| Enhancement of Video Imagery by Modified Intensity-Dependent Spatial Summation |
JUL 92 |
17 pages |
| Authors:
Phillip G. Harnden; Frank F. Holly; Dale R. Shires; Salvatore P. Schipani; C. A. Chang; HUMAN ENGINEERING LAB ABERDEEN PROVING GROUND MD
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 | A contract-enhancement algorithm is described which avoids the flat noisy appearance often produced by histogram equalization. This algorithm is based on the intensity-dependent spatial summation (IDS) model purported by Cornsweet and Yellott. The model's initial intent was to demonstrate its ability to replicate certain effects in human vision. Its implementation as an image- enhancement routine has predominantly emphasized its ability to enhance edges in imagery. The model has been modified ... |
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| Visual and Optical Analyses of XM-29 and M-24 Protective Masks. |
JUN 1977 |
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| Authors:
Roger W. Wiley; Isaac Behar; Wun C. Chiou; Frank F. Holly; Emery R. Spring; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER ALA
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 | USAARL was tasked to provide medical guidance and assessment relative to visual and optical aspects in the development of the XM-29 protective mask. In fulfillment of this responsibility, complete optical and visual tests have been completed on the new mask prior to its validation. To provide baseline and comparison information, identical optical testing was also performed on the M-24 aviator's protective mask, and visual performance testing was completed with the ... |
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| Reduction of Glare from the Landing Lights of the OH-58: An Evaluation of Four Potential Solutions. |
MAY 1976 |
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| Authors:
Frank F. Holly; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER ALA
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| Four potential solutions to the OH-58 landing lights glare problem were evaluated. The four solutions consisted of: (1) placing a metal shield beneath each landing light; (2) placing shields on each side of the cockpit extending out laterally and forward from the instrument panel; (3) taping over the inside one-half of each chinbubble; and (4) taping over the sides of the plexiglass sheet and light well. The first three solutions ... |
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| The Use of Opaque Louvres and Shields to Reduce Reflections within the Cockpit: A Trigonometrical and Plane Geometrical Approach. |
SEP 1975 |
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| Authors:
Chun K. Park; Frank F. Holly; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER ALA
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| Opaque shields can be used to channel light and thereby reduce reflections within the cockpit. These shielding devices range from the standard glare shield on top of the instrument panel to the more experimental use of Light Control Film and Micromesh for this purpose. Because of the need to determine the best position, width, spacing, etc. of these shielding devices, it was felt that s systematic approach would be highly ... |
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| The Use of Opaque Louvres and Shields to Reduce Reflections within the Cockpit: A Mathematical Treatment. |
JUN 1975 |
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| Authors:
Wun C. Chiou; Frank F. Holly; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER ALA
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| Opaque shields can be used to channel light and thereby reduce reflections in the cockpit. These shielding devices range from the standard glare shield on top of the instrument panel to the more experimental use of Light Control Film and Micromesh for this purpose. Because of the need to determine the best position, width, spacing, etc. of these shielding devices, it was felt that a systematic approach would be highly ... |
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