Imaging

Machine Vision-Based Pose Estimation System

This system uses ellipse detection for spacecraft autonomous rendezvous and docking (AR&D). Goddard Space Flight Center, Greenbelt, Maryland During on-orbit servicing of non-cooperative satellites, the relative position of the satellite with respect to the servicing vehicle is needed. Non-cooperative satellites do not have devices to assist the pose estimation (such as markers or reflector), so a system that uses the natural features of the satellite to determine its pose needs to be developed.

Posted in: Briefs, TSP, Imaging

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Solar Doppler Shift-Based Solar Tracker

Potential applications may be in terrestrial solar thermal collectors. NASA’s Jet Propulsion Laboratory, Pasadena, California This solar tracker integrates a camera with a field of view (FOV) large enough to easily image the entire solar disc — co-boresited with a narrow-band spectrometer that measures the frequency of a Doppler shifted line — with an algorithm designed to drive zero Doppler shift rotation axis of the Sun.

Posted in: Briefs, Imaging

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Beam Shaping for CARS Measurements in Turbulent Environments

This approach obtains more reliable quantitative measurements in a scramjet engine. Langley Research Center, Hampton, Virginia Taking measurements in a scramjet engine is particularly challenging because of the harsh testing environment. Any probe inserted in the flow would generate shock waves, strongly perturbing the flow. Coherent Anti-Stokes Raman spectroscopy (CARS) is a non-intrusive laser-based measurement technique that has been implemented successfully to measure temperature and species concentrations in ducted scramjet engines.

Posted in: Briefs, Imaging

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Electronic Component Testing: A Non-contact Sport

As electronic circuit boards and components get smaller and more powerful, inherent heat can cause significant damage. Infrared thermography can identify hot spots, allowing for improved thermal management and greater advances in circuit board design.

Posted in: White Papers, Electronics, Electronics & Computers, Cameras, Imaging

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High Speed Thermal Cameras -- The Need for Speed

With today’s engineering challenges, the need for non-contact, high speed thermal measurement has never been greater. Traditional forms of temperature measurement such as thermocouples and spot pyrometers do not offer the resolution or speed required to fully characterize high speed thermal devices and provide adequate temperature measurement. Infrared cameras offer thousands, even millions, of points of non-contact high speed thermal measurement. However, not all infrared detectors are created equal. Here we’ll discuss the most common types of thermal infrared detectors and the capabilities as well as limitations of each. You’ll find this discussion helpful for solving applications involving fast moving targets or targets with fast thermal slew rates and the following information will provide the knowledge base to ensure measurements are reliable, avoiding a “garbage in, garbage out” situation.

Posted in: White Papers, Defense, Cameras, Imaging, Data Acquisition, Detectors

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The Advantages of Cooled IR Cameras

For many years, thermal imaging cameras have been used by scientists, researchers and R&D specialists for a wide range of applications, including industrial R&D, academics & research, non-destructive testing (NDT) & materials testing, and defense and aerospace. However, not all thermal cameras are created equal and for some applications dedicated, advanced thermal cameras with high speed stop motion capability are required in order to get accurate measurements.

Posted in: White Papers, Automotive, Cameras, Imaging

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Area-Scan Camera

The Basler beat area-scan camera from Basler (Ahrensburg, Germany/ Exton, PA) features 12 MP of resolution, progressive scan, and global shutter technology. Using the Camera Link interface, the cameras process 62 frames per second. Possible applications include measurement and identification; semiconductor and electronics manufacturing; license plate identification; and fluorescence microscopy. Basler’s free pylon Camera Software Suite, based on the GenICam standard, works with the Basler beat series. The software suite provides access to all functions and optimal operation of the camera.

Posted in: Products, Imaging, Manufacturing & Prototyping

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Area-Scan Camera

The SAPPHIRE S-25A70/CXP area-scan camera from Adimec (Eindhoven, the Netherlands/Stoneham, MA) is equipped with the CoaXPress V1.1 Quad interface (4 x CXP-6). CoaXPress CXP-6 Quad offers a peak transfer rate of 2 Gigapixels/s. Data transmission between the camera and frame grabber occurs at up to 25 Gbits/s (4 x 6.25 Gbits/s). The S-25A70/CXP camera utilizes the ON Semiconductor Vita25k global shutter image sensor. Additionally, the 25-Megapixel CMOS global shutter device delivers images of 5120 x 5120 pixels at a maximum of 73 full frames per second (fps). A defect pixel correction algorithm maintains image uniformity. At maximum speed, cable lengths over 30 meters are supported without the need for signal repeaters.

Posted in: Products, Imaging, Manufacturing & Prototyping

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CMOS Camera

The Imaging Source (Bremen, Germany/Charlotte, NC) has announced industrial cameras with the Sony Full HD WDR Sensor IMX236. The cameras are available as GigE (PoE) and USB 3 versions in monochrome and color. Other features include integrated WDR (Wide Dynamic Range) and a resolution from VGA to Full HD. The maximum frames-per-second at Full HD is 60 fps; 145 fps is possible at VGA resolution. All cameras are shipped with drivers for LabView, HALCON, MERLIC, VisionPro, DirectX, Twain, and NeuroCheck. End-user applications; an SDK consisting of .NET and ActiveX components; and a C++ class library are included. The cameras also ship with IC Capture, end-user software to set all camera parameters.

Posted in: Products, Imaging, Manufacturing & Prototyping

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High-Speed Camera

Photron (San Diego, CA) has released the FASTCAM Mini WX 50 camera. The device provides up to 750 frames per second at full four-megapixel resolution; 1080 HD performance is achieved at 1,500 frames per second. The 120 x 120 x 99-mm Mini WX 50 weighs 3.5 lbs and features 12-bit ADC. Memory options range from 4 GB to 8 GB, and up to 16 GB with Gigabit Ethernet interface capability. Light sensitivity is measured to the ISO Ssat 12232 standard: ISO 6,400 monochrome and ISO 2,000 color. The high-speed cameras also feature Fmount and C-mount lens mounts.

Posted in: Products, Imaging, Manufacturing & Prototyping

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