US5644386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual recognition system for LADAR sensors
Assignee: Lockheed Martin Corp
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Filing: 1995-01-11
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Granted: 1997-07-01
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Expires: 2015-01-11
Abstract
Abstract A visual recognition system is disclosed for detecting a target within a scene. A LADAR system and method is employed for scanning laser light signals across a scene having a target to be characterized. Laser light reflected from the target is detected and processed into a three-dimensional image. The three-dimensional image is segmented to separate the target from the overall scene. Substantially, only the segmented target data is either displayed locally or transmitted via a narrow bandwidth transmission medium to a remote site for display. The invention finds particular application in military situations where enemy armor is detected and the segmented version of the armor is transmitted via SINCGARS.
Inventors
- 👤 Gary Kim Jenkins
- 👤 Bruno Jack Evans
- 👤 David Collis Williams, Jr.
- 👤 Arthur Steven Bornowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:39
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/88; G01S17/89; G01S17/86; G06; G06V; G06V20/00; G06V20/60; G06V20/64; G01S7/00; G01S7/48; G01S7/483; G01S7/486
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
72 words
A method of detecting an object in a scene at a point remote from the scene, comprising the steps of: laser scanning the scene to provide scan data representing a three-dimensional record of the scene including the object; processing the scan data at a local site to segment the object in the scene; and transmitting substantially only said segmented data to a remote site for viewing the object at the remote site.
Claim 2
Independent Claim
72 words
A method of detecting an object in a scene at a point remote from the scene, comprising the steps of: laser scanning the scene to provide scan data representing a three-dimensional record of the scene including the object; processing the scan data at a local site to segment the object in the scene; and transmitting substantially only said segmented data to a remote site for viewing the object at the remote site.
Claim 3
Dependent Claim
33 words
The method of detecting according to claim 1 wherein the step of transmitting includes transmitting at a video rate over a transmission medium having a bandwidth of 16 kilobits per second or less.
Claim 4
Dependent Claim
20 words
The method according to claim 2 wherein the video transmission rate is on the order of 7.9 megabytes per second.
Claim 5
Dependent Claim
25 words
The method according to claim 1 and including the step of displaying the segmented data at the remote site in one of three optional modes.
Claim 6
Dependent Claim
63 words
The method according to claim 1 wherein the step of processing the scan data comprises the steps of: a) detecting possible objects from the scan data; b) segmenting the detected scan data to objects from the scene; c) extracting features from the segmented data to distinguish between types of objects; and d) classifying the segmented objects and extracted features according to known classifications.
Claim 7
Dependent Claim
32 words
The method according to claim 5 wherein the step of detecting includes the step of determining the existence of one or more surfaces of a particular shape relative to a ground plane.
Claim 8
Dependent Claim
47 words
The method according to claim 5 wherein the step of segmenting includes the steps of determining a dimension of the object relative to a ground plane, and projecting such objects onto a ground plane, so that the object can be separated from its background in the scene.
Claim 9
Dependent Claim
45 words
The method according to claim 5 wherein the step of extracting includes the step of determining a dimension of the object by measuring the distance between generally minimum and maximum extents of the object along an axis substantially parallel to an axis of that object.
Claim 10
Independent Claim
102 words
A method of creating and transmitting an image of a target over a limited bandwidth transmission medium from an on-site location to a remote location, comprising the steps of: LADAR scanning on-site a scene to provide scan data representing an on-site, three-dimensional record of the scene including the target; processing the data on-site to separate segment data representative of the target from the remaining scene data; transmitting substantially only the segment data to a remote site over the limited bandwidth transmission media; and displaying the transmitted data at the remote site to provide an image of the target at the remote site.
Claim 11
Independent Claim
102 words
A method of creating and transmitting an image of a target over a limited bandwidth transmission medium from an on-site location to a remote location, comprising the steps of: LADAR scanning on-site a scene to provide scan data representing an on-site, three-dimensional record of the scene including the target; processing the data on-site to separate segment data representative of the target from the remaining scene data; transmitting substantially only the segment data to a remote site over the limited bandwidth transmission media; and displaying the transmitted data at the remote site to provide an image of the target at the remote site.
Claim 12
Dependent Claim
33 words
The method of detecting according to claim 9 wherein the step of transmitting includes transmitting at a video rate over a transmission medium having a bandwidth of 16 kilobits per second or less.
Claim 13
Dependent Claim
20 words
The method according to claim 10 wherein the video transmission rate is on the order of 7.9 megabytes per second.
Claim 14
Dependent Claim
25 words
The method according to claim 10 wherein the step of displaying includes the step of displaying the target image in one of three optional modes.
Claim 15
Dependent Claim
119 words
Apparatus for displaying a target in a target scene, comprising: a LADAR scanner for scanning the target scene to produce scan data representing a three-dimensional record of the scene including the target; a data processor coupled to the LADAR scanner for correlating the scan data to identify a segment of the data representative of substantially only the target in relation to the scene and for producing segmented data representative of substantially only the target; a transmitter coupled to the data processor for transmitting the segmented data to a site remote from the scene; and a display operatively coupled to the transmitter for displaying the transmitted data at the remote site, thereby to display the target at the remote site.
Claim 16
Dependent Claim
119 words
Apparatus for displaying a target in a target scene, comprising: a LADAR scanner for scanning the target scene to produce scan data representing a three-dimensional record of the scene including the target; a data processor coupled to the LADAR scanner for correlating the scan data to identify a segment of the data representative of substantially only the target in relation to the scene and for producing segmented data representative of substantially only the target; a transmitter coupled to the data processor for transmitting the segmented data to a site remote from the scene; and a display operatively coupled to the transmitter for displaying the transmitted data at the remote site, thereby to display the target at the remote site.
Claim 17
Dependent Claim
33 words
The apparatus for displaying a target according to claim 13, and including a transmission medium linking the transmitter and the remote site, and having a bandwidth of 16 kilobits per second or less.
Claim 18
Dependent Claim
28 words
The apparatus for displaying according to claim 14 wherein the transmitter is a video transmitter for transmitting at video rates on the order of 7.9 megabytes per second.
Claim 19
Dependent Claim
24 words
The apparatus for displaying according to claim 14 wherein said display has means for visually presenting the target in one of three optional modes.
Claim 20
Dependent Claim
76 words
The apparatus for displaying a target according to claim 14 wherein the data processor includes: a) means responsive to the scan data for detecting possible objects in the scene; b) means responsive to the detected scan data for segmenting the object from the scene; c) means for extracting features to distinguish between types of objects; and d) means responsive to the segmented scan data and the extracted features for classifying the object according to known classifications.
Claim 21
Dependent Claim
51 words
The apparatus for displaying a target according to claim 17 wherein the means for segmenting includes means for determining a dimension of the object relative to a ground plane, and for projecting such objects onto a ground plane, so that the object can be separated from its background in the scene.
Claim 22
Dependent Claim
48 words
The apparatus for displaying a target according to claim 17 wherein the means for extracting includes means for determining a dimension of the object by measuring the distance between generally minimum and maximum extents of the object along an axis substantially parallel to an axis of that object.
Claim 23
Dependent Claim
35 words
The apparatus for displaying a target according to claim 17 wherein the means for detecting includes means for determining the existence of one or more surfaces of a particular shape relative to a ground plane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-30 | 2000-12-30 | 2001-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-30 | 2004-12-30 | 2005-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-30 | 2008-12-30 | 2009-07-01 | $7700.00 | Window Closed / Lapsed |