Psuedo-color display for enhanced visual target detection

Details Psuedo-color display for enhanced visual target detection Psuedo-color display for enhanced visual target detection

1994-11-23

1996-08-13

Lobo, Ian J.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

Display

342176, G01S 1300, G01S 706

Patent

active

055460917

ABSTRACT:
A pseudo-color display useful for enhanced target detection of two-dimensional images such as SAR data. The system includes a color display apparatus responsive to red, green and blue display control signals, and apparatus responsive to the input image data for remapping the respective input data for each pixel comprising the input image into respective red, green and blue display control signals in accordance with respective nonlinear red, green and blue remapping functions dependent on a single intensity threshold. This apparatus can include respective look-up tables stored in memory for each color, to be addressed by the respective pixel values. The display in one form also includes an image data processor which analyzes the input image data to adaptively select the intensity threshold, and calculate the respective remapping function values.

REFERENCES:
patent: 3665408 (1972-05-01), Erdahl et al.
patent: 4975861 (1990-12-01), Fujimoto
patent: 5124688 (1992-06-01), Rumball
patent: 5442379 (1995-08-01), Bruce et al.
"Synthetic Aperture Radar Image Processing Techniques Development and Evaluation," Final Report No. AFAL-TR-77-113, prepared by Hughes Aircraft Company for the Air Force Avionic Laboratory.
Rosenfeld et al, "Digital Picture Processing", Academic Press, Inc., second edition, vol. 1, p. 62.

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