Roger T May

US Patent:

49282581, May 22, 1990

Filed:

May 8, 1989

Appl. No.:

7/349558

Inventors:

Roger A. May - Winter Park FL

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

G06F 1531

US Classification:

36472417

Abstract:

This technique involves digitally filtering data by determining the median of data values instead of mean or some other algebraic combination. It is unique in that the data used for the median calculation utilizes previous as well as the new data. This filter structure can be used in both time domain and spatial domain. Also, the filter size can easily be varied to permit adapting its size to system gain.

US Patent:

H7137, Nov 7, 1989

Filed:

Mar 15, 1988

Appl. No.:

7/173859

Inventors:

Roger A. May - Longwood FL
Frank B. Link - Orlando FL

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

G06K 948

US Classification:

364517

Abstract:

A segment labeler/extractor outputs segments of video data stored in Random Access Memory for feature extraction and classification as targets. This function is accomplished by labeling the segments of a video frame as the segments are stored in a mass segment memory, sorting the mass segment memory to extract individual segment data, and storing this data in a segment memory where it can be accessed by an algorithm processor. Included in the subject invention is a segment labeler which consists of a segment label filter, adjacent label filter, memory, and sorter. The inputs to the segment labeler are a segment designator discrete which is set for only pixels which are in segments and a segment boundary designation discrete which is set for only pixels which are in segments and on the perimeter of the segment. The output of the segment labeler is a unique group of labels which define each segment. The groups of labels are then passed on to a control processor and handed to a segment extractor upon request.

US Patent:

48148849, Mar 21, 1989

Filed:

Oct 21, 1987

Appl. No.:

7/110918

Inventors:

William K. Johnson - Ft. Collins CO
Roger A. May - Winter Park FL

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

H04N 5272

US Classification:

358183

Abstract:

A window generator is disclosed which provides a unique 6 bit target identification number for up to 63 target areas and one background area in a frame of serially scanned data. Any number of target areas can be identified by increasing memory width. The target numbers allow video pipeline processing circuitry to collect statistics separately for each target area. A target number is provided for each pixel as the image is scanned in a raster can format. The target areas are defined as rectangular sectors with background at all other non-target locations. The window generator has contained in a RAM the data necessary to define the window areas. This data is calculated and formatted off-line by a microprocessor and downloaded into the RAM. Information contained in the RAM represents the number of pixels between any two successive target area corners along with a two bit command word.

US Patent:

46790861, Jul 7, 1987

Filed:

Feb 24, 1986

Appl. No.:

6/831894

Inventors:

Roger A. May - Longwood FL

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

H04N 5213

US Classification:

358167

Abstract:

Noise smoothing of imaging data is performed using frame integration, by averaging pixels over time instead of space, without resulting in a smear of moving objects by: sensing image motion; and enabling frame integration on only stationary scene pixels. Image motion is sensed by: producing a differencing signal which indicates the difference between new image data and frame integrated data; and comparing the differencing signal with a threshold signal. When the threshold signal has a value which approximately equals expected image noise, then the image data processed by a particular pixel may be deemed non-moving when the difference signal is less than the threshold signal, and the image data may be deemed to depict moving objects otherwise. Finally, image data is conducted unprocessed to the display for moving scene pixels, while frame integrated image data is conducted to the display for stationary scene pixels.