Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Norman R. Guivens"'
Autor:
Philip D. Henshaw, Norman R. Guivens
Publikováno v:
SPIE Proceedings.
Unconventional imaging techniques obtain high resolution images of objects at very long ranges without the use of large diameter primary optical elements. Cost and weight constraints lead us to consider methods for using sparse arrays of subapertures
Autor:
Philip D. Henshaw, Norman R. Guivens
Publikováno v:
SPIE Proceedings.
The authors have developed a prototype model of optical detection systems based on a set of primitive mathematical operations that are characteristic of elements in a detection system. The model can cascade these operations arbitrarily to simulate ve
Autor:
Norman R. Guivens, Philip D. Henshaw
Publikováno v:
SPIE Proceedings.
The concept of visual programming is a powerful, new way to approach the simulation of optical detection systems. The visual programming interface described here is being designed to allow the user to create and manipulate block diagrams to describe
Autor:
Norman R. Guivens
Publikováno v:
SPIE Proceedings.
Illumination subsystems are critical elements of most machine vision and inspection systems. The linear response of most optical detectors generally requires much more uniform illumination than the logarithmic response of the human eye to achieve a s
Autor:
Norman R. Guivens
Publikováno v:
SPIE Proceedings.
Optical sensor simulations based on high fidelity models of illumination, scenes, cameras, and signal processors can accurately predict the performance of machine vision systems. These simulations typically render images of the scene from solid model
Autor:
Norman R. Guivens, Philip D. Henshaw
Publikováno v:
SPIE Proceedings.
Sensor simulation codes such as SPARTA''s optical sensor simulation (SENSORSIM) and the Defense Laser-Target Signatures (DELTAS) Code require a high fidelity computer model capable of simulating any type of detection system that might be employed in
Autor:
Philip D. Henshaw, Norman R. Guivens
Publikováno v:
SPIE Proceedings.
This paper describes a performance metric for the evaluation of active coherent imaging systems. This metric can be determined for any system using analytical considerations or measured using standard targets. It has implications for comparison of di
Autor:
Philip D. Henshaw, Norman R. Guivens
Publikováno v:
SPIE Proceedings.
Many impressive developments in image simulation technology have led to extensive use of synthetic images in the motion picture industry for special effects and animation, and also in applications such as aircraft flight simulators. Although these im
This Final Report addresses key issues for development of a multiple aperture imaging system which could perform high resolution imaging at very long ranges for surveillance or discrimination. Multiple aperture systems can be used to realize extremel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3be0da8dfafb408476b8774835dbdf36
https://doi.org/10.21236/ada237759
https://doi.org/10.21236/ada237759
Autor:
Norman R. Guivens, Philip D. Henshaw
Publikováno v:
SPIE Proceedings.
Retrieval of the phase of a complex analytic function when only the amplitude is known has application to many real-world problems. For example, phase retrieval has been used in astronomical speckle imaging [1] and is being considered for laser speck