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US 4,904,867 AGranted
Radiation image read-out method and apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorYuuma Adachi
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AssigneeFuji Photo Film Co., Ltd.
InventorYuuma Adachi
Estimating the term…
In a radiation image read-out method and apparatus, final read-out is carried out for detecting image signals for use in reproduction of a visible image from a recording medium carrying a radiation image recorded thereon, and read-out conditions for the final read-out and/or image processing conditions are adjusted based on image signals for condition adjustment detected by reading out the image information recorded on the recording medium. Image signals in a partial region at a predetermined position on the recording medium are extracted from the image signals for condition adjustment, and a representative value of the image signal for the partial region is calculated. A predetermined discrimination value representing a relationship between a characteristic value of the image signals for condition adjustment and the representative value is calculated, and the read-out conditions for the final read-out and/or the image processing conditions are adjusted based on the discrimination value.
A method of reading out a radiation image in which final read-out is carried out for detecting image signals for use in reproduction of a visible image for a recording medium carrying a radiation image of an object recorded thereon, and read-out conditions for the final read-out and/or image processing conditions for an image processing of final read-out image signals detected by the final read-out are adjusted based on image signals for condition adjustment detected by reading out the image information recorded on the recording medium,
A radiation image read-out apparatus comprising a final read-out system provided with a means for emitting light to a recording medium carrying a radiation image of an object recorded thereon, a means for moving said recording medium, and a light detection means for photoelectrically detecting an amount of light emission by said recording medium upon exposure to said light and obtaining image signals for use in reproduction of a visible image, and a system for adjusting read-out conditions for the final read-out and/or image processing conditions for an image processing of final read-out image signals, which are detected by the final read-out, based on image signals for conditions adjustment detected by reading out the image information recorded on the recording medium,
A method of discriminating the image recording direction of an object in a radiation image read-out method wherein read-out is carried out for detecting image signals for use in reproduction of a visible image from a recording medium carrying a radiation image of the object recorded thereon comprising the steps of extracting image signals in a partial region at a predetermined position on a recording medium from said image signals, and calculating a representative value of the image signal for said partial region, and calculating a predetermined discrimination value representing a relationship between a characteristic value of said image signals and said representative value.
Dependencies are inferred from the claim text.