Imaging

Reducing Drift in Stereo Visual Odometry

The drift was reduced from an uncorrected 47 cm to just 7 cm.Visual odometry (VO) refers to the estimation of vehicle motion using onboard cameras. A common mode of operation utilizes stereovision to tri angulate a set of image features, track these over time, and infer vehicle motion by computing the apparent point cloud motion with respect to the cameras. It has been observed that stereo VO is subject to drift over time.

Posted in: Briefs, Imaging, Imaging and visualization

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Novel Hemispherical Dynamic Camera for EVAs

A novel optical design for imaging systems is able to achieve an ultra-wide field of view (UW-FOV) of up to 208°. The design uses an integrated optical design (IOD). The UW-FOV optics design reduces the wasted pixels by 49% when compared against the baseline fisheye lens. The IOD approach results in a design with superior optical performance and minimal distortion.

Posted in: Briefs, Imaging, Physical Sciences, Optics, Spacecraft

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Camera Systems Rapidly Scan Large Structures

Thermography designed to protect aircraft from effects of aging finds use in power stations, manufacturing plants, and ships. Aging aircraft are an increasing concern. Commercial and government vehicles are being flown past their originally intended service life in order to save money. The answer, however, isn’t merely to build more aircraft. NASA’s Aircraft Aging and Durability (AAD) Project is taking a proactive approach to extending the life of aircraft even before age is a concern. The project targets young aircraft, and develops technologies and materials to mitigate the effects of aging as early — and for as long — as possible.

Posted in: Articles, Spinoff, Imaging, Imaging and visualization, Non-destructive tests, Thermal testing

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3D Visualization Technologies: Seeing a World of Opportunity

Industries as diverse as architecture, engineering, construction, advertising, and medical have all incorporated an array of 3D visualization technologies into their design, development, and production processes. A rapidly expanding library of 3D modeling tools, 3D content, and 3D printing materials have made design more cost-effective and expedited the product-to-market process. But how exactly do 3D visualization technologies work? Taking a closer look at the science behind the innovation reveals a striking convergence in which state-of-the-art research processes meet a growing understanding of visual communication.

Posted in: Articles, Imaging, Imaging and visualization

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Precision Electronics and Laser Optics Expand Thermal Applications

Thermal imagers allow a user to see an object’s heat signature, and heat provides an entirely different set of performance data than the visible spectrum available to the naked eye. A fully radiometric camera will calculate a temperature value for every pixel seen on screen. The technician uses the thermal colors on screen to look for differences in temperature, between previous states or like components, without actually coming into direct contact with the device under test.

Posted in: Articles, Imaging, Imaging and visualization

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Ophthalmology Imaging: The Importance of Color Reproduction

Lumenera recently partnered with an ophthalmology diagnostic device manufacturer that required a camera for integration into its product. The goal was to obtain sharp retinal fundus images with accurate color reproduction for documentation, sharing, and storage of their results. A date stamp was also needed for later review and diagnosis.

Posted in: Application Briefs, Imaging, Imaging and visualization

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Multi-Touch Displays

American Industrial Systems (Irvine, CA) has announced industrial, widescreen, multi-touch HMI monitors and displays. A Projected Capacitive Sensor provides a gesture-based HMI interface that allows interactions such as pan, zoom, and rotate.

Posted in: Products, Imaging

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Lenses

Edmund Optics (Barrington, NJ) has doubled its offering of stock Zinc Selenide Plano-Convex (PCX) Lenses. The Zinc Selenide Plano-Convex Lenses are available individually, in diameters of 12.7, 25.4, and 50.8 mm, with a variety of focal lengths in both uncoated and 8-12 μm AR coated models. The anti-reflection coating has less than 0.5% reflection from 7.5 - 13.5 μm. A lens kit containing all nine uncoated 25.4-mm-diameter Zinc Selenide PCX Lenses is also offered. The Zinc Selenide Plano-Convex (PCX) Lenses have a usable transmission range of 600 nm to 16 μm with low dispersion.

Posted in: Products, Imaging

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High-Speed Camera

The S-MIZE EM high-speed camera from AOS Technologies AG (Baden, Switzerland) has built-in PowerPC architecture, which duplicates the control and status lines of a film camera. A range of available connectors also enable integration.

Posted in: Products, Imaging

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Frame Grabbers

BitFlow (Woburn, MA) provides an alternative to four-link CoaXPress (CXP) frame grabbers with its Karbon™ CXP2, a two-link frame grabber. BitFlow Karbon-CXP2 frame grabbers offer video acquisition speeds up to 6 Gigabits per second, and will send control commands and triggers at 20 Megabits per second — all over a 75 ohm coaxial cable in lengths up to 135 meters. Additionally, a maximum 13W of power can be transmitted to the camera along the cable. Karbon-CXP2 frame grabbers will support either one two-link camera or up to two single-link cameras.

Posted in: Products, Imaging

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