摘要:
A radiation image read-out apparatus includes a plurality of radiation image convertor panels superposed one on another in a direction in which radiation passing through an object propagates. A separator separates the superposed radiation image convertor panels exposed to the radiation passing through the object from one another by moving in a parallel displacement and/or rotating about an axis on a plane parallel to the surfaces of the radiation image convertor panels one or more of the superposed radiation image convertor panels relatively to the others. A single detecting head detects stimulated emission emitted from each of the radiation image convertor panels separated by the separator.
摘要:
An image signal representing radiation image information on an object stored on a stimulable phosphor sheet is read out by scanning the stimulable phosphor sheet with a stimulating light beam and photoelectrically detecting light emitted from the stimulable phosphor sheet upon stimulation thereof by a photodetector having a photoelectric surface. A variable transmittance medium whose transmittance to the light emitted from the stimulable phosphor sheet upon stimulation thereof is variable continuously or stepwise is inserted into the optical path of the light between the stimulable phosphor sheet and the photoelectric surface of the photodetector The transmittance of the variable transmittance medium is changed according to the amount of light emitted from the stimulable phosphor sheet upon stimulation thereof so that the photoelectric surface is not saturated by an excessive amount of light impinging thereupon.
摘要:
Image processing, which is constituted of a plurality of processes, is carried out on a radiation image signal. An intermediate image signal obtained in at least one process, which is among the processes other than a last process in the plurality of the processes constituting the image processing, is stored on a predetermined storage medium. In cases where an abnormality occurred during the image processing, a process, in which the abnormality occurred, is discriminated quickly, and a cause of the abnormality is specified quickly.
摘要:
In a radiation image read-out apparatus, a stimulable phosphor sheet storing thereon a radiation image is exposed to stimulating light and stimulated emission emitted from the stimulable phosphor sheet upon stimulation by the stimulating light is detected and an image signal representing the radiation image stored on the stimulable phosphor sheet is obtained by photoelectrically converting the stimulated emission. A read-out system includes an array of a plurality of read-out heads, each including a stimulating light source which projects the stimulating light onto the stimulable phosphor sheet and a photodetector which detects the stimulated emission. A conveyor system conveys the stimulable phosphor sheet and the read-out system relative to each other in a direction intersecting the direction of the array of the read-out heads.
摘要:
Disclosed herein is a method of obtaining an image signal, comprising the steps of preparing an image recording sheet having a stimulable phosphor layer which emits photostimulated luminescent light in a quantity corresponding to stored energy when irradiated with stimulating light, scanning the image recording sheet in horizontal and vertical scanning directions with the stimulating light, and obtaining the image signal by detecting the photostimulated luminescent light emitted by the scanning, with a solid-state image detector having a photoconductor. The signal, output from the solid-state image detector when scanning a non-image region other than an image recording region on the image recording sheet with the stimulating light, is detected as a correction signal. A non-image component, contained in a signal output from the solid-state image detector when scanning the image recording region with the stimulating light, is suppressed with the correction signal.
摘要:
A semiconductor laser drive circuit for supplying an electric current to a semiconductor laser includes a laser power supply which supplies an electric current of a positive or negative voltage to the semiconductor laser, an operational amplifier which is driven by a positive amplifier power supply and a negative amplifier power supply, and a current control element which controls the amount of electric current flowing into the semiconductor laser according to the output of the operational amplifier. A sequence circuit causes one of the amplifier power supplies, which one is reverse in polarity as the laser power supply, to start first and then causes the other amplifier power supply to start after the former amplifier power supply achieves a steady voltage.
摘要:
To make it possible to verify the finished state of the entire head in advance to thereby freely select a hair style suitable to the taste of the person 4 receiving the hairdressing service by adjusting the hair style to the face of that person, the hairdo pattern selecting system is realized in a way to: accumulate a multiple number of hairdo patterns in computer 5, in the prescribed angle range .theta. and as continuous hairdo patterns of a prescribed speed, photograph and input in the computer 5 the head of the person 4 receiving the service, the prescribed angle range .theta. agreeing with the hairdo pattern images and as continuous head images of a prescribed speed; synthesize the head image and the hairdo pattern image selected from among a multiple number of hairdo pattern images and output the result as continuous synthesized images of a prescribed speed on display 6.
摘要:
In a radiation image read-out apparatus, a stimulable phosphor sheet, on which a radiation image of an object has been stored, is scanned with a laser beam of a predetermined output power, which causes the stimulable phosphor sheet to emit light in proportion to the amount of energy stored thereon during its exposure to radiation, and the emitted light is photoelectrically detected with a predetermined sampling time. A response speed r �sec! of the stimulable phosphor constituting the stimulable phosphor sheet, the laser beam output power p �W!, a picture element size s �m!, and the sampling time t �sec! are set such that they may satisfy Formulas (1), (2), and (3): r/(s.multidot.t) 1 (3) The radiation image having been stored on the stimulable phosphor sheet is thereby read out quickly and such that a reproduced image having good image quality may be obtained.
摘要:
Corrective image data obtained by reading a stimulable phosphor sheet which is uniformly irradiated with a radiation are masked, and added and averaged into reference data. The ratio between the reference data and the corrective image data is generated as sensitivity correcting data. Desired radiation image information is then read from the stimulable phosphor sheet, corrected by the sensitivity correcting data, and outputted to an external image processing apparatus.
摘要:
A charge read-out method and a solid-state imaging device capable of shortening a read-out time of charges stored in a plurality of light receiving units arranged linearly are provided. The charge read-out method includes the steps of moving the charges, which are generated and stored in the plurality of light receiving units linearly arranged by receiving light, to charge transfer paths disposed along a row of the light receiving units on both sides thereof, transferring the charges along the charge transfer paths to an output unit, and calculating a sum of converted values based on amounts of the charges transferred from the charge transfer paths for outputting.