Patent US6633657B1 successfully refreshed from Google Patents.
US6633657B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling a dynamic range of a digital diagnostic image
Assignee: General Electric Co
•
Filing: 1999-07-15
•
Granted: 2003-10-14
•
Expires: 2019-07-15
Abstract
Abstract A method and system for controlling a dynamic range of a medical diagnostic image provided by a medical diagnostic system. A target dynamic range is identified independent of a dynamic range of an original medical image. A presentation map is generated defining a relation between the dynamic range of the original medical image representative of a patient and the target dynamic range. A gray level-optical density model may define the relation between gray levels of the original medical image and target optical densities of the presentation map, the gray level-optical density model being calculated based on film characteristics, selected optical densities for anatomical structure or on a measured dynamic range. A presentation image is created having the target dynamic range based on a the presentation map and original medical image.
Inventors
- 👤 Kenneth Scott Kump
- 👤 Ping Xue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:50
CPC Classifications
G; G06; G06T; G06T5/00; G06T5/90; G06T5/92
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
78 words
A method for controlling a dynamic range of a medical diagnostic image provided by a medical diagnostic system comprising: identifying a target dynamic range independent of a dynamic range of an original medical image; generating a presentation map defining a relation between said dynamic range of said original medical image representative of a patient and said target dynamic range; and creating a presentation image having said target dynamic range based on said presentation map and original medical image.
Claim 2
Independent Claim
78 words
A method for controlling a dynamic range of a medical diagnostic image provided by a medical diagnostic system comprising: identifying a target dynamic range independent of a dynamic range of an original medical image; generating a presentation map defining a relation between said dynamic range of said original medical image representative of a patient and said target dynamic range; and creating a presentation image having said target dynamic range based on said presentation map and original medical image.
Claim 3
Dependent Claim
17 words
The method of claim 1 , further comprising: obtaining a digital image as the original medical image.
Claim 4
Dependent Claim
63 words
The method of claim 1 , further comprising: calculating a gray level-optical density model defining a relation between gray levels of the original medical image and target optical densities of said target dynamic range for a desired output medical image associated with the original medical image, said generating step defining said relation of said presentation map based on said gray level-optical density model.
Claim 5
Dependent Claim
22 words
The method of claim 3 , further comprising basing said gray level-optical density model on film characteristics for a desired film type.
Claim 6
Dependent Claim
24 words
The method of claim 3 , further comprising basing said gray level-optical density model on N selected optical densities for a selected anatomical structure.
Claim 7
Dependent Claim
24 words
The method of claim 3 , further comprising basing said gray level-optical density model on a measured dynamic range for the original medical image.
Claim 8
Dependent Claim
38 words
The method of claim 1 , further comprising: calculating a model correlating said dynamic range of said original medical image to said target dynamic range based on user-selected optical densities and measured optical densities for an anatomic structure.
Claim 9
Dependent Claim
40 words
The method of claim 1 , further comprising: defining a look-up table storing a sensitometry curve characterizing a relation between gray level and optical density, said generating step defining said relation of said presentation map based on said look-up table.
Claim 10
Dependent Claim
37 words
The method of claim 1 , further comprising: storing film characteristics for multiple film types, said generating step defining said relation of said presentation map based on stored film characteristics for one of said multiple film types.
Claim 11
Dependent Claim
38 words
The method of claim 1 , further comprising: obtaining maximum and minimum optical density characteristics for one film type, said generating step defining said relation of said presentation map based on said maximum and minimum optical density characteristics.
Claim 12
Dependent Claim
42 words
The method of claim 1 , further comprising: obtaining an output device calibration function calibrating gray levels of said presentation image for an output device, said generating step defining said relation of said presentation map based on said output device calibration function.
Claim 13
Dependent Claim
66 words
The method of claim 1 , further comprising: defining a gray level standard display function based on levels of luminance produced by an output device, said levels of luminance corresponding to gray level digital values; and calculating an inverse of said gray level standard display function, said generating step defining said relation of said presentation map based on said inverse of said gray level display function.
Claim 14
Dependent Claim
16 words
The method of claim 1 , wherein said presentation map is stored as a look-up table.
Claim 15
Dependent Claim
80 words
A medical diagnostic system for controlling a dynamic range of a medical diagnostic image, comprising: a first input for receiving an original medical image; a second input for receiving a target dynamic range independent of a dynamic range of said original medical image; a presentation map defining a relation between a dynamic range of said original medical image and said target dynamic range; and a CPU forming a presentation image from the original medical image based on said presentation map.
Claim 16
Dependent Claim
80 words
A medical diagnostic system for controlling a dynamic range of a medical diagnostic image, comprising: a first input for receiving an original medical image; a second input for receiving a target dynamic range independent of a dynamic range of said original medical image; a presentation map defining a relation between a dynamic range of said original medical image and said target dynamic range; and a CPU forming a presentation image from the original medical image based on said presentation map.
Claim 17
Dependent Claim
13 words
The system of claim 14 , wherein said input is a digital detector.
Claim 18
Dependent Claim
49 words
The system of claim 14 , further comprising: a module for calculating an gray level-optical density model defining a relation between gray levels of the original medical image and target optical densities of said target dynamic range for a desired output medical image associated with the original medical image.
Claim 19
Dependent Claim
22 words
The system of claim 16 , wherein said gray level-optical density model is based on film characteristics of a desired film type.
Claim 20
Dependent Claim
24 words
The system of claim 16 , wherein said gray level-optical density model is based on N selected optical densities for a selected anatomical structure.
Claim 21
Dependent Claim
24 words
The system of claim 16 , wherein said gray level-optical density model is based on a measured dynamic range for the original medical image.
Claim 22
Dependent Claim
40 words
The system of claim 14 , further comprising: a module calculating a model correlating said dynamic range of said original medical image to said target dynamic range based on user-selected optical densities and measured optical densities for an anatomic structure.
Claim 23
Dependent Claim
36 words
The system of claim 14 , further comprising: a look-up table storing a sensitometry curve characterizing a relation between gray level and optical density, said relation of said presentation map being based on said look-up table.
Claim 24
Dependent Claim
35 words
The system of claim 14 , further comprising: memory storing film characteristics for multiple film types, said relation of said presentation map being based on stored film characteristics for one of said multiple film types.
Claim 25
Dependent Claim
38 words
The system of claim 14 , further comprising: an input for obtaining maximum and minimum optical density characteristics for one film type, said relation of said presentation map being based on said maximum and minimum optical density characteristics.
Claim 26
Dependent Claim
42 words
The system of claim 14 , wherein said CPU obtains a gray level standard display function calibrating gray levels of said presentation image for an output device, said relation of said presentation map being based on said gray level standard display function.
Claim 27
Dependent Claim
37 words
The system of claim 24 , wherein said CPU calculates an inverse of said gray level standard display function, said relation of said presentation map being based on said inverse of said gray level standard display function.
Claim 28
Dependent Claim
16 words
The system of claim 24 , wherein said presentation map is stored in a look-up table.
References Cited (Backward Citations)
US4315318A
Cited
US4674125A
Cited
US4716414A
Cited
US4718104A
Cited
US4943707A
Cited
US5012333A
Cited
US5151947A
Cited
US4969204A
Cited
US5467404A
Cited
US5616930A
Cited
US5488674A
Cited
US5461655A
Cited
US5644662A
Cited
US5546473A
Cited
US5493622A
Cited
US6434262B2
Cited
US5848198A
Cited
US6204881B1
Cited
US5450216A
Cited
US5717791A
Cited
US5652776A
Cited
US5923775A
Cited
US5828793A
Cited
US6058217A
Cited
US5832055A
Cited
US6314198B1
Cited
US5835618A
Cited
US5818975A
Cited
US5883985A
Cited
US5978518A
Cited
US6163621A
Cited
US6233069B1
Cited
US6285798B1
Cited
US6282312B1
Cited
US6282313B1
Cited
US6285784B1
Cited
US6335983B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-10-13 | 2007-04-14 | 2007-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-10-13 | 2011-04-14 | 2011-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-10-13 | 2015-04-14 | 2015-10-14 | $7700.00 | Window Closed / Lapsed |