US6094498A
Expired / Lapsed
US
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Face image processing apparatus employing two-dimensional template
Assignee: Mitsubishi Electric Corp
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Filing: 1999-11-30
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Granted: 2000-07-25
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Expires: 2019-11-30
Abstract
Abstract A face image processing apparatus is capable of extracting images of nostrils and eyes accurately and at high speed without being influenced by accessory information by employing one or a plurality of two-dimensional templates each of which expresses exactly the features of the nostrils and the eyes though the amount of information thereof is small. The face image processing apparatus includes: a face image inputting element for inputting a face image; an eye area setting element for estimating an area, in which an eye candidate is present, from the inputted face image; an eye candidate extracting element for converting the eye candidate into the data having a plurality of luminance values within the eye area; and an eye deciding element for deciding eyes within the extracted candidates and their positions.
Inventors
- 👤 Tomoko Okumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:34
CPC Classifications
G; G06; G06T; G06T11/00; G06V; G06V40/00; G06V40/10; G06V40/16; G06V40/168; G06V40/171; G06V40/18; G06V40/19; A; A61; A61B; A61B5/00; A61B5/117; A61B5/1171; A61B5/1176
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
A face image processing apparatus comprising: face image inputting means for inputting a face image; eye area setting means for estimating an area, in which an eye candidate is present, from the inputted face image; eye candidate extracting means for converting the eye candidate into the data having a plurality of luminance values within the eye area; and eye deciding means for deciding eye s within the extracted candidates and their positions.
Claim 2
Dependent Claim
72 words
A face image processing apparatus comprising: face image inputting means for inputting a face image; eye area setting means for estimating an area, in which an eye candidate is present, from the inputted face image; eye candidate extracting means for converting the eye candidate into the data having a plurality of luminance values within the eye area; and eye deciding means for deciding eye s within the extracted candidates and their positions.
Claim 3
Dependent Claim
51 words
A face image processing apparatus according to claim 1 wherein either said nostril candidate extracting means or said eye candidate extracting means carries out a simple matching in relative luminance between a watched pixel and its peripheral pixels using a two-dimensional template and at least one threshold which are previously set.
Claim 4
Dependent Claim
39 words
A face image processing apparatus according to claim 1, wherein either said nostril candidate extracting means or said eye candidate extracting means limits an object, for which the matching is carried out, further using a variable extraction luminance threshold.
Claim 5
Dependent Claim
33 words
A face image processing apparatus according to claim 1, wherein either said nostril candidate extracting means or said eye candidate extracting means employs a plurality of variable extraction luminance thresholds or two-dimensional templates.
Claim 6
Dependent Claim
35 words
A face image processing apparatus according to claim 1, wherein either said nostril candidate extracting means or said eye candidate extracting means relaxes the two-dimensional template in accordance with the degree of the image extraction.
Claim 7
Dependent Claim
133 words
A face image processing apparatus comprising: face image inputting means for inputting a face image; nostril area setting means for estimating an area, in which a nostril candidate is present, from the inputted face image; nostril candidate extracting means for converting the nostril candidate into the data having a plurality of luminance values within the nostril area; nostril deciding means for deciding nostrils within the extracted nostril candidate; eye area setting means for estimating an area, in which an eye candidate is present, from the decided nostrils; eye candidate extracting means for converting the eye candidate into the data having a plurality of luminance values within the eye area; and eye deciding means for deciding the eyes within the candidate which has been extracted by said eye candidate extracting means and their positions.
Claim 8
Dependent Claim
133 words
A face image processing apparatus comprising: face image inputting means for inputting a face image; nostril area setting means for estimating an area, in which a nostril candidate is present, from the inputted face image; nostril candidate extracting means for converting the nostril candidate into the data having a plurality of luminance values within the nostril area; nostril deciding means for deciding nostrils within the extracted nostril candidate; eye area setting means for estimating an area, in which an eye candidate is present, from the decided nostrils; eye candidate extracting means for converting the eye candidate into the data having a plurality of luminance values within the eye area; and eye deciding means for deciding the eyes within the candidate which has been extracted by said eye candidate extracting means and their positions.
Claim 9
Dependent Claim
51 words
A face image processing apparatus according to claim 2, wherein either said nostril candidate extracting means or said eye candidate extracting means carries out a simple matching in relative luminance between a watched pixel and its peripheral pixels using a two-dimensional template and at least one threshold which are previously set.
Claim 10
Dependent Claim
39 words
A face image processing apparatus according to claim 6, wherein either said nostril candidate extracting means or said eye candidate extracting means limits an object, for which the matching is carried out, further using a variable extraction luminance threshold.
Claim 11
Dependent Claim
33 words
A face image processing apparatus according to claim 6, wherein either said nostril candidate extracting means or said eye candidate extracting means employs a plurality of variable extraction luminance thresholds or two-dimensional templates.
Claim 12
Dependent Claim
35 words
A face image processing apparatus according to claim 6, wherein either said nostril candidate extracting means or said eye candidate extracting means relaxes the two-dimensional template in accordance with the degree of the image extraction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-07-25 | 2004-01-24 | 2004-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-25 | 2008-01-24 | 2008-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-25 | 2012-01-24 | 2012-07-25 | $7700.00 | Window Closed / Lapsed |