Imaging

Access our comprehensive library of technical briefs on imaging, from engineering experts at NASA and major government, university, and commercial laboratories.

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Briefs: Sensors/Data Acquisition
An alternative approach has been devised for encoding image data in compliance with JPEG 2000, the most recent still-image data- compression standard of the Joint Photographic Experts Group....
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Briefs: Test & Measurement
Automated Camera Array Fine Calibration
Using aerial imagery, the JPL FineCalibration (JPL FineCal) software automatically tunes a set of existing CAHVOR camera models for an array of cameras. The software finds matching features in the overlap region between images from adjacent cameras, and uses these features to refine the camera models. It is...
Briefs: Imaging
Automatic Rock Detection and Mapping from HiRISE Imagery
This system includes a C-code software program and a set of MATLAB software tools for statistical analysis and rock distribution mapping. The major functions include rock detection and rock detection validation. The rock detection code has been evolved into a production tool that can be used...
Briefs: Electronics & Computers
A hand-held instrument that would include an ultrasonic camera has been proposed as an efficient means of reading matrix symbols. The proposed instrument could be operated without...
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Briefs: Imaging
A battery-powered, pen-sized, portable instrument for measuring molecular fluorescence spectra of chemical and biological samples in the field has been proposed. Molecular fluorescence...
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Briefs: Imaging
An architecture for back-illuminated complementary metal oxide/semiconductor (CMOS) and charge-coupled-device (CCD) ultraviolet/visible/near infrared-light image sensors, and a method...
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Briefs: Imaging
A compact, high-resolution, two-dimensional excitation-emission matrix fluorometer (EEMF) has been designed and built specifically for use in identifying and measuring the...
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Briefs: Imaging
A metrology system that contains no moving parts simultaneously measures the bearings and ranges of multiple reflective targets in its vicinity, enabling determination of the...
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Briefs: Imaging
The NASA Ames hyperwall is a display system designed to facilitate the visualization of sets of multivariate and multidimensional data like those generated in complex engineering and...
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Briefs: Imaging
Phase Sensor for Aligning a Segmented Telescope Mirror
A phase sensor has been developed for use in aligning a segmented telescope mirror to within a fraction of a wavelength in piston. (As used here, "piston" signifies displacement of a mirror segment along the optical axis of the telescope.) Such precise alignment is necessary in order to realize...
Briefs: Semiconductors & ICs
N-Type d Doping of High-Purity Silicon Imaging Arrays
A process for n-type (electron-donor) delta (d) doping has shown promise as a means of modifying back-illuminated image detectors made from n-doped high-purity silicon to enable them to detect high-energy photons (ultraviolet and x-rays) and low-energy charged particles (electrons and ions)....
Briefs: Sensors/Data Acquisition
A hyperspectral imaging system of high spectral and spatial resolution that incorporates several innovative features has been developed to incorporate a focal-plane scanner (U.S. Patent 6,166,373). This...
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Briefs: Photonics/Optics
Flight-control and navigation systems inspired by the structure and function of the visual system and brain of insects have been proposed for a class of developmental miniature robotic...
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Briefs: Imaging
A new software equipped with novel image processing algorithms and graphical-user-interface (GUI) tools has been designed for automated analysis and processing of...
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Briefs: Photonics/Optics
Theodolite With CCD Camera for Safe Measurement of Laser-Beam Pointing
The simple addition of a charge-coupled-device (CCD) camera to a theodolite makes it safe to measure the pointing direction of a laser beam. The present state of the art requires this to be a custom addition because theodolites are manufactured without CCD cameras as standard or...
Briefs: Photonics/Optics
A portable instrument denoted a phase-retrieval camera (PRC) is designed to enable the testing of large, lightweight optics in the presence of vibrations and atmospheric turbulence. The development of...
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Briefs: Photonics/Optics
Software Automates Processing of SAR Image Data
The Automated SAR Image Processor (ASIP) computer program increases the efficiency of production of scientifically useful imagery from raw synthetic-aperture-radar (SAR) image data. In the absence of ASIP, the processing of SAR data is a labor-intensive task, often involving supporting personnel, that...
Briefs: Electronics & Computers
Active-pixel integrated-circuit image sensors that can be programmed in real-time to effect artificial reconfigurable vision on demand have been developed and demonstrated. In...
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Briefs: Electronics & Computers
Automated Detection of Streaks in Rocket-Engine Plumes
A high-speed observer (HSO) system comprising a high-frame-rate digital video camera and a high-speed computer that processes the camera output has been developed for use in monitoring the exhaust plume of the space shuttle main engine (SSME) during tests. The HSO system is designed to analyze...
Briefs: Photonics/Optics
Software for Analyzing Root Causes of Process Anomalies
Root Cause Analysis (RoCA) is a computer program that assists analysts in understanding the root causes of process anomalies. As used here, “process anomalies” includes incidents that have caused, or that can potentially cause, injuries to personnel, damage to facilities, abnormal costs,...
Briefs: Materials
Annealing has been found to be an effective means of tailoring the height of a Schottky barrier between gold and gallium nitride. This finding offers promise for the development of improved...
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Briefs: Imaging
High-Performance Processor of Hyperspectral Images
The Remote Sensing Hyperspectral Engine (RSHE) is a special-purpose, portable computer that performs high-performance processing of hyperspectral image data collected by a remote-sensing optoelectronic apparatus. Typically, the remote-sensing apparatus is airborne or spaceborne, the images are of...
Briefs: Photonics/Optics
An optoelectronic system discussed herein measures the state of alignment (SOA) of an object under test in four of its six degrees of freedom (DOFs). This system was originally...
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Briefs: Imaging
A new design for a complementary metal oxide/semiconductor (CMOS) snapshot imaging device of the photodiode-based, active-pixel-sensor (APS) type calls for features to prevent...
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Briefs: Imaging
An optoelectronic system senses rotational and translational misalignment between two objects. The system might be used in such diverse applications as aligning construction equipment, mating parts of...
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Briefs: Sensors/Data Acquisition
Software for Scheduling Use of Shared Resources
The Quick Utility for Intelligence Planning and Scheduling (QUIPS) computer program automates the scheduling of resources that must be shared among multiple tasks or groups. Designed to aid coordination of military intelligence operations at the division and brigade levels, QUIPS might also prove...
Briefs: Imaging
Software for Processing SAR Images of the Polar Oceans
The RADARSAT/ERS-1,2 Geophysical Processor System (RGPS) is an automated system of hardware and software that processes synthetic-aperture-radar (SAR) images of ice and open water in polar oceans to generate higher-level geophysical-data products. Information in such products includes the age...

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