Hitachi, Ltd.

Other

Hitachi Software Engineering Company, Ltd.

Hitachi Seiko, Ltd.

Hitachi Engineering Services Co., Ltd.

Kazuaki Iwamura

Keiro Muro

Shigeru Kakumoto

Takehiro Fujita

Takashi Hino

Tsuneya Kurihara

Yasuei Nomoto

Kazuo Tsutsui

Nobuhiro Ishimaru

Yasunori Emura

Yoshizo Ito

Haomin Jin

Masakazu Ejiri

Yoriko Kazama

Ryuji Mine

Yukio Funyu

Tsutomu Ikeda

Hidenori Inouchi

Kazuo Watanabe

Masakazu Matsuo

Shu Tezuka

Shintaro Hatsumoto

Yasuyuki Kikuchi

Rita M Harder

Yoshiaki Kagawa

Mitsuru Fujii

Junichi Nakahata

Provided is a geographic information system using map data including configuration data provided with time information and attribute data corresponding to an attribute of an object contained in the map data, including an information import module for receiving an input of a geographic area of an object to be retrieved and a search key; a map retrieval module for extracting configuration data, for which the input geographic area of the object to be retrieved and an area represented by the configuration data at least partially overlap each other, from the map data; a correlation module for correlating the configuration data with the attribute data identical with the input search key, for which the area represented by the extracted configuration data overlaps the positional information, according to each of the time information provided to the configuration data and to the attribute data; and an output module for outputting the correlated data.

Geographic information system

An inundation simulation program and device using the same for displaying a map, receiving input from a user indicating a starting point and an ending point in a bank breakage section on the map, and displaying on the map a line connecting the starting point and the ending point. Further, the computer program and device calculates a direction of a flow quantity in the bank breakage section by calculating a normal line to the side of the inside area of the bank at the input band breakage section and making the bank breakage section discrete in the calculation grids of the inundation simulation.

Inundation simulator and program

A long object management system for managing the history of the attribute data as well as the shape data constituting the temporal information of pipeline facilities, in which the future prediction is conducted by acquiring and managing the temporal information. The system comprises a unit for managing the time change data by the difference management of the pipeline shape and attribute data, and a unit for retrieving the time change data managed by difference, correcting the position using the result of retrieval and setting the correspondence between the time change data by correcting the data position.

Long infrastructure management system and program

The present invention can extract a change not only from an orthorectified image but also from a plurality of images captured at different camera positions, under different lighting conditions, at different angles, and at different scaling factors. Foot-print information is extracted from each of images to be compared, and a change is detected by comparing the foot-print information.

Change detection equipment and method of image recognition

It is possible to easily perform the spatial simulation for a large area. Provided is a computer-readable medium recorded with a spatial simulation program for controlling a computer to execute procedures for calculating a time-based change of a variable in a plurality of numerical grids to reproduce on a computer a time-based change of a phenomenon represented by the variable in a space represented by the plurality of numerical grids, the spatial simulation program including the procedures of: defining a sub domain composed of the plurality of numerical grids (); setting a forcing condition for the sub domain (); detecting the sub domain including the numerical grid in which the variable changes with time; detecting the sub domain including the numerical grid in which the variable referred to for calculating the time-based change is positioned (); and updating variables in the numerical grids constituting the detected sub domain ().

Spatial simulation program and system

To provide a map generation device according to the present invention which extracts a polygon shape of a building having a complex upper portion structure from a wide area image. The map generation device includes an image appointment unit that receives appointment of at least one position in a building existing within an aerial photograph, a polygon extraction unit that extracts a building region based on a result of discriminating a color around the appointed position and extracts a polygon line of the building region, and a vector generation unit that generates a vector of the polygon line of the building region.

Map generation device, map delivery method, and map generation program

There have been problems in the facility information management system arts because when a distance-based facility database is searched for the facility information by specifying the name and distance of a facility, the location and position of a specific facility must be found on a figure such as a map. Such a location is not easily pointed out especially when the facility is damaged. To overcome the above problems, the present invention relates the distance-based facility data with map data and allows a generation of graphical figure data to be overlaid on a map from the numerical data corresponding to the facility parameters stored in the distance-based facility data.

Map generating system and map management system

A figure management system in which plural kinds of figures concerning the same part to be managed are modified. The figure management system includes a figure DB for storing data of figures including topological figures, an attribute DB for storing object attribute data, input and output devices, and a computer for managing figure and object attribute data. An ID code common to features indicating the same object is assigned. On input of a new figure, feature-attribute matching is performed between a feature having no ID code on the new figure and existent object attribute data. If any inconsistency is found the feature is indicated as a discrepant feature or a renewed feature.

Figure management system and figure modifying method by using figure management system

The present invention offers a feature data management method which provides data indicating created time and destroyed time of geographic object for feature data, thereby increasing the speed and facilitating a search in time direction. By this method, for example, if the building C is built at time Ts and destroyed at time Te, created time Ts and destroyed time Te of geographic object C are registered in the feature data, whereby it can be managed by a database that the geographic object C existed only between times Ts and Te.

Method of managing feature data

An image displaying method and apparatus for simultaneously displaying an enlargement target of an entire original image and its enlarged image on a display screen by automatically disposing the enlarged image. The image displaying apparatus includes display for displaying an enlarged image of part of the entire original image including characters, patterns, etc. in a relation superposed on the entire original image, input apparatus for pointing to specify the enlargement target in the entire original image, and automatic disposing apparatus for preferentially specifying and computing the values of the area of the enlargement target region, the area of the enlarged image display region and the enlargement ratio so as to maximize one of these values and disposing the enlarged image on the basis of the result of computation. Further, in order that the enlarged image is easily visible, the enlargement target region and the enlarged image display region are disposed and displayed on the display screen so that a peripheral region adjoining the enlargement target region is displayed between these two regions.

Method and apparatus for displaying a target region and an enlarged image

This invention relates to a graphic data processing system, and is more particularly directed to provide an easy-to-operate system and displaying method thereof, for generating scene data from map data and retrieving and displaying attributes containing guide information of ground objects in a scene. In the first place, when a visual point is directed from above to below, a planar map is displayed, and as the visual point shifts in a horizontal direction, a three-dimensional scene image is generated and displayed from a map. Secondly, a three-dimensional window is displayed in a display, and graphic data is displayed inside the window.

Graphic data processing system

An integrated data structure is provided which can be maintained and managed by selectively using data storage forms for storing graphic data representing three-dimensional figures, such as houses, roads, underground piping and the like, according to the properties of an object figure and mixing the same. Three control flags respectively specifying three kinds of operations for extension to be carried out for extending two-dimensional graphic data comprising two-dimensional coordinates (x, y) can be selectively used. An extension 1 to specify the component points of a figure by coordinates (x, y, z), an extension 2 to specify a z-coordinate indicating the altitude of a figure for the figure, and an extension 2 to specify a value d and information f indicating the construction of a figure having a predetermined shape and a method of display are used individually or in combination to form a three-dimensional figure. A variety of three-dimensional figures can be formed by using a comparatively small amount of graphic data, requiring a storage apparatus having a comparatively small storage capacity.

Shape dependent three-dimensional graphic data managing method

A graphics display image is displayed on a display, the graphics display image being formed by a plurality of graphics display image components, at least some of which have to be edited. The graphics display image components may be generated from data obtained e.g. from optical reading of a hard-copy of a map, circuit diagram, or design drawing by a suitable optical reader. The graphics display image components which are to be edited are displayed with a different visual appearance from any components which do not have to be edited, e.g. by highlighting the components to be edited. As the editing of each components is completed, its visual appearance is changed, e.g. the highlighting cancelled, so the operator has an immediate visual indication of the components which have not yet been edited. In this way, complete editing can be ensured. Different editing operations are possible including creating a cursor corresponding to the component to be edited, adjusting that cursor to correspond to the location, size and orientation of the component to be edited, and replacing the component with the cursor image.

Modifying a graphics display image

In the case where a map is used as a figure upon vertical scrolling for enlarging or reducing a map having a predetermined accuracy, a map having a higher accuracy as well as a map having a less amount of graphic data are subjected to vertical scrolling so that the map having a lower accuracy or the less amount of data is displayed superposing on the map having the higher accuracy. Upon vertical scrolling, the speed of vertical scrolling is improved in such a manner that the brightness of one of the maps which is gradually reduced is decreased to an extent in which a positional relation of the one map with the other map which is gradually enlarged is not unrecognizable to an operator and the one map displayed with a predetermined size is erased from a display device when the brightness of the one map is decreased to zero. Even in the case where the above-mentioned vertical scrolling and horizontal scrolling are used in combination, the scrolling is made with an improved speed. In the case where a three-dimensional figure is to be subjected to horizontal scrolling, a two-dimensional version of the three-dimensional figure from which information of height is eliminated is subjected to visual-point conversion and the visual-point converted two-dimensional figure is used upon horizontal scrolling, thereby improving the speed of horizontal scrolling.

Growing community of inventors

Nishitokyo, Japan

Kazuaki Iwamura