Abstract: Provided is a cursor display method of displaying a cursor, indicating a focus point while being manipulatable to move, in a two-dimensional image in which sets of laser point cloud data distributed on a three-dimensional coordinate system are shown on the basis of a predetermined view point position. The cursor display method includes: performing arithmetic on a position on the three-dimensional coordinate system which corresponds to the focus point in the two-dimensional image; defining a predetermined plane graphic region, including the corresponding position and being orthogonal to a view point position direction, on the three-dimensional coordinate system on the basis of the corresponding position; dividing a view region, originating from the view point position passing through the plane graphic region, into segments on the basis of the plane graphic region; and performing non-display processing on sets of laser point cloud data placed in any one of the divided segments.

Abstract: A photography unit photographs a target, a control unit acquires distance data between a photography position and a target to be photographed of the photography unit, an azimuth angle and an elevation/depression angle of a photography direction of the photography unit together with the image information by an angle distance measurement unit synchronously or asynchronously to the shutter operation of the photography unit. The angle distance measurement unit has a configuration without using an axis fixed onto a mobile object. Coordinate information of the photography position of the photography unit is acquired from the coordinate measurement unit synchronously to asynchronously to the shutter operation. The control unit calculates coordinate information of a photographing target, based on the data of the acquired distance data, the azimuth, elevation and depression angles, and the coordinate information.

Abstract: Provided is a method for detecting damage to a deck of a bridge, the method allowing detection work to be achieved with less labor and being capable of reducing the time and cost needed for the detection work. From a road-surface measuring vehicle running on pavement 3 on top of a steel-plate deck 1, a thermal infrared video of the surface of the pavement 3 is acquired by a thermal infrared video camera. Based on the thermal infrared video, troughs 4 of the steel-plate deck 1 are detected to grasp the structure of the steel-plate deck 1. Residence of water inside prescribed trough members 41 and sealing diaphragms 42 is detected from low-temperature regions R2 from among regions corresponding to troughs 4 in the thermal infrared video, and from rectangular low-temperature sections L2 that surround the regions R2. Through cracks are detected in deck plates 2 that correspond to troughs 4 in which residence of water has been detected.

Abstract: The method includes divisionally-capturing a target region from a platform such as an airplane (1) by rendering viewing angles as being different from each other as well as rendering a focal length (f, f?) as being different with reference to a predetermined ground resolution, thereafter generating an elevation model (5) of the entire target region (1) in accordance with matching of elevation models (3, 3) generated based on respective divisionally-captured images (2) between image capturing overlap regions (4), and generating an orthophoto image of the entire target region by applying an orthogonal projection transformation processing to the respective divisionally-captured images (2) by use of altitude information of the elevation model (5).

Abstract: An object of the present invention is to provide a movable information collection apparatus capable of grasping the current situation in a timely fashion. Also, an object of the present invention is to provide a geographical monitoring system capable of utilizing the movable information collection apparatus. The movable information collection apparatus includes an observation data collection antenna system that receives observation data obtained by observing an observation target area from the air, a geographic information database that stores previously acquired geographic information in the observation target area, an evaluation calculation unit that calculates and outputs a difference between the observation data and the previously acquired geographic information, the observation data collection antenna system, the geographic information database, and the evaluation calculation unit being mounted on a movable pedestal.

Abstract: Provided is a data analysis device for automatically detecting a step on the ground based on point cloud data representing a three-dimensional shape of a feature surface. A space subject to analysis is divided into a plurality of subspaces. A boundary search unit (22) searches for a boundary formed by the step on a horizontal plane for each of the subspaces. The boundary search unit (22) searches for a step neighborhood area having a predetermined width, in which the points projected on the horizontal plane are accumulated equal to or more than a criterion set in advance and a cloud of the points have a difference in height equal to or more than a step threshold set in advance, and searches for a directional line along a distribution of the cloud of points belonging to the step neighborhood area on the horizontal plane as the boundary.

Abstract: When a manager uses an input device to input the inspected states of the degrees of soundness of a plurality of objects, a data receiving unit receives them as inspection data. A deterioration characteristic calculating unit calculates the average value of the deterioration characteristics of the objects based on data related to the degrees of soundness of the plurality of objects that is received by the data receiving unit. A heterogeneous parameter calculating unit calculates a heterogeneous parameter for each heterogeneous factor that cannot be observed or is difficult to observe, and causes a variation in the deterioration characteristics. A benchmarking unit evaluates the influence of the heterogeneous factors on the deterioration characteristics based on the heterogeneous parameters, and an output unit outputs the evaluation result.

Abstract: Provided is a building roof outline recognition device which facilitates automation. A small-building candidate region is extracted based on normalized DSM data using a region segmentation method. By using the building candidate region as a marker and further using height information included in the normalized DSM data and the like, a building region is extracted using a region growing method. While referencing the height information, from among edges appearing in the orthoimage, edges fitting with an outer shape of the building region are extracted as an outer shape of the roof when viewed from above. Further, for a building judged to have a slanted roof, a roof structure line which is the boundary between the roof surfaces is extracted from the building region, and a three-dimensional structure of the building roof outline is determined from the roof outer shape and the roof structure line.

Abstract: In the case where radar image data obtained from a radar device equipped in a flying body and optical image data of a district taken by the radar device are synthesized to produce a terrestrial object information judging image, the radar image data are approximated to a black and white panchromatic image character. The radar image data approximated to the black and white panchromatic character and the optical image data are aligned in position and then synthesized. As a suitable embodiment, in an approximation processing of the radar image data to the black and white panchromatic image character, histogram conversion processing is carried out in accordance with a histogram characteristic of the radar image data.

Abstract: It is an object to improve the accuracy of a house change judgment based on images and the like acquired by an airplane. A terrain altitude is subtracted from an attitude value of a digital surface model (DSM) acquired from an airplane or the like to generate a normalized DSM (NDSM). A judgment target region is segmented into a plurality of regions of elevated part for each elevated part with a size corresponding to a house appearing on the NDSM. An outline of the house is extracted from each region of elevated part and a house object containing three-dimensional information on the house is defined by the outline and NDSM data within the outline. The house objects acquired at two different time points, respectively, are compared to detect a variation between the two different time points, and a judgment as to a house change is made based on the variation.

Abstract: Vegetation growth condition analyzer, method and record medium using plural radar imaees of a ground surface of a same target area, which have been laken at multiple times during the year obtained from a flying body, e.g. an artificial satellite are disclosed. These images are stored in a map database and aligned wjth a criterion image. Extracting a backscatter coefficient of a specified target area in the criterion image from the map database and calibrating the backscatter coefficients of other radar images are entailed. Finally, calculating growth values of vegetation shown in the radar images by use of the calibrated backscatter coefficients are obtained.

Abstract: Provided is a cursor display method of displaying a cursor, indicating a focus point while being manipulatable to move, in a two-dimensional image in which sets of laser point cloud data distributed on a three-dimensional coordinate system are shown on the basis of a predetermined view point position. The cursor display method includes: performing arithmetic on a position on the three-dimensional coordinate system which corresponds to the focus point in the two-dimensional image; defining a predetermined plane graphic region, including the corresponding position and being orthogonal to a view point position direction, on the three-dimensional coordinate system on the basis of the corresponding position; dividing a view region, originating from the view point position passing through the plane graphic region, into segments on the basis of the plane graphic region; and performing non-display processing on sets of laser point cloud data placed in any one of the divided segments.

Abstract: A house change judging method is provided for judging a change of a house in a data acquisition region based on new and old data concerning two periods, which have been aerially acquired, including: extracting as a judgment target region a predetermined region in the new data by trimming with house polygon data corresponding to a predetermined region prepared in advance; computing, after the extraction, as evaluation values, two kinds of new and old difference values between the two periods with respect to a gradation value of color image data and an altitude value of altitude data across the entire judgment target region; and judging, after the computation, based on the evaluation values, whether a house change has occurred in the judgment target region by referring to a judging table including combinations of two kinds of preset evaluation criterion values.

Abstract: There is provided a system for detecting a shape change of a building based upon an aerial photograph taken by an airplane. The system can process the aerial photograph without waiting for the airplane to land. On the airplane, edges are extracted directly from a central projected photographed image to be transmitted wirelessly to a ground station. This ground station extracts segments from the edges to thereby determine a shape of the building in the photographed image. On the other hand, the ground station generates a projected image of the building, which is obtained by central projecting existing three-dimensional data from a flying position of the airplane, and matches the projected image and the shape of the building obtained from the photographed image. According to a similarity between the two through the matching, it is decided whether or not the shape of the building has changed from the time of registration of the existing three-dimensional data.

Abstract: Measurement of 3D displacement based on successively captured images of an object becomes difficult to be performed due to a load imposed on an operator along with an increase of the number of target portions defined on the object and that of time steps for displacement measurement. A device for displacement measurement executes stereo measurement relative to a stereo image to generate 3D shape information and orthographically projected image of an object for each time, and tracks the 2D image of the target portion through pattern matching between orthographically projected images at successive times to obtain a 2D displacement vector. The device for displacement measurement converts the start point and the end point of the 2D displacement vector into 3D coordinates, using the 3D shape information, to obtain a 3D displacement vector.

Abstract: An orthographic projection creating unit creates an orthographic projection image from an optical image of an ground surface acquired by an optical camera, and a DSM generating unit generates a DSM from the orthographic projection image. A laser point group data generating unit generates three-dimensional point group data based on a laser measurement result of the ground surface by a laser measuring device. An object generating unit groups altitude data of the DSM and altitude data of the three-dimensional point group data for each of objects such as buildings. A synthesizing unit extracts the same objects from the grouped altitude data of the DSM and three-dimensional point group data, associates the objects with each other based on respective coordinate information thereof, and replaces altitude information of the optical image by high-accuracy altitude information of the three-dimensional point group data for each of the objects.

Abstract: A photography unit photographs a target, a control unit acquires distance data between a photography position and a target to be photographed of the photography unit, an azimuth angle and an elevation/depression angle of a photography direction of the photography unit together with the image information by an angle distance measurement unit synchronously or asynchronously to the shutter operation of the photography unit. The angle distance measurement unit has a configuration without using an axis fixed onto a mobile object. Coordinate information of the photography position of the photography unit is acquired from the coordinate measurement unit synchronously to asynchronously to the shutter operation. The control unit calculates coordinate information of a photographing target, based on the data of the acquired distance data, the azimuth, elevation and depression angles, and the coordinate information.

Abstract: Provided is a data analysis device for automatically detecting a step on the ground based on point cloud data representing a three-dimensional shape of a feature surface. A space subject to analysis is divided into a plurality of subspaces. A boundary search unit (22) searches for a boundary formed by the step on a horizontal plane for each of the subspaces. The boundary search unit (22) searches for a step neighborhood area having a predetermined width, in which the points projected on the horizontal plane are accumulated equal to or more than a criterion set in advance and a cloud of the points have a difference in height equal to or more than a step threshold set in advance, and searches for a directional line along a distribution of the cloud of points belonging to the step neighborhood area on the horizontal plane as the boundary.

Abstract: An object of the invention is to provide a method and an apparatus for producing land-surface image data, which can correct, with relatively high accuracy, cloud image data included in satellite image data into land-surface image data that would emerge in the absence of a cloud. Geostationary satellite image data 1 of a predetermined time at a production standard date is obtained, and a determination whether each pixel is a pixel reflecting a land surface 4 or a pixel reflecting a cloud 5 is made to set partial image data 6 and a missing region 7. Then, processing is repeated by sequentially adding another imaging date and time according to a predetermined priority until the missing region 7 is filled up with the pixel determined to be the pixel reflecting the land surface 4, thereby producing interpolated image data 9 to produce the land-surface image data.

Abstract: Provided is a method for detecting damage to a deck of a bridge, the method allowing detection work to be achieved with less labor and being capable of reducing the time and cost needed for the detection work. From a road-surface measuring vehicle running on pavement 3 on top of a steel-plate deck 1, a thermal infrared video of the surface of the pavement 3 is acquired by a thermal infrared video camera. Based on the thermal infrared video, troughs 4 of the steel-plate deck 1 are detected to grasp the structure of the steel-plate deck 1. Residence of water inside prescribed trough members 41 and sealing diaphragms 42 is detected from low-temperature regions R2 from among regions corresponding to troughs 4 in the thermal infrared video, and from rectangular low-temperature sections L2 that surround the regions R2. Through cracks are detected in deck plates 2 that correspond to troughs 4 in which residence of water has been detected.