Toudai Tlo, Ltd.

Hitachi, Ltd.

Hitachi-high-technologies Corporation

The University of Tokyo

Center for Advanced Science and Technology Incubation, Ltd.

Norio Baba

Eisaku Katayama

Takashi Kubo

Hiroyuki Kobayashi

Toshie Yaguchi

Takahito Hashimoto

Yoshitaka Kimori

Mitsuo Ogasawara

Koichi Kanaya

Disclosed is image processing: that significantly reduces false images and missing images in reconstructed images, improves reconstruction accuracy; and that can be applied to objects to be observed that are composed of a plurality of components, and to samples having an unknown number of structural compositions. An image processing device is provided with: a means, in an electron microscope having an imaging device and a tilting device that tilts an object to be observed, for tilting said object to be observed in an angle step, and storing the obtained tiled image; a means for aligning the position of said tilted images; a means for generating an initial reconstructed image based on said tilted images; a means for projecting said initial reconstructed image at arbitrarily-defined angles and generating a plurality of projected images; a means for calculating errors in the corresponding pixels between the tilted images and the projection images; a means for determining a processing priority from said errors; a means for calculating the density for each gradation level; a means for determining the processing priority from said densities; and a means for changing the density value of each pixel in the initial reconstructed image in each of the above-mentioned priorities.

Image processing method, image processing system, and X-ray computed tomography system

There is provided a three-dimensional image reconstructing apparatus for reconstructing a three-dimensional image of an object. The three-dimensional image reconstructing apparatus includes an image-capturing section that captures a plurality of transmission-type images each of which is represented by densities of different levels, a characteristic region selecting section that selects a plurality of characteristic regions in each of the transmission-type images, a characteristic region distribution calculating section that calculates a spatial distribution of the characteristic regions based on respective positions of the characteristic regions, in each of the transmission-type images, and a three-dimensional image reconstructing section that, when reconstructing the three-dimensional image which shows the three-dimensional structure of the object and in which the densities of different levels are allocated to the whole object by integrating the transmission-type images, allocates the densities of different levels of the transmission-type images to respective positions, in the three-dimensional image, of the characteristic regions based on the spatial distribution of the characteristic regions, so as to reconstruct the three-dimensional image in which a three-dimensional structure in each of the characteristic regions is shown.

Stereoscopic image regenerating apparatus, stereoscopic image regenerating method, and stereoscopic image regenerating program

It is an object of the present invention to acquire 3-dimensional image data that correctly express a structural configuration of the subject by processing the projected image data obtained by projecting the subject toward the plural angles . A shape computing unitcalculates shape data which represent a outline of the subject, using a plurality of 1st image data of the subject obtained by projecting the subject toward the plural angles. A distributing unitgenerates gray-scale density-distributions by spreading and distributing densities shown in gray-scale image of the subject respectively within angles along which said gray-scale image was captured. A second integrating unitgenerates 3-dimensional gray-scale data, which expresses the subject with the 3-dimensional image data, by integrating a plurality of said gray-scale density-distributions generated from a plurality of gray-scale image captured from a plurality of angles. A first integrating unitintegrates the shape data and 3-dimensional gray-scale image. A data processing unitgenerates 3-dimensional image data by extracting only density that exists in perimeter of a shape that the shape data represent, from the 3-dimensional gray-scale data.

Image processing apparatus, image processing method, computer readable medium, and computer program thereof

A projection image data captured from a plurality of angles is processed, and a three-dimensional image data accurately indicating a three dimensional structure for an object is obtained. A shape computing unitcomputes shape data indicating an outline of a subject using a plurality of first image data of the subject captured from a plurality of angles. A distributing unitgenerates a gray-scale density-distribution by extending and distributing density indicated in a gray-scale image of the subject acquired by a projection image capturing apparatus to an angle at which the gray-scale image is captured. The second integrating unitgenerates a three-dimensional gray-scale data indicating the subject with three-dimensional image data by integrating a plurality of gray-scale images acquired from a plurality of angles and a plurality of gray-scale density-distribution. The first integrating unitintegrates the three-dimensional gray-scale image and shape data. The data processing unitgenerates the three-dimensional image data by extracting only the gray-scale data which exists in the circumference of the shape indicated in the shape data from the three-dimensional gray-scale data.

Three-dimensional structure verification supporting apparatus, three-dimensional structure verification method, recording medium, and program therefor

Verification of properness of a modeling theory of an uncrystallized substance or an image processing method is made easy. There includes: a first displaying unit 120 for rotationally displaying an simulated three-dimensionally shaded model image, which is a shaded image of the three-dimensional reconstruction image; and a second displaying unit 140 for displaying the three-dimensional image of the substance acquired by experimental structural analysis, which synchronously rotates with the simulated three-dimensionally shaded model image.

An electron microscope comprising an electron gun for generating an electron beam, an irradiation lens system for irradiating a specimen with the electron beam, means for obtaining an image signal of the specimen, a frame memory for storing the image signal, means for obtaining a total accumulation function, which indicates the sum total of accumulated values in a plurality of one-dimensional directions, and in which each of the accumulated values in the plurality of one-dimensional directions indicates accumulation with respect to a frequency of a function obtained by applying one-dimensional Fourier transform to a function obtained by projecting two-dimensional intensity distribution of said image signal in corresponding one-dimensional direction thereof, and means for obtaining a substantial extreme point of the total accumulation function.

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Tokyo, Japan

Norio Baba