Patent US5270924A successfully refreshed from Google Patents.
US5270924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmological image processor
Assignee: Topcon Corp
•
Filing: 1991-11-27
•
Granted: 1993-12-14
•
Expires: 2011-11-27
Abstract
Abstract The fundus image processor of this invention comprises an image inputting means including a fundus camera for inputting electronic images of a subject's eye, video camera, magnetic disk apparatus and still video apparatus. Further, this apparatus also comprises a display means for displaying the fundus image input by the image inputting means. Further, the apparatus also comprises an image identification/processing means for identifying the state of the image input by the inputting means from the positions of light and dark regions on the image, and causes the results of this identification to be displayed on the display means.
Inventors
- 👤 Masayuki Hideshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:33
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
94 words
An ophthalmological image processor comprising: inputting means for inputting an electronic image of a subject's eye; display means for displaying the image input by said inputting means; and image identification/processing means for identifying at least one of whether said image is that of the left or right eye, whether said image is a front or back image, and whether said image is a top, bottom, left, or right image by the positions of light and dark regions on the image, and causing the result of this identification to be displayed by said display means.
Claim 2
Dependent Claim
94 words
An ophthalmological image processor comprising: inputting means for inputting an electronic image of a subject's eye; display means for displaying the image input by said inputting means; and image identification/processing means for identifying at least one of whether said image is that of the left or right eye, whether said image is a front or back image, and whether said image is a top, bottom, left, or right image by the positions of light and dark regions on the image, and causing the result of this identification to be displayed by said display means.
Claim 3
Dependent Claim
19 words
An ophthalmological image processor as defined in claim 1 wherein said image inputting means is an image pickup means.
Claim 4
Dependent Claim
18 words
An ophthalmological image processor as defined in claim 2 wherein said image inputting means is a fundus camera.
Claim 5
Dependent Claim
18 words
An ophthalmological image processor as defined in claim 2 wherein said image inputting means is a video camera.
Claim 6
Dependent Claim
32 words
An ophthalmological image processor as defined in claim 1 wherein said image inputting means is a video camera installed at a certain height above a light box provided with a film holder.
Claim 7
Dependent Claim
19 words
An ophthalmological image processor as defined in claim 1 wherein said image inputting means is a magnetic disk apparatus.
Claim 8
Dependent Claim
19 words
An ophthalmological image processor as defined in claim 6 wherein said magnetic disk apparatus is a still video apparatus.
Claim 9
Dependent Claim
19 words
An ophthalmological image processor as defined in claim 6 wherein said magnetic disk apparatus is a magnetic card reader.
Claim 10
Dependent Claim
31 words
An ophthalmological image processor as defined in claim 6 wherein said magnetic disk apparatus is a read/write device which can record and reproduce said identification result together with a fundus image.
Claim 11
Dependent Claim
40 words
An ophthalmological image processor as defined in claim 1 characterized in that said image is identified as being that of either the left or right eye by determining whether the left or right half of the input image is brighter.
Claim 12
Dependent Claim
61 words
An ophthalmological image processor as defined in claim 1 wherein said identification means identifies the state of said image by considering the whole effective surface enclosed within the image of the subject's eye to be divided into a plurality of areas, and determining in which of said arcas there is a region having a brightness greater than a predetermined reference level.
Claim 13
Dependent Claim
48 words
An ophthalmological image processor as defined in claim 11 characterized in that said identification means identifies whether said image is that of the left or right eye by determining whether regions having a brightness greater than said reference level are more numerous in a left or right area.
Claim 14
Dependent Claim
69 words
An ophthalmological image processor as defined in claim 1 characterized in that said image inputting means is a photographic image reader for reading a fundus photograph having a mark for identifying left, right, front and back, and said identifying means issues a warning to the operator if left, right, back or front of said fundus photograph are incorrectly input when the photograph is read by said photographic image reader.
Claim 15
Dependent Claim
79 words
An ophthalmological image processor as defined in claim 1 characterized in that said image inputting means is a photographic image reader for reading a fundus photograph having a mark for identifying left, right, front and back, and said identifying means performs a coordinate ransformation on incorrectly input image position data such that it is correctly input if left, right, back or front of said fundus photograph are incorrectly input when the photograph is read by said photographic image reader.
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) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |