Special Coverage


System-on-Module for Pre-Packaged Convenience

Increasing design complexity, coupled with compressed time to market, has been an engineering reality for some time. A system-on-module (SOM) addresses both of these real engineering issues. An engineer who chooses to use a SOM trades a very complex, chip-down circuit design for a much simpler SOM connector interface.

Posted in: Features, Articles


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: Physical Sciences, Imaging, Briefs


Technique for Finding Retro-Reflectors in Flash LIDAR Imagery

Orbital rendezvous and docking of two spacecraft is a topic of continued interest to NASA. For crewed missions, it is frequently the case that the target is cooperative (i.e., is equipped with some sort of navigation aid). If one of the relative navigation instruments is a Flash LIDAR, then this aid may be a suite of retro-reflectors. One of the most difficult aspects of this problem (especially at close range) is finding the retro-reflectors in a Flash LIDAR image amongst a substantial amount of clutter.

Posted in: Physical Sciences, Briefs


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: Imaging, Briefs


Frame Grabber Deployed in Robomotive Humanoid Robot

Robomotive and other humanoid robots equipped with 3D vision sensors are playing an increasing role in industrial automation, including in smaller binpicking set-ups where parts are constantly changing.

Posted in: Imaging, Application Briefs


Measuring Motion with Imaging Software

High-speed photography is as much of an engineering tool as an oscilloscope, spectrum analyzer, or logic analyzer. The photographic technique enables us to visualize and analyze motion, especially motion that is too fast for the human eye or conventional cameras to perceive.

Posted in: Imaging, Articles


LED Illumination in Simulation and Training

Since its inception, projection has been the dominant technology for displaying large, high-resolution images. Over the years, projectors have evolved to keep pace with advances in computer graphics and video sources, following the trends toward ever higher resolutions and ever larger screens.

Posted in: Imaging, Articles