a main issue of HMI device research. Although finger-tip touch based user interface has paved a main stream in mobile electronics, we envision touch-less HMI as a promising technology in futuristic applications with higher potential in areas where sanity or outdoor operation become of...
In comparison to the traditional manual measurement of the light leakage degree of piston rings. A new detection method of light seal degree (LSD) based on CCD image sensors is presented. The features of CCD are deeply analyzed in this paper. The similarities and differences between the area array CCD imaging plan and the linear CCD scanning plan are discussed in the detection of LSD of a piston ring...
In this paper, a computational photography system is utilized to sample 4D light fields. The system is implemented using a normal DSLR camera with a mask printed using Kodak LVT technique. We reconfigure the camera by inserting a pinhole array mask in front of the sensors. The mask blocks part of light and samples the rest that passes through the pinholes. With these 4D light field data, the refocused...
Very large format video or wide-area motion imagery (WAMI) acquired by an airborne camera sensor array is characterized by persistent observation over a large field-of-view with high spatial resolution but low frame rates (i.e. one to ten frames per second). Current WAMI sensors have sufficient coverage and resolution to track vehicles for many hours using just a single airborne platform. We have...
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