Konica Corporation

Akiko Yanagita

Hisashi Yonekawa

Hitoshi Yoshimura

Atsushi Kido

Masayuki Nakazawa

Sumiya Nagatsuka

Hisanori Tsuchino

Tsutomu Kawano

Fumio Shimada

Motoharu Tsuchiya

In an apparatus for processing a radiation image provided with a detector having a plurality of detecting elements which are arranged in two dimensional arrangement, for acquiring the radiation image, for converting the acquired radiation image into electric signals as image signals, and for outputting the image signals; and an image processor for applying an image processing to the image signals, the image processor includes a normalization processor for converting the image signals into normalized image signals which are proportional to an amount of radiation irradiated to the detector or to a logarithm of the amount of the radiation and includes a predetermined signal value.

Apparatus for detecting and processing a radiation image

An image displaying apparatus includes a memory, an image reader, an image processor, an image adder and a display. The memory stores a plurality of medical images including temporally sequential images of a common portion of a same patient taken at different points of time. The image reader reads out the plurality of medical images from the memory. The image processor processes at least two of the plurality of medical images read out from the memory according to registration information of the at least two of the plurality of medical images so as to obtain a processed image. The image adder adds one of the plurality of medical images read out from the memory to the processed image so as to obtain an addition image. And the display displays the addition image.

Image displaying apparatus of a processed image from temporally

An irradiation field region extracting apparatus for extracting an irradiation field region from a given radiation image. According to a first embodiment, image data corresponding to the radiation image is rotationally moved around a predetermined rotational center of the image data, with the image data having rectangular coordinates set thereon. A boundary line is extracted between the irradiation field region, where the radiation image is exposed, and an irradiation field stop region, where no radiation image is exposed, according to the image data rotationally moved by the rotational movement means. A parallel condition of the boundary line is detected wherein the boundary line is parallel to an axis of the image data, and rotation information data is generated which indicate an angle of a rotational movement of the boundary line from an original location to a location of the parallel condition and a distance between the predetermined rotational center and a given point on the boundary line. A linear equation of the boundary line, originally located before the rotational movement, is calculated in accordance with the rotation information data, and a region, which is surrounded by a plurality of boundary lines calculated in accordance with the linear equation, is extracted as the irradiation field region.

Apparatus for extracting an irradiation field region from a radiation

An image recording apparatus is provided for receiving an image signal indicating a density level of a pixel, and for converting the image signal into a modulating signal to modulate a beam light so as to reproduce a corresponding density level on a recording medium. The apparatus includes a conversion table for converting between possible image signals and a plurality of modulating signals, a correction circuit for obtaining a plurality of correction values each representing a deviation between a current recording characteristic and a desired recording recording characteristic on the basis of the plurality of actual density levels; and a table correction circuit for correcting the conversion table on the basis of the correction value for each of the possible image signals.

Gray level compensator for picture recorder

A radiographical image reader for photoelectrically reading a radiographical image of an object. The image reader comprises a radioactive ray irradiator; a radiographical image converting panel which is a radioactive ray absorbent for absorbing the radioactive ray transmitted through through the object so that a radiographical image information is obtained; a scanner to scan the converting panel with exciting light so that the converting panel is subjected to stimulated emission; a reader to read the stimulated emission of the converting panel so that the radiographical image is obtained; a first memory to store at least one of a radioactive ray irradiating condition, object information, and image identification code; a second memory to store a radiographical image information; and a circuit to control the functions of the reader, the first memory, and the second memory in accordance with said irradiation of the radioactive ray by the irradiator.

Growing community of inventors

Hino, Japan

Akiko Yanagita