Patent US1524095A successfully refreshed from Google Patents.
US4903310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of automatically determining imaged body posture in medical image display
Assignee: Fujifilm Holdings Corp
•
Filing: 1988-04-20
•
Granted: 1990-02-20
•
Expires: 2008-04-20
Abstract
Abstract An accumulative histogram of an image signal bearing a transmitted image of a human body is generated. The rate of change of the accumulative histogram is determined in a predetermined region of the image, and the imaged posture of the image is determined from the rate of change. Alternatively, to determine the imaged posture, the separation of a histogram is determined, or the pattern of the histogram is compared with a plurality of reference histogram patterns. The derivative of second order of a function approximated by the histogram pattern may be checked for its sign, or the histogram may be checked to determine whether it is of a single-peak form or a double-hump form. The dispersion of the histogram may also be determined.
Inventors
- 👤 Hideya Takeo
- 👤 Nobuyuki Tanaka
- 👤 Nobuyoshi Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/10; Y; Y10; Y10S; Y10S250/00; Y10S250/909
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
64 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating an accumulative histogram defining cumulative distributions of image signals bearing a transmitted image of a human body; (ii) determining a rate of change of said accumulative histogram in a predetermined region thereof; and (iii) determining the imaged posture of said image based on said rate of change.
Claim 2
Independent Claim
64 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating an accumulative histogram defining cumulative distributions of image signals bearing a transmitted image of a human body; (ii) determining a rate of change of said accumulative histogram in a predetermined region thereof; and (iii) determining the imaged posture of said image based on said rate of change.
Claim 3
Independent Claim
51 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) determining the separation of said histogram; and (iii) determining the imaged posture of said image based on said separation.
Claim 4
Independent Claim
51 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) determining the separation of said histogram; and (iii) determining the imaged posture of said image based on said separation.
Claim 5
Independent Claim
74 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) determining the degree of matching between a pattern of said histogram and a plurality of reference image signal histogram patterns predefined of imaged postures of the image; and (iii) determining the imaged posture of said image based on said degree of matching.
Claim 6
Independent Claim
74 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) determining the degree of matching between a pattern of said histogram and a plurality of reference image signal histogram patterns predefined of imaged postures of the image; and (iii) determining the imaged posture of said image based on said degree of matching.
Claim 7
Independent Claim
107 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) determining a function approximating a pattern of said histogram; (iii) thereafter, determining a derivative of second order of said function; (iv) checking whether said derivative of second order is of a positive or negative value in a predetermined section of the histogram, the section corresponding to a region in the image; and (v) determining the imaged posture of said image based on whether said derivative of second order is of a positive or negative value.
Claim 8
Independent Claim
107 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) determining a function approximating a pattern of said histogram; (iii) thereafter, determining a derivative of second order of said function; (iv) checking whether said derivative of second order is of a positive or negative value in a predetermined section of the histogram, the section corresponding to a region in the image; and (v) determining the imaged posture of said image based on whether said derivative of second order is of a positive or negative value.
Claim 9
Independent Claim
70 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) detecting whether said histogram is basically of a single-peak form or a double-hump form; and (iii) determining the imaged posture of said image based on whether said histogram is basically of a single-peak form of a double-hump form.
Claim 10
Independent Claim
70 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) detecting whether said histogram is basically of a single-peak form or a double-hump form; and (iii) determining the imaged posture of said image based on whether said histogram is basically of a single-peak form of a double-hump form.
Claim 11
Independent Claim
51 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) determining the dispersion of said histogram; and (iii) determining the imaged posture of said image based on said dispersion.
Claim 12
Independent Claim
51 words
A method of determining the imaged posture of a medical image, comprising the steps of: (i) generating a histogram of an image signal bearing a transmitted image of a human body; (ii) determining the dispersion of said histogram; and (iii) determining the imaged posture of said image based on said dispersion.
References Cited (Backward Citations)
US4466122A
Cited
US4504972A
Cited
JPS59200379A
Cited
US4688088A
Cited
JPS61134886A
Cited
JPS61193004A
Cited
JPS61239376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-19 | 1993-08-21 | 1994-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-19 | 1997-08-21 | 1998-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-19 | 2001-08-21 | 2002-02-20 | $7700.00 | Window Closed / Lapsed |