Hitachi, Ltd.

Rigaku Corporation

Hitachi Displays, Ltd.

Tohoku University

Panasonic Liquid Crystal Display Co., Ltd.

Takafumi Koike

Yukihiro Hara

Michio Oikawa

Masafumi Kinoshita

Takuma Shibahara

Masami Yamasaki

Kei Utsugi

Minoru Maesawa

Atsushi Momose

Toshiyuki Kamiya

Hideyuki Sakai

Tsuyoshi Minakawa

Masashi Kageyama

Masahiro Nonoguchi

Naoki Haraguchi

Izumi Mizutani

First ROI pixel values of a first region of interestof a radiographic intensity distribution image, and second ROI pixel values of a second region of interestof the radiographic intensity distribution image, are acquired. One of the first and second regions of interest is set to be at a position, or vicinity thereof, where a phase difference in the intensity modulation period within the radiographic intensity distribution image, with respect to the other region of interest, becomes &#x3c0;/2. Next, an elliptical locus obtained by plotting the first and second ROI pixel values for each radiographic intensity distribution image is determined. k angle region images are then acquired using the radiographic intensity distribution images corresponding to at least k angle regions that have been obtained by dividing the elliptical locus for each given angle. A radiographic image is then generated using the k angle region images. k is an integer of three or more.

Radiographic image generating device

A device that uses a grating to carry out high sensitivity radiographic image shooting using the wave nature of x-rays or the like can shoot a sample that moves relative to a device. A pixel value computation section determines, using a plurality of intensity distribution images of a sample that moves in a direction that traverses the path of radiation, whether or not a point (p, q) on the sample belongs in a region (Ak) on each intensity distribution image. Further, the pixel value computation section obtains a sum pixel value (Jk) for each region (Ak) by summing pixel values on the each intensity distribution image for point (p, q) that belongs to each region (Ak). An image computation section creates a required radiographic image using the sum pixel values (Jk) of the region (Ak).

Provided are a three-dimensional X-ray CT apparatus, a three-dimensional CT image reconstruction method, and a program, which are capable of reducing an operating time. A three-dimensional X-ray CT apparatus includes: a CT imaging portion for continuously and relatively rotating a measurement system with respect to a subject to perform a CT imaging measurement for taking data on a plurality of transmission images for reconstructing a three-dimensional CT image of the subject; and an image reconstruction portion for reconstructing the three-dimensional CT image based on the data on the plurality of transmission images taken by the CT imaging portion and displaying the three-dimensional CT image. During a period in which the CT imaging measurement is being performed, the image reconstruction portion reconstructs the three-dimensional CT image based on already-taken data on transmission images and displays the three-dimensional CT image before the CT imaging measurement is completed.

3 Dimensional X-ray CT apparatus, 3 dimensional CT image reconstruction method, and program

This server for distributing messages quickly detects a performance decline in a downstream server by using a method for keeping, for each distribution-destination server, a threshold such as a connection number and a time interval separate from a response timeout, and determining that performance has declined when the threshold is exceeded. In addition, the present invention improves system availability by identifying a server group in which performance has declined on the basis of a correlation pertaining to inter-server cooperative processing, when a distribution server exhibits a decline in performance, and by the distribution server distributing a message to a server not exhibiting a decline in performance.

Message system for avoiding processing-performance decline

To make a user easily obtain an objective and stable analysis result of bone mineral density. An analyzerof bone mineral density using CT image data of a phantom having a known bone mineral density includes: a known data storage partthat stores known data of bone mineral density for a phantom; a histogram production partthat produces a histogram of region number relative to a CT value for three-dimensional CT image data of the phantom; a correspondence determination partthat determines correspondence between a CT value and a bone mineral density by correlating CT values showing respective peaks of the produced histogram with the known data of the phantom; and an analysis partthat decides a bone mineral density for three-dimensional CT image data of a subject using the determined correspondence.

Analyzer, analysis method and analysis program of bone mineral density

There are provided an image processing apparatus, an image processing method and an image processing program which can easily and accurately specify and analyze an abnormal part of a subject. An image processing apparatusused to specify the abnormal part of the subject includes a calculation unitcalculating position adjustment data between contour data of a specific subject extracted from an X-ray radiographic image and contour data of a photographic image obtained by photographing the specific subject, a sectional image generation unitgenerating a sectional image of a three-dimensional X-ray CT image correlated with the X-ray radiographic image on a plane parallel with a light receiving face of a two-dimensional biolight image correlated with the photographic image, and a display processing unitdisplaying the three-dimensional X-ray CT image and the two-dimensional biolight image in superposition on the sectional image, using the calculated position adjustment data.

Image processing apparatus, image processing method and image processing program

Provided are a CT-image processing apparatus and a method which can remove noise caused by one of a heartbeat and a breathing beat and extract only an accurate periodic motion by the other one. A CT-image processing apparatusthat processes projection data in which an animal is captured as a subject at each time by an X-ray CT apparatus includes a breathing beat threshold specification unitto specify a lower limit of a breathing beat frequency from a feature amount waveform within a ROI for breathing beat synchronization in a series of projection data, a heartbeat threshold specification unitto specify a lower limit of a heartbeat frequency from a feature amount waveform within a ROI for heartbeat synchronization in the series of projection data, a breathing beat extraction unitto extract a breathing beat waveform using a band-pass filter defined by the lower limit of the breathing beat frequency and the lower limit of the heartbeat frequency.

CT-image processing apparatus and method

This is comprising: a volume rendering unit for generating a two-dimensional rendered image by converting three-dimensional volume data into two-dimensional volume data; a depth information generator for generating depth information indicative of the length from a virtual view position in a virtual three-dimensional space to the three-dimensional volume data on the basis of the three-dimensional volume data; an anti-aliasing unit for identifying a target in the rendered image based on the depth information and executing anti-aliasing processing on an edge portion of the identified target; and a display unit for displaying an image including the target, on which the anti-aliasing processing has been executed, as a rendered image.

Medical image processing device and image processing method

A controller has a function that: poygonizes and converts three-dimensional volume data, which is generated by a modality, into polygon data; divides this polygon data into a plurality of clusters; calculates an L2 norm vector of spherical harmonics as a feature vector with respect to each of the clusters based on the polygon data constituting each cluster; identifies whether each cluster is a target or not, based on each calculated feature vector and learning data; and displays an image of a cluster identified as the target at least on a screen.

Volume data analysis system and method therefor

In a mail gateway, a collection part collects, for each specific information contained in a mail entered into a resending queue, statistical information of the specific information. A provisional queue creation part creates a provisional queue based on the collected number of the statistical information. The provisional queue handles a mail which has a possibility of causing congestion. This can prevent a normal queue from entering into a congestion state. Also in the mail gateway, if the congestion state is brought about in the provisional queue which performs a send of a mail containing the specific information, a mail sort part restricts an entry of a mail into the provisional queue. This can limit an influence of the congestion state only to the provisional queue.

Mail gateway, mail delivery method, and program

A CT image processing devicewhich processes projection data in synchronization with a periodic motion of a portion of a subject includes an ROI calculation unitwhich calculates specific information on an ROI for synchronization for each scanning angle so as to track the target portion of the subject. As a result, a strong synchronization signal is obtained, a characteristic amount in which breathing beat and heartbeat sufficiently appear can be measured, and simple synchronization processing is made possible by using the projection data. A dedicated device for obtaining the heartbeat or breathing beat such as ECG and a respiratory measuring device is not required, and a heartbeat signal and a breathing beat signal can be obtained from an ROI signal of the projection data. As a result, blurring on an image caused by the heartbeat can be eliminated, and an image quality is extremely improved.

CT image processing device and CT image processing method

To solve the problem with mobile phone carriers that increasing mail traffic increases storage capacity of a mail server and network load, a relay server which relays a mail transfer (SMTP communication) and a mail fetch (IMAP communication) is installed in a carrier facility network. The relay server compresses a mail including a header transferred from a mail transfer server, adds a new header to encapsulate the mail, and transmits the encapsulated mail to an IMAP server as a compressed mail. In response to a mail fetch request from a communication terminal, the relay server decapsulates and restores the compressed mail fetched from the IMAP server, and transmits the restored mail to the communication terminal. The relay server changes parameters such as the mail size, so that no inconsistency of IMAP commands occurs in compressing/restoring the mail.

Mail relay server

Image retargeting is appropriately performed on stereo pair images composed of at least two images such as in three-dimensional displays. A path of connected pixels in first image data is calculated based on pixel gradient energy. Each pixel in second image data corresponding to each pixel in connected pixels in the first image data is calculated as an initial search point, based on the stereo correspondence relationship between the first image data and the second image data. Pixels that minimize energy between pixels of the first image data and pixels of the second image data in the proximity of the initial search point is calculated as a path of connected pixels in the second image data. A path of optimal connected pixels in the first image data is calculated using the energy.

Image processing apparatus and image processing method

An apparatus for rendering a three-dimensional model from a plurality of eye points to present a three-dimensional picture, wherein the position of a virtual camera for rendering apexes of the three-dimensional model is controlled in accordance with the amount of protrusion of an object under rendering from a display plane to create and present a non-perspective projection picture as a picture at each eye point position. Also, for this control, a weighting parameter is incorporated in each part of the three dimensional model, such that the presentation of stereoscopic sense can be finely controlled.

Stereoscopic picture generating apparatus

The present invention represents an object with high-quality texture. A texture image display apparatus includes: a panel display device () having a plurality of pixels (); a lens array () having a plurality of lenses for controlling outgoing directions of light outputted from the pixels (); a pixel data generation part () for generating pixel data for each pixel; and a panel driving circuitfor driving the panel display device () on the basis of the pixel data. One lens () is provided for a plurality of adjacent pixels (), and directs light outputted from these adjacent pixels () in directions different from one another. For each pixel (), the pixel data generation part () generates pixel data of different image brightness levels depending on outgoing direction of light, for the same image point in displayed content.

Growing community of inventors

Tokyo, Japan

Takafumi Koike