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US 9,959,614 B2Granted
Image processing device and method
AssigneeFUJIFILM Corporation
InventorsKeigo Nakamura, Tomoyuki Takahashi
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AssigneeFUJIFILM Corporation
InventorsKeigo Nakamura, Tomoyuki Takahashi
Estimating the term…
A first concentration range, which is a concentration range of a region of interest, and an output concentration range are determined in an input image. A compression table for compressing a dynamic range of the input image is generated on the basis of the first concentration range and the output concentration range. The first concentration range is changed at a predetermined ratio with respect to the changed output concentration range to determine a second concentration range. A new compression table is generated on the basis of the changed output concentration range and the second concentration range. The dynamic range of the input image is compressed using the new compression table.
An image processing device that performs a dynamic range compression process for an input image, comprising:
An image processing device that performs a dynamic range compression process for an input image, comprising:
An image processing method that performs a dynamic range compression process for an input image, comprising:
A non-transitory recording medium having stored therein a program for causing a computer to execute an image processing method that performs a dynamic range compression process for an input image, the program causing the computer to execute the procedures of:
An image processing method that performs a dynamic range compression process for an input image, comprising:
A non-transitory recording medium having stored therein a program for causing a computer to execute an image processing method that performs a dynamic range compression process for an input image, the program causing the computer to execute the procedures of:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Inspection of images, e.g. flaw detection: biomedical image inspection
Devices using data or image processing specially adapted for radiation diagnosis: involving processing of medical diagnostic data
Image enhancement or restoration: using histogram techniques
Dynamic range modification of images or parts thereof: based on global image properties
About 8 years of term left · ends 12 Oct 2034 (estimated)
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1. Field of the Invention
The present invention relates to an image processing device and an image processing method which perform a dynamic range compression process for an image such as a radiological image.
2. Description of the Related Art
FIG. 1 is a block diagram schematically illustrating the structure of a radiological image diagnosis system to which an image processing device according to an embodiment of the invention is applied.
FIG. 2 is a block diagram schematically illustrating the structure of the image processing device.
FIG. 3 is a diagram illustrating the determination of a first concentration range and an output concentration range.
Hereinafter, an embodiment of the invention will be described with reference to the drawings. FIG. 1 is a block diagram schematically illustrating the structure of a radiological image diagnosis system to which an image processing device according to the embodiment of the invention is applied. As illustrated in FIG. 1, the radiological image diagnosis system includes a radiation generation device 1, a radiation detector 2, an image processing device 3, an imaging control device 4 and an input unit 5. The radiation generation device 1 and the radiation detector 2 are provided so as to be opposite to each other with a subject S interposed therebetween. The imaging control device 4 is connected to the radiation generation device the radiation detector 2, the image processing device 3, and the input unit 5. The radiation detector 2 is connected to the image processing device 3.
The radiation generation device 1 includes a radiation tube 11 that emits radiation and a high voltage generator 12 that applies a tube voltage to the radiation tube 11, and can irradiate the subject S with radiation under the control of the imaging control device 4. The imaging control device 4 controls the setting of imaging conditions, such as the tube voltage, a tube current, and an irradiation time, or operations based on the imaging conditions, on the basis of an input from the input unit 5.
The radiation detector 2 stores radiological image information including radiation which passes through the subject S as an electrostatic latent image, reads the stored electrostatic latent image, and detects a radiation transmissivity distribution as a radiological image. The radiation detector 2 may have any structure as long as it detects radiation and outputs the detected radiation as image information. For example, the radiation detector 2 may be a TFT-type solid-state detector or an optical-reading-type solid-state detector.