IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0628173
(2000-07-28)
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발명자
/ 주소 |
- Mo,Larry Y. L.
- Brouwer,Dean W.
- Duesterhoeft,Terry J.
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출원인 / 주소 |
- GE Medical Systems Global Technology Company, LLC
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대리인 / 주소 |
Ostrager Chong Flaherty &
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인용정보 |
피인용 횟수 :
8 인용 특허 :
7 |
초록
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An imaging system has a computer which monitors changes to any given front-panel control setting for a particular image processing parameter (e.g., dynamic range, transmit foci position, Doppler wall filter setting, etc.) as compared to its default or preset value. For each user ID (e.g., based on t
An imaging system has a computer which monitors changes to any given front-panel control setting for a particular image processing parameter (e.g., dynamic range, transmit foci position, Doppler wall filter setting, etc.) as compared to its default or preset value. For each user ID (e.g., based on the system user's name or any user code) and each application type, if, over a number of exam cycles, the user is found to consistently adjust a particular control setting to values that deviate significantly from the preset value, the system computer will automatically adjust the preset value to, e.g., the average setting of that image processing parameter over the past N trials, where N is a predefined integer number.
대표청구항
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The invention claimed is: 1. An imaging system comprising: a display monitor; an operator interface comprising a first control input device for activating adaptive grayscale adjustment, a second control input device for setting gain, a third control input device for setting dynamic range, and a fou
The invention claimed is: 1. An imaging system comprising: a display monitor; an operator interface comprising a first control input device for activating adaptive grayscale adjustment, a second control input device for setting gain, a third control input device for setting dynamic range, and a fourth control input device for activating image capture; a scanning subsystem for acquiring raw data; and an image processing system for processing acquired raw data to display an image frame of imaging data on said display monitor, said image processing system comprising memory for storing displayed image frames, grayscale mappings, upper and lower grayscale levels for use in adaptive grayscale adjustment, gain settings, and dynamic range settings, and a computer programmed to perform the following steps: (a) controlling said display monitor to display an image frame of imaging data derived from acquired raw data processed in accordance with the grayscale mapping, the gain setting and the dynamic range setting currently stored in said memory; (b) monitoring the state of said first control input device to detect a change in the state of said first control input device corresponding to activation of adaptive grayscale adjustment; (c) in response to detection of such a change in the state of said first control input device, adjusting the contrast of said image frame by performing adaptive grayscale adjustment using the upper and lower grayscale levels currently stored in said memory, and controlling said display monitor to display said contrast-adjusted version of said image frame; (d) monitoring the state of said second and third control input devices, during a first predetermined time period subsequent to said change in the state of said first control input device, to detect a change in the state of said second or third control input devices that results in a second gain setting different than said first gain setting or a second dynamic range setting different than said first dynamic range setting; (e) in response to detection of such a change in the state of said second or third control input device, further adjusting the contrast of said image frame in accordance with said changed gain or dynamic range setting, and controlling said display monitor to display said further contrast-adjusted version of said image frame; (f) monitoring the states of said second, third and fourth control input devices to detect whether either of the following conditions is satisfied: (i) the changed state of said second or third control input device is stabilized for a second predetermined time period immediately subsequent to said change in the state of said second or third control input device before any other system control change is made by the operator; or (ii) the state of said fourth control input device is changed to a state corresponding to activation of an image capture operation while the changed state of said second and/or third control input device is still in effect; (g) if either of said conditions is satisfied, analyzing the pixel intensity histogram of said further contrast-adjusted version of said image frame to determine the operator-achieved upper and lower grayscale levels; and (h) storing said operator-achieved upper and lower grayscale levels in said memory in place of the upper and lower grayscale levels used in step (c). 2. The imaging system as recited in claim 1, wherein said computer is further programmed to generate, during a subsequent adaptive grayscale adjustment, a gray map that is a function of said stored operator-achieved upper and lower grayscale levels. 3. The imaging system as recited in claim 1, wherein said computer is further programmed to store said operator-achieved upper and lower grayscale levels in association with a system user ID inputted via said operator interface. 4. The imaging system as recited in claim 3, wherein said computer is further programmed to store an application type or exam type in association with said operator-achieved upper and lower grayscale levels and said system user ID. 5. The imaging system as recited in claim 3, wherein said computer is further programmed to control said display monitor to display a message, prior to said storing step, requesting confirmation from the system user that operator-achieved upper and lower grayscale levels should be stored. 6. An imaging system comprising: a display monitor; an operator interface comprising a first control input device for activating adaptive grayscale adjustment, a second control input device for setting gain, a third control input device for setting dynamic range, and a fourth control input device for activating image capture; a scanning subsystem for acquiring raw data; and an image processing system for processing acquired raw data to display an image frame of imaging data on said display monitor, said image processing system comprising memory for storing displayed image frames, grayscale mappings, upper and lower grayscale levels for use in adaptive grayscale adjustment, gain settings, and dynamic range settings, and a computer programmed to perform the following steps: (a) controlling said display monitor to display an image frame of imaging data derived from acquired raw data processed in accordance with the grayscale mapping, the gain setting and the dynamic range setting currently stored in said memory; (b) monitoring the state of said first control input device to detect a change in the state of said first control input device corresponding to activation of adaptive grayscale adjustment; (c) in response to detection of such a change in the state of said first control input device, adjusting the contrast of said image frame by performing adaptive grayscale adjustment using the upper and lower grayscale levels currently stored in said memory, and controlling said display monitor to display said contrast-adjusted version of said image frame; (d) monitoring the state of said second and third control input devices, during a first predetermined time period subsequent to said change in the state of said first control input device, to detect a change in the state of said second or third control input devices that results in a second gain setting different than said first gain setting or a second dynamic range setting different than said first dynamic range setting; (e) in response to detection of such a change in the state of said second or third control input device, further adjusting the contrast of said image frame in accordance with said changed gain or dynamic range setting, and controlling said display monitor to display said further contrast-adjusted version of said image frame; (f) monitoring the states of said second, third and fourth control input devices to detect whether either of the following conditions is satisfied: (i) the changed state of said second or third control input device is stabilized for a second predetermined time period immediately subsequent to said change in the state of said second or third control input device before any other system control change is made by the operator; or (ii) the state of said fourth control input device is changed to a state corresponding to activation of an image capture operation while the changed state of said second and/or third control input device is still in effect; (g) if either of said conditions is satisfied, analyzing the pixel intensity histogram of said further contrast-adjusted version of said image frame to determine the operator-achieved upper and lower grayscale levels; and (h) storing in said memory new upper and lower grayscale levels in place of the upper and lower grayscale levels used in step (c), said new upper and lower grayscale levels being a function of said operator-achieved upper and lower grayscale levels. 7. The imaging system as recited in claim 6, wherein said new upper grayscale level is an average of a first plurality of values, said first plurality including at least said upper grayscale level used in step (c) and said operator-achieved upper grayscale level, and said new lower grayscale level is an average of a second plurality of values, said second plurality including at least said lower grayscale level used in step (c) and said operator-achieved lower grayscale level. 8. The imaging system as recited in claim 6, wherein said computer is further programmed to store a system user ID in association with said operator-achieved upper and lower grayscale levels.
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