Nec Corporation

Nec C Orporation

Toshiyasu Nakao

Atsushi Kashitani

Yusuke Konishi

Yuusuke Konishi

Hisao Hayashi

Akitake Mitsuhashi

Mie Takahashi

Masanori Takaoka

Keisuke Hayakawa

Akitake Mituhasi

Information from one or more transmitters installed in a detection object area is received. The reception feature value of when a detection object is present in a predetermined position of the detection object area is measured. A reception pattern of when the detection object is present in the predetermined position is formed. The reception pattern is compared with reference reception patterns, and the presence position corresponding to the reference reception pattern most approximate to the reception pattern is acquired from a reference reception pattern database where the presence positions of the detection object and the reference reception patterns of when the detection object is present in the presence positions are associated with one another. The presence position of the detection object is estimated according to the acquired presence position. The estimated presence position of the detection object is associated with received detection object identification information.

Detection target identifying/position estimating system, its method, and program

The position detection device for detecting a position of a moving body in a predetermined environment, which includes a reception feature quantity generation unitwhich obtains, from a base station which is disposed in the environment and receives identification information transmitted by radio communication from a mobile station attached to the moving body and a reference station disposed in each area defined in advance in the environment, the identification information and a reception intensity as of the reception of the identification information to generate a reception feature quantity which correlates the reception intensity related to each of the mobile station and the reference station with the base station, a position reception feature quantity generation unitwhich generates a reception feature quantity of each area from the reception feature quantity related to the reference station taking into consideration a factor of a difference caused between generated reception feature quantities related to the mobile station and the reference station, a position reception feature quantity storage unitwhich learns a generated reception feature quantity of each area and records the quantity together with position identification information, and a position determination unitwhich searches the position reception feature quantity storage unit for a reception feature quantity most proximate to the generated reception feature quantity related to the mobile station and outputs corresponding position identification information as a position detection result.

Position detection device, position detection method and position detection program

Quantities of movements of human and matter within a detection area are detected, based on the read results of an ID holding unit arranged in the detection area or information obtained from a sensor arranged in the detection area. Parameters are decided in accordance with the detected movement quantity, and by using such parameters, whether the detecting object is within the detection area or not is detected, based on the read results of an ID holding unit attached to a detecting object. A stabilizing process is performed based on the detected movement quantities of human and matter within the detection area by employing such constitution. Thus, detection is stabilized without limiting using environment or using method.

Detection stabilizing system for RFID system, detection stabilizing method, and program for stabilizing detection

A position estimating device () which estimates the position of an object by comparing a receiving pattern obtained from ID transmitters (, . . . ) and ID receivers (, . . . ) installed in an environment with a prestored receiving pattern. Position of an object equipped with no extra device can be estimated only with the ID transmitters and ID receivers installed in an environment even in an indoor multipath environment by utilizing a fact that a receiving pattern obtained from ID transmitters (, . . . ) and ID receivers (, . . . ) installed in an environment changes depending on the position of the object.

Position estimating system, position estimating method, position estimating device and its program

A data delivery method for delivering data that are object of delivery, these data containing observation time and observation results of a prescribed object of observation, to a data-using terminal includes steps of: executing a delivery process when a delivery condition has been met; storing delivery history information that indicates the delivery history of the delivery object data; and, based on the delivery history information, generating packaged delivery information, which is information in which a plurality of delivery destinations to which the same delivery object data are simultaneously delivered are placed in correspondence. In the delivery process, based on the packaged delivery information, all types of delivery object data that have been placed in correspondence with the delivery condition that has been met are delivered to the data-using terminals of all delivery destinations that have been placed in correspondence with the delivery condition.

Data delivery system and data delivery method

In a communications network where first and second communication terminals are interconnected via a common communication medium such as a local area network, the terminals jointly establish an infrared light private communication link if they are brought close to each other. The first and second terminals communicate their network addresses to each other either via the local area network or via the private communication link, and establish a session between the communicated network addresses via the local area network if the strength of the infrared-light private communication link at the receiving end is higher than a decision threshold.

Network terminal with means for wirelessly establishing secure private link with external terminal

A network session is established by a session establishment procedure in accordance with whether or not a difference in priority of session establishment exists among a plurality of terminals for which the network session is to be established. Based on reserved connection information registered in a database, a network administration device for establishing a network session among a plurality of terminals uses a first session establishment procedure that treats all of the terminals in the same manner when there is no difference in the priority of session establishment among the plurality of terminals, and uses a second session establishment procedure that inquires and performs other operations in advance as to whether or not to establish a session with high-priority terminals and treats with priority the terminals of high-priority users when there is a difference in the priority of session establishment.

Network session control system

In a sensor network system, sensor data having a high precision (high resolution) is collected, and congestion of a communication network and an apparatus for processing the sensor data is suppressed. A sensor node has a contribution degree calculator for calculating an influence that the detected sensor information exerts upon the entire system precision (resolution). A first communicating circuit transmits sensor information responding to a calculated contribution so that no congestion caused by transmitting too large a quantity of data all at once occurs.

Sensor network system, sensor node, sensor information collector, method of observing event, and program thereof

A camera system has a rotary mirror type camera assembly including a camera, a mirror for camera arranged in front of the camera, and a mirror rotating mechanism driving the mirror for the camera, a rotary mirror type display apparatus including a monitor displaying an image picked up by the camera, a mirror for monitor arranged in front of the monitor, a finder permitting viewing of the image displayed on the monitor via the mirror for monitor, and a casing rotatable together with the mirror for monitor. The mirror for camera is rotated according to rotation of the casing and the mirror for monitor being fixed to the casing. When the casing is rotated, the mirror for monitor is rotated in display direction of the monitor in front of the monitor.

Rotary image viewing apparatus connected to a rotary mirror camera

A biaxial driving mechanism, an image inputting apparatus used this biaxial driving mechanism and a light projecting apparatus used this biaxial driving mechanism, in which a mirror positioned in front of a camera or a light projecting instrument is rotated biaxially, and takes an image of a desiring direction or projects an image to a desiring direction without having an electric connection between the mirror and a driving part, are provided. In the biaxial driving mechanism, a horizontal rotating mechanism provides a ring gear, whose center axis is the same as that of an optical axis of a camera, holds a mirror, and a motor for rotating the ring gear around the optical axis of the camera. And also, in the biaxial driving mechanism, a vertical rotating mechanism provides an end cam gear, whose center axis is the same as that of the optical axis of the camera and its thickness changes along its circumference direction, a motor for rotating the end cam gear around the optical axis of the camera, a link mechanism, whose one end is fitted to the mirror in a stage that the one end can rotate, and at the other end a rolling bearing is fitted and the rolling bearing contacts the upper face of the end cam gear, and a spring pushes the link mechanism to the end cam gear.

Biaxial driving mechanism and image inputting apparatus used this mechanism and light projecting apparatus used this mechanism

In order to perform image registration of first and second images using block matching wherein the first image is divided into a plurality of blocks, the plurality of blocks are classified into a plurality of block groups, using block matching results, such that the blocks classified into the same block group are considered to produce similar position correcting parameters. A plurality of position correcting parameters is determined with each of the plurality of block groups specified above. Thereafter, most appropriate position correcting parameters are determined, among the position correction parameters determined by referring to said first and second images.

Computer-implemented image registration

When compositing a plurality of acquired partial images, the effects of differences in viewpoint contained in the partial images can be reduced, and a high quality wide-viewfield image is inputted. An image input apparatus for photographing parts of a field to be photographed while altering the photographic direction by rotating a camera, projecting a plurality of partial images of the field to be photographed which are obtained onto a projection surface, and based on the results of this projection, conducting compositing on a composite image surface, and inputting the composite image, wherein is provided an image compositing mechanism , which employs the rotational center of the camera as the center of projection during the compositing of the plurality of partial images, and which employs, as the projection point of a pixel of a partial image, the intersection point between the projection surface which is established in space and a straight line, which is parallel to a straight line connecting the viewpoint of the camera and the pixel in the partial image in an image plane formed by the plurality of partial images, and which passes through the rotational center of the camera.

Image input method, image input apparatus, and recording medium

To provide an image input system which enables to obtain a high-precision composite image at high speed with an easy operation from divisional images taken from an object, through calculating positional relations among the divisional images at high speed and with high precision by making use of the characteristic of the image input operation; an image acquisition indicating means ( ) generates an image acquisition indication referring to a present position of a camera ( ) detected by a position detector ( ). Each of the divisional images is acquired according to the image acquisition indication automatically at fixed intervals so as to have an overlap with another of the divisional images and stored together with attribution information and acquisition condition of the divisional image. A positioning parameter determining means ( ) selects a most appropriate correction parameter of the position of the divided image to be synthesized in the composite image according to candidate parameter set nominated according to the acquisition condition.

Image input system

An image position adjustment device which can let the user adjust alignment between two or more images easily and efficiently includes a feature extraction section, a display image generation section, and a displaying order setting section. The feature extraction section generates feature images which provide the user with clues effective for image position adjustment procedure corresponding to each of the images. The display image generation section generates a 'display image' for part or the whole of an image which has been selected by the user as the target of image position adjustment, using corresponding part or the whole of the feature image of the selected image. And the displaying order setting section sets displaying order of images so that the display image which has been generated by the display image generation section using the feature image of the selected image can be displayed in front of other images, and lets a display section display the images according to the displaying order. The user can adjust alignment between two or more images easily and efficiently, easily determining whether or not the selected image is in proper alignment with other images.

Device and computer-readable record medium for image position adjustment

In order to provide a still image reader enabling easy acquisition of high resolution image data of a desired scope, sufficiently portable and not expensive at the same time, a multi-shot still image reader of the invention comprises a position detector (11) for detecting each position of the camera unit (10) from where each of the plurality of partial images is taken; a frame for unitizing the position detector (11) and the camera unit (10) and enabling displacement of the camera unit (10) parallel to the object; and means (14) for calculating candidate vectors for each of the plurality of partial images, a correction vector giving a correct position where said each of the plurality of partial images is to be synthesized being selected among said candidate vectors.

Growing community of inventors

Tokyo, Japan

Toshiyasu Nakao