Nec Corporation

Daisuke Ikefuji

Osamu Hoshuyama

Taichi Tanaka

Shin Tominaga

Shigeki Shinoda

Yuzo Senda

Masayuki Ariyoshi

Yoshihiro Sato

Kenichi Ishii

Shingo Yamanouchi

Shoji Nishimura

Hirofumi Inoue

Shinya Yamasaki

Gaku Nakano

Masumi Ishikawa

Kazumine Ogura

Shota Yamamoto

Tatsuya Sumiya

Kana Takizawa

Yoshiyuki Satou

Youtarou Noda

Yoshitaka Higeta

Narumitsu Notomi

Aki Nakamura

Eishi Arita

Kazurnine Ogura

A prediction deviceof the present invention includes a detection meansfor, on the basis of a river image that is an image obtained by capturing a river and associated with capturing position information representing a position where the river is captured, detecting river condition information representing a condition of the river at the position where the river image is captured; and a prediction meansfor, on the basis of the capturing position information, the river condition information, and topography information representing the topography of the river, predicting a river condition representing a condition of the river at a given point of the river. The given point is different from the position represented by the capturing position information.

Prediction method

An activity support apparatus supports an activity of a worker at a disaster site. The activity support apparatus comprises a position acquisition unit that acquires a position of the worker, a boundary data acquisition unit that acquires boundary data that indicates a boundary of a building at the disaster site, and an entry determination unit that determines whether the worker has entered the building based on the positions of the worker acquired at different timings and the boundary data.

Activity support apparatus, activity support method, and computer readable recording medium

An activity support apparatus supports an activity of a worker at a disaster site. The activity support apparatus comprises a vibration data acquisition unit that acquires vibration data of vibrations generated by the worker, an activity level estimation unit that estimates an activity level of the worker based on the vibration data acquired by the vibration data acquisition unit, and a notification unit that notifies the activity level estimated by the activity level estimation unit.

An image processing apparatus includes at least one memory configured to store instructions, and at least one processor configured to execute the instructions to process an image of a target region, and thereby compute a proximity index being an index relating to a proximity state of a plurality of persons captured in the image, and cause a predetermined apparatus to execute predetermined control, when the proximity index satisfies a criterion.

Image processing apparatus, image processing method, and non-transitory computer-readable storage medium

The radar deviceincludes radar signal transmission and receiving meansfor obtaining radar signals, based on reflected waves received by a plurality of receiving antennas, movement estimation meansfor estimating a movement of an object that may appear in a radar image, movement discretization meansfor discretizing the estimated movement, signal dividing meansfor dividing the radar signals into a plurality of groups, Fourier transform processing meansfor applying Fourier transform to the radar signals of each of the groups, phase-compensation and synthesis processing meansfor synthesizing results of the Fourier transform after performing phase compensation corresponding to the movement of the object on the results of the Fourier transform, and imaging processing meansfor generating the radar image from the synthesized result of the Fourier transform.

Radar device, imaging method, and imaging program

A radar signal imaging deviceincludes: a transmission unitwhich transmits a radar signal toward an object to be imaged that is a non-rigid body; a position estimation unitwhich estimates the position of the object; an oscillation degree estimation unitwhich estimates an oscillation degree which is a degree of change within a predetermined period in the relative positions of feature points constituting the object; and a synthetic aperture processing unitwhich performs synthetic aperture processing on the radar signal reflected by the object on the basis of the estimated position of the object and the estimated oscillation degree.

Radar signal imaging device, radar signal imaging method, and radar signal imaging program

A synthetic aperture radar image analysis systemincludes: a phase correlation determination meanswhich determines a strength of the phase correlation between a plurality of pixels in an image selected from among a plurality of images on the basis of the plurality of images that have been photographed by a synthetic aperture radar and show the same point; a shape determination meanswhich determines a degree of similarity between the shape of the distribution of the plurality of pixels and an object shape indicated by geospatial information; and an association meanswhich associates the plurality of pixels with the object on the basis of the determined strength of the phase correlation and the determined degree of similarity.

Synthetic aperture radar image analysis system, synthetic aperture radar image analysis method, and synthetic aperture radar image analysis program

The signal processing device includes an interference processing unit which generates an interferogram from a plurality of SAR images, a coherence calculation unit which calculates coherence of the SAR images, a singular point processing unit which performs an operation for resolving singular points in the interferogram, a phase unwrapping unit which executes a phase unwrapping process using operation result of the singular point processing unit, and an SBAS analysis unit which performs displacement analysis by SBAS, using processing result of the phase unwrapping unit.

Synthetic aperture radar signal processing device and signal processing method

A synthetic aperture radar signal analysis deviceincludes: an extraction unitthat extracts a stable reflection point from time-series data acquired through observation, by a synthetic aperture radar, of a region to be observed from a predetermined observing direction; a generation unitthat generates a cluster which is a collection of stable reflection points on the basis of the extracted stable reflection point corresponding to the predetermined observing direction; an association unitthat associates the generated cluster corresponding to the predetermined observing direction with a structure indicated by map data corresponding to the region to be observed; and a synthesis unitthat performs vector-synthesis of displacement rates for a plurality of the clusters each corresponding to the observing direction associated with the structure.

Synthetic aperture radar signal analysis device, synthetic aperture radar signal analysis method, and synthetic aperture radar signal analysis program

The synthetic aperture radar image processing device includes time-series analysis unit which extracts persistent scatterers from time-series observation data for the observation direction for an observation area observed from multiple observation directions by a radar, and calculating displacement speeds of the extracted persistent scatterers, clustering unit which generates reflection point clusters by clustering extracted persistent scatterers based on their phase and position, distance calculation unit which calculates a distance between each of the persistent scatterers included in the reflection point clusters and each structure included in the observation area, representative value calculation unit which calculates each representative value for the distance between each persistent scatterer and each structure, for each reflection point cluster, and corresponding structure determination unit which associates the structure corresponding to the smallest representative value with the persistent scatterer, for each reflection point cluster.

Synthetic-aperture-radar image processing device and image processing method

A synthetic-aperture-radar-signal processing device includes a range bin selection unit which selects, from an observed image, range bins including a signal from an isolated reflection point, a phase evaluation unit which evaluates phases in an azimuth direction in the range bins, a window function multiplication unit which designs a window function on the basis of results of the evaluation by the phase evaluation unit and multiply the range bins by the window function, and a phase error correction unit which corrects the observed image by estimating a phase error from the range bins multiplied by the window function.

Synthetic-aperture-radar-signal processing device, method, and program

A synthetic aperture radar signal processing deviceincludes a persistent scatterer extraction unitwhich extracts, from time-series observation data related to an observation target observed from a plurality of observation directions by a radar, a plurality of persistent scatterers in respective observation directions; a persistent scatterer grouping unitwhich groups the plurality of persistent scatterers in each of the observation directions; a group selection unitwhich selects, in each of the observation directions, a persistent scatterer group that includes the persistent scatterers included in an analysis target from among groups generated by grouping; and a displacement speed processing unitwhich synthesize displacement speeds of the selected persistent scatterer groups.

Growing community of inventors

Tokyo, Japan

Daisuke Ikefuji