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 Title: |
US5627915:
Pattern recognition system employing unlike templates to detect objects having distinctive features in a video field
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Rosser, Roy; Princeton, NJ
Das, Subhodev; Princeton, NJ
Tan, Yi; Plainsboro, NJ
von Kaenel, Peter; Plainsboro, NJ
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| Assignee: |
Princeton Video Image, Inc., Princeton, NJ
other patents from PRINCETON VIDEO IMAGE, INC. (722901) (approx. 9)
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| Published / Filed: |
1997-05-06
/ 1995-01-31
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| Application Number: |
US1995000381088
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| IPC Code: |
Advanced:
G06K 9/68;
Core:
more...
IPC-7:
G06K 9/68;
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| ECLA Code: |
G06K9/68A1;
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| U.S. Class: |
Current:
382/219;
382/278;
Original:
382/219;
382/278;
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| Field of Search: |
382/190,195,209,219,226,227,278
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| Priority Number: |
| 1995-01-31 |
US1995000381088 |
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| Abstract: |
A system for inserting images into live video fields includes a method for rapidly and efficiently identifying landmarks and objects. Initially a first template, having a first pattern similar to one of the distinctive features of the object, is passed over the video field and compared to it in order to preliminarily identify at least one possible distinctive feature as a candidate. A second template is then created by taking one of the major elements of the distinctive feature candidate and extending that element all the way across the second template and then comparing it to the distinctive feature candidate. This eliminates one or more possible falsely identified features. A third template is then created having a pattern formed from another major element of said distinctive feature and extending it all the way across the third template. The third template is then likewise passed over the distinctive feature candidate and compared therewith in order to eliminate still further falsely identified features. The method is continued until all possible false alarm candidates have been eliminated. The process is then repeated in order to preliminarily identify two or three landmarks of the target object. The locations of those objects are then compared to a geometric model to further verify if the object has been correctly identified. The methodology can be tested against a video taped program to determine if it accurately identifies objects.
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| Attorney, Agent or Firm: |
Woodbridge, Richard C. ;
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| Primary / Asst. Examiners: |
Johns, Andrew;
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| INPADOC Legal Status: |
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| Designated Country: |
AL AM AP AT AZ BB BG BR BY CA CH CN CZ DE DK EE EP ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN
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| Family: |
Show 4 known family members
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First Claim:
Show all 27 claims |
We claim:
1. A pattern recognition method for recognizing an object having distinctive features as imaged in a video field, said method comprising the steps of:
- (a) passing a first template having a first pattern similar to one of said distinctive features over said video field and comparing the same in order to preliminarily identify at least one possible distinctive feature of said object which could either be a correctly identified distinctive feature or one of a plurality of incorrectly identified features;
- (b) passing a second template having a second pattern different from said first template pattern over said possible distinctive feature and comparing the same in order to determine if said possible distinctive feature is at least one of said incorrectly identified features;
- (c) passing a third template having a third pattern different from said first and second template patterns over said possible distinctive feature and comparing the same in order to determine if said possible distinctive feature is at least another of said incorrectly identified features;
- (d) repeating steps (b) and (c) above until all possible likely falsely identified features have been eliminated as possible candidates for said distinctive feature;
- (e) selecting said second pattern, wherein said second pattern includes a first element of said distinctive feature which extends substantially completely across said second template,
- wherein said correctly identified feature is accurately identified by process of elimination.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 77 U.S. patent(s) that reference this one
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