Riken Corporation

Other

Amada Company, Limited

Akitake Makinouchi

Kiwamu Kase

Hideo Tashiro

Hideo Yokota

Hitoshi Ohmori

Masahiro Anzai

Ryutaro Himeno

Toshiro Higuchi

Shugo Usami

Yoshinori Teshima

Shuntaro Yamazaki

Yutaka Yamagata

Naomichi Mori

Sakiko Nakamura

Atsushi Yoshiki

Hiroo Yabe

Tetsuya Kondo

Satoko Takemoto

Taketoshi Mishima

V-CAD data is prepared by dividing external dataconsisting of boundary data of an object into rectangular parallelepiped cellshaving boundary planes orthogonal to each other in accordance with octree division and separating the respective divided cells into internal cellspositioned on the inner side of the object and boundary cellsincluding a boundary face, and a modeling unit quantity of a prototyping materialis changed in accordance with sizes of the internal celland the boundary cellof a modeling portion. The prototyping materialis a resin, lumber powder, a low-fusing-point metal, metal powder, ceramics powder or a mixture of a binder and one of these materials, and its modeling unit quantity is set in such a manner that the modeling unit quantity is smaller than a capacity of a corresponding cell and does not protrude from the boundary plane of the cell. As a result, by using the V-CAD data, a program for rapid prototyping can be simplified, and a model production time can be greatly reduced.

Rapid prototyping method and apparatus using V-CAD data

Assuming that there are three continuous frames, i.e, cross sectional images of an organism, a dummy region of interest (ROI) is specified manually in the first frame, a temporary ROI is set in the second frame at the same position as that of the dummy ROI in the first frame. Whether a specific region in the second frame is inside or outside of a true ROI is judged based on the initial judgment criterion and values of pixels in the specific region. Whether a specific region in the third frame is inside or outside of the true ROI is judged based on values of pixels of regions that have been judged to be inside the region of interest in the second frame.

Method of extraction of region of interest, image processing apparatus, and computer product

A method of converting three-dimensional shape data into cell internal data. The method includes an oct-tree division step of dividing external data including boundary data of a target object into rectangular parallelepiped cells having boundary planes orthogonal to each other by oct-tree division. The method further includes a cell classification step of classifying each of the cells into an internal cell positioned inside or outside the target object or a boundary cell including the boundary data, and a cut point determination step of determining cut points of edges of the boundary cell based on the boundary data. The method further includes a boundary surface determination step of connecting cut points to form a polygon, and determining the polygon as the cell internal data when the number of the determined cut points is no fewer than 3 and no more than 12.

Method and program of converting three-dimensional shape data into cell internal data

A method and a program for converting boundary data into cell inner shape data, includes a division step (A) of dividing external data () constituted of the boundary data of an object into cells () in an orthogonal grid, a cutting point deciding step (B) of deciding an intersection point of the boundary data and a cell edge as a cell edge cutting point, a boundary deciding step (C) of deciding a boundary formed by connecting the cell edge cutting points as the cell inner shape data, a cell classification step (D) of classifying the divided cells into a nonboundary cell () including no boundary surface and a boundary cell () including a boundary surface, and a boundary cell data classification step (E) of classifying cell data constituting the boundary cell into internal cell data inside the cell inner shape data and external cell data outside the cell inner shape data.

Method and program for converting boundary data into cell inner shape data

In order to make observation of localizations of in vivo expressed genes possible in an entire individual living organism such as animals, and plants, a living genetic recombinant specimen containing a marker that can be detected at the time when specific genes are expressed is sequentially severed, sectional images each of which corresponds to an image of sections severed are photographed in every scissions of the living specimen, and three-dimensional observation of the living specimen is implemented on the basis of the images photographed in every scissions described above, whereby three-dimensional localizations of expressed genes are observed in the living specimen.

Method and apparatus for observing three-dimensional localizations of in vivo expressed genes as well as method and apparatus for observing minute three-dimensional localizations of in vivo expressed genes

Presented are a shape measuring step (A) in which the size L of an eyeballand the shape R of the eyegroundare measured, an eyeball setting step (B) for setting an eyeball template, an eyeground image taking step (C) for taking images of the eyeground including superimposed portions d by shifting the imaging positions, a parameter setting step (D) for obtaining an eyeball parameter g that represents the positional relationship between the eyeground and images, an image pasting step (F) for pasting a number of images on the eyeball template, and a three dimensional image displaying step (H) for displaying three dimensional eyeground imageson the eyeball template on a display device

Method and apparatus for three dimensionally displaying eyeground and measuring coordinates thereof

(A) V-CAD data of an object () is prepared. (B) A processed surface shape after NC processing is predicted by simulation using the V-CAD data. (C) The object is subjected to NC processing by a predetermined NC program, and a processed surface shape after NC processing is measured, and (D) processing correction data is obtained from a difference between the processed surface shapes acquired by simulation and measurement, and the NC program is corrected based on the processing correction data. As a result, the ultra-precise processing is enabled even if a workpiece or a tool has low rigidity and an inconstant quantity of deformation.

Ultra-precise processing method and apparatus for inhomogeneous material

There is prepared V-CAD data obtained by dividing external dataconsisting of boundary data of an object into rectangular parallelepiped cellshaving boundary planes orthogonal to each other in accordance with octree division and separating the respective divided cells into internal cellspositioned on the inner side of the object and boundary cellsincluding a boundary face, and mold data and mold processing data used to manufacture the object are generated from data of a reference plane which at least partially comes into contact with the objectand the V-CAD data. Further, in the mold processing data, a plurality of the processing toolsare selected in descending order of a size in accordance with sizes of the internal cellsof a processing portion, and the processing toolis moved in a plane of the mold and in the thickness direction, thereby processing the mold. As a result, by using the V-CAD data, the NC processing program for mold processing can be simplified, and the mold processing time can be greatly reduced.

Die machining method and device by V-CAD data

A method of storing substantial data integrating shape and physical properties comprising (A) inputting external dataconsisting of boundary data of an object, (B) dividing, by modified Octree division, the external data into cubical cellswhich boundary surfaces are orthogonal to each other, and (C) storing the values of various physical properties for each of the cells. Furthermore, in step (B), each of the divided cellsis classified to non-boundary cellslocated in the interior of the object or in a region outside of the object, and boundary cellsincluding boundary surfaces. Thereby, substantial data integrating shape and physical properties can be stored in small storage capacity, thus enabling the integration of CAD and simulation.

Storage method of substantial data integrating shape and physical properties

A principle curvature of a target curved surface S&prime; and a principle curvature of a corresponding position of a reference surface S are obtained and each part is displayed by being classified into (a) a case where two principle curvatures increase, (b) a case where two principle curvatures decrease, and (c) a case where one of the principle curvatures increases and the other decreases from the difference between the principle curvatures. (a), (b), and (c) are determined as mountain, valley, and twist, respectively, and are displayed in different symbols or colors on an image. Consequently, a different part between two three-dimensional shapes can be accurately grasped, the cause of the occurrence of the error such as a partial curve or the like can be easily found, how much the shapes coincide with each other as a whole can be indicated by an objective numerical value, and the error can be easily determined even if the reference shape is complicated.

Method of discriminating shape of free-form curved surface

A sample extrusion device for sequentially extruding a sample in a predetermined direction, a sample cutting device for sequentially cutting the extruded sample, and a con-focal image pickup device for focusing an illuminating light at a section portion that was cut to pick up two-dimensional images of the cut section from a reflected light thereof are provided to reconstruct an internal structure of the sample from many two-dimensional images (continuous section images) that differ in the cutting positions. The sample can be continuously cut to continuously observe the sectional images thereof under no influence of the sample being seen transparently, the entirety of the sample can be observed in almost the same condition even though the sample is colored with a fluorescent dye, and thereby, the internal structure of the sample can be reconstructed with a high precision.

Growing community of inventors

Wako, Japan

Akitake Makinouchi