US3732366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video pattern recognition system
Assignee: OKLAHOMA SCHOOL OF ELECTRICAL
•
Filing: 1971-08-13
•
Granted: 1973-05-08
•
Expires: 1991-08-13
Abstract
Abstract This invention comprises a video camera and a video tape carrying previously recorded video patterns, and means for comparing the camera-generated signal pattern with the playedback tape recorded signal pattern to see whether they are similar. The sweep signals of the camera are slaved to the playback device so that the sweeps are synchronous. The brightness signals are continuously compared and an average judgment made of the similarities of the two patterns. Means are provided to normalize the pattern generated by the camera as regards size, angular position and position in the field of view. Two principal applications of this system are described. These are: A. Searching a pre-recorded file of patterns on video tape for frames which are similar to a pattern exposed to the camera, and B. Comparing a current pattern of a field of view with a pattern recorded at a previous time of the same field of view, to indicate changes in the camera-produced pattern.
Inventors
- 👤 V Bolie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:58
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/189; G08B13/194; G08B13/196; G08B13/19602; G06; G06V; G06V10/00; G06V10/10; G06V10/20; G06V10/24; G06V10/70; G06V10/74; G06V10/75; G08B13/19613; G08B13/19634
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
101 words
A video image recognition system, comprising: a. electronic image scanning means; b. electronic image storage and playback means comprising a strip of video tape with a plurality of different electronic images recorded thereon, each of said plurality of images identified by a different index, and means responsive to said waveform agreement detector means to display the index of the image on said tape; c. means to synchronize the sweep signals of said scanning and playback means; d. waveform agreement detector means responsive to said scanning and playback means; and e. means to utilize the output of said waveform agreement detector means.
Claim 2
Dependent Claim
101 words
A video image recognition system, comprising: a. electronic image scanning means; b. electronic image storage and playback means comprising a strip of video tape with a plurality of different electronic images recorded thereon, each of said plurality of images identified by a different index, and means responsive to said waveform agreement detector means to display the index of the image on said tape; c. means to synchronize the sweep signals of said scanning and playback means; d. waveform agreement detector means responsive to said scanning and playback means; and e. means to utilize the output of said waveform agreement detector means.
Claim 3
Dependent Claim
47 words
The system as in claim 1 wherein said means to utilize the output of said waveform agreement detector means comprises threshold response means comprising means to produce a non-zero output voltage if the output voltage of said waveform agreement detector means rises above a pre-set threshold level.
Claim 4
Dependent Claim
31 words
The system as in claim 1 including video image normalizer means associated with said electronic image scanning means for adjusting the size, position and angle of the image to preselected conditions.
Claim 5
Dependent Claim
46 words
The system as in claim 1 including means for recording said index for each image recorded on said tape, in the form of a multibit audiotone record on said tape, and including audiotone decoder means and multibit gate means responsive to said waveform agreement detector means.
Claim 6
Dependent Claim
77 words
The system as in claim 1 wherein said waveform agreement detector means comprises: a. amplifier meanS to amplify the difference in voltages of the video signals provided by said image scanning means and said image playback means to provide a difference signal; b. means to obtain the absolute magnitude of said difference signal; and c. low-pass filter means to accumulate the average of said absolute magnitude over a time interval spanning at least one complete image scan.
Claim 7
Dependent Claim
57 words
The system as in claim 1 wherein said image scanning means comprises a television camera, said storage and playback means comprises a television recorder and tape, the sweep circuits of said camera responsive to the sweep signals of said recorder, the video intensity signals generated by said camera and said recorder delivered to said waveform agreement detector.
Claim 8
Independent Claim
56 words
The system as in clam 6 wherein said waveform agreement detector comprises means to continuously compare the video intensity signals derived from said camera and said recorder and to provide a substantial voltage output if said two video intensity signals are in substantial agreement over a time interval equivalent to at least one complete image scan.
Claim 9
Independent Claim
56 words
The system as in clam 6 wherein said waveform agreement detector comprises means to continuously compare the video intensity signals derived from said camera and said recorder and to provide a substantial voltage output if said two video intensity signals are in substantial agreement over a time interval equivalent to at least one complete image scan.
Claim 10
Dependent Claim
56 words
The system as in claim 1 including a recording and storage means synchronized with said storage and playback means, with common storage means, said common storage means comprising loop tape means, on which video image signals are recorded at said recording means, and from which said video image signals are played back by said playback means.
Claim 11
Dependent Claim
36 words
The system as in claim 8 including means to indicate when the video image signals from said camera and said tape are not in essential agreement for a period corresponding to one scan of said images.
Claim 12
Dependent Claim
32 words
The system as in claim 1 including centripetal enhancement means associated with said waveform agreement detector means for enhancing the sensitivity of said detector means for different diametral areas of the image.
Claim 13
Dependent Claim
97 words
The system as in claim 10 in which said centripetal enhancement means comprises: a. horizontal and vertical sweep generator means providing voltages corresponding respectively to x and y; b. parabolic units responsive respectively to voltages x and y to produce voltages corresponding to (1-x2) and (1-y2) respectively; c. first analog multiplier means to provide an output corresponding to m (1-x2) (1-y2) where m is a multiplication coefficient; and d. second analog multiplier means responsive to said first multiplier means to provide a voltage output corresponding to the product me'', where e'' is the said absolute magnitude signal.
Claim 14
Dependent Claim
22 words
The system as in claim 1 including dilator means to adjust the mean diameter of the video image generated by said system.
Claim 15
Dependent Claim
9 words
The system as in claim 12 including rotator means.
Claim 16
Dependent Claim
9 words
The system as in claim 13 including translator means.
References Cited (Backward Citations)
US3476197A
Cited
US3643018A
Cited
US3610822A
Cited
US3598907A
Cited
US3593286A
Cited
US3627918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |