Abstract: A video recording apparatus includes a recording device having a location information area and a video data area. The location information area stores location information of video data stored in the video data area. The video data area stores the video data in units of blocks with a size of 1 MB or greater. The tail end of the block is used as a table of contents region for storing table of contents information of a plurality of the most-recent blocks. By providing the table of contents regions at a predetermined frequency, the tables of contents of all blocks being used in the video data area are retained in a distributed and redundant manner. Whenever the power supply is re-activated, the tables of contents regions are read, and pieces of the table of contents information are joined appropriately to construct a complete table of contents in memory.

Abstract: The present invention provides a system for visualizing the congestion degree of an entire facility using a monitoring camera. The system detects a crowd from a monitoring camera video and derives the magnitude (number of people) of the crowd from the edge amount thereof, and thereby estimates a congestion state in a range of camera video. The system also calculates a human flow (amount of movement of people) on the basis of a number of passing people counter and the magnitude and movement speed of the crowd, etc., and estimates the number of people in an area other than the range of camera video on the basis of a modeled crowd behavior pattern. The model is constructed by selecting a distribution function and a parameter thereof by a statistical model selection technique such as a Bayesian Information Criteria (BIC). The congestion state is plotted on a map, allowing the congestion state of an area of interest to be grasped at once.

Abstract: The present invention provides a system for visualizing the congestion degree of an entire facility using a monitoring camera. The system detects a crowd from a monitoring camera video and derives the magnitude (number of people) of the crowd from the edge amount thereof, and thereby estimates a congestion state in a range of camera video. The system also calculates a human flow (amount of movement of people) on the basis of a number of passing people counter and the magnitude and movement speed of the crowd, etc., and estimates the number of people in an area other than the range of camera video on the basis of a modeled crowd behavior pattern. The model is constructed by selecting a distribution function and a parameter thereof by a statistical model selection technique such as a Bayesian Information Criteria (BIC). The congestion state is plotted on a map, allowing the congestion state of an area of interest to be grasped at once.

Abstract: A video recording apparatus includes a recording device having a location information area and a video data area. The location information area stores location information of video data stored in the video data area. The video data area stores the video data in units of blocks with a size of 1 MB or greater. The tail end of the block is used as a table of contents region for storing table of contents information of a plurality of the most-recent blocks. By providing the table of contents regions at a predetermined frequency, the tables of contents of all blocks being used in the video data area are retained in a distributed and redundant manner. Whenever the power supply is re-activated, the tables of contents regions are read, and pieces of the table of contents information are joined appropriately to construct a complete table of contents in memory.

Abstract: A strain inspection apparatus is provided that includes a drive mechanism for rotating a polarizing plate corresponding to an analyzer and that can perform a test without the polarizing plate being manually rotated by an operator. A strain inspection apparatus includes a camera, a second polarizing plate, a quarter wavelength plate, a first polarizing plate, a diffusion plate, a light source and a drive mechanism for stepwise rotating the second polarizing plate at an arbitrary angle. The camera, the second polarizing plate, the quarter wavelength plate, the first polarizing plate, the diffusion plate and the light source are aligned on the same axis (test axis), and the drive mechanism automatically rotates the second polarizing plate corresponding to an analyzer so as to measure a retardation and an optical axis direction.

Abstract: A video processing apparatus obtains information describing the amount of displacement of images in multiple predetermined units (such as video durations) imaged by an imaging apparatus from an image at steady state, which is a reference, and displays the images in the multiple predetermined units in decreasing order of amounts of displacement based on the obtained information describing the amounts of displacement.

Abstract: An apparatus being mounted on a car of a train, video-recording video data from an internet protocol (IP) camera, and transferring the video data outside the car, comprises a network digital recorder (NDR) performing video-recording of the video data from the IP camera in a full-time, an archive-type NDR (A-NDR) reading the video-recorded video data from the NDR to record it, a communication device determining priority of a communication to and from the outside of the car to establish a communication path to and from a partner communication device in a communicable state, and a control device reading the recorded video data from the A-NDR to transfer the video data to the partner communication device via the communication path. The A-NDR ranks each item of the video data with importance, and the control device controls the video data so as to read it in descending order of ranking.

Abstract: Provided are a recorded content display program and a recorded content display apparatus which effectively display the recorded contents of video image recording apparatuses connected in plural. To display the recorded contents of the images when the image recording apparatuses for recording the images taken by a camera are connected in plural, the image retaining ranges for the image recording apparatuses connected in plural are arranged and shown on the one screen with the horizontal axis determined as a time direction. And, the image retaining ranges for the image recording apparatuses are displayed with their displays varied visually depending on a frame rate.

Abstract: An image storage system effectively stores image data captured by an image capture device in a plurality of image storage devices. Each of the image storage devices includes a storage unit for storing image data. An image storage device performing as a master among the image storage devices includes an image reception unit for receiving the image data captured by the image capture device. A storage unit provided in each of the image storage devices distributes the image data received by the image reception unit provided in the image storage device performing as the master to the respective image storage devices so as to be stored there.

Abstract: A recording apparatus employs a circulating recording scheme for overwriting the oldest recorded data in a recording area having a limited storage capacity with the latest recorded data. The recording apparatus includes a memory device and a data recovery unit. The memory device includes a data recording area for recording data, an index information area for recording index information related to the data recorded in the data recording area, and a reserve index information area provided in part of the data recording area for recording substantially the same index information as the index information. When an error is found in index information recorded in the index information area, the data recovery unit recovers the index information in the index information area based on the index information in the reserve index information area.

Abstract: In an image recording/reproduction method for recording image information on a recording medium by using a computer, a verify mode is set into the OFF state when recording image information on said recording medium. In addition, use as a write or read region a specified region of the recording medium which is greater than or equal to a unitary data size being handled during error correction processing to be performed when writing or reading image information on or out of said recording medium. Additionally, upon reading of image information from the recording medium, any image information that has experienced read errors will never be read again.

Abstract: A circulating memory apparatus and a data storage and distribution system using a circulating recording area effectively and having an improved access efficiency to the circulating recording area are disclosed. A memory area secured in a disk unit is used in circulation thereby to record the time series input data. The time series input data are edited into a data block of a predetermined size including a plurality of subblocks, and written into the disk unit by data block. In response to a request for outputting specific data, the data are read by subblock from the disk unit into a cache memory thereby to selectively output the specific data contained in the subblocks.

Abstract: An apparatus being mounted on a car of a train, video-recording video data from an internet protocol (IP) camera, and transferring the video data outside the car, comprises a network digital recorder (NDR) performing video-recording of the video data from the IP camera in a full-time, an archive-type NDR (A-NDR) reading the video-recorded video data from the NDR to record it, a communication device determining priority of a communication to and from the outside of the car to establish a communication path to and from a partner communication device in a communicable state, and a control device reading the recorded video data from the A-NDR to transfer the video data to the partner communication device via the communication path. The A-NDR ranks each item of the video data with importance, and the control device controls the video data so as to read it in descending order of ranking.

Abstract: An efficient signature technology is provided, which is capable of arbitrary extraction and storage from a plurality of pieces of data and which can make a signature length relatively short. In a signature device (180), a mathematical function computing unit (190) repeats processing of calculating a hash value from a coupled value obtained by coupling together hash values calculated from each of the plurality of pieces of data to calculate one hash value (h), and calculates a signature value from the calculated one hash value. Then, a signature processing unit (189) generates, for one piece of data contained in the plurality of pieces of data, a signature containing the calculated signature value and a hash value coupled to another hash value calculated from the one piece of data before the one hash value (h) is calculated.

Abstract: A video processing apparatus obtains information describing the amount of displacement of images in multiple predetermined units (such as video durations) imaged by an imaging apparatus from an image at steady state, which is a reference, and displays the images in the multiple predetermined units in decreasing order of amounts of displacement based on the obtained information describing the amounts of displacement.

Abstract: Provided are a recorded content display program and a recorded content display apparatus which effectively display the recorded contents of video image recording apparatuses connected in plural. To display the recorded contents of the images when the image recording apparatuses for recording the images taken by a camera are connected in plural, the image retaining ranges for the image recording apparatuses connected in plural are arranged and shown on the one screen with the horizontal axis determined as a time direction. And, the image retaining ranges for the image recording apparatuses are displayed with their displays varied visually depending on a frame rate.

Abstract: An image storage system effectively stores image data captured by an image capture device in a plurality of image storage devices. Each of the image storage devices includes a storage unit for storing image data. An image storage device performing as a master among the image storage devices includes an image reception unit for receiving the image data captured by the image capture device. A storage unit provided in each of the image storage devices distributes the image data received by the image reception unit provided in the image storage device performing as the master to the respective image storage devices so as to be stored there.

Abstract: A recording apparatus employs a circulating recording scheme for overwriting the oldest recorded data in a recording area having a limited storage capacity with the latest recorded data. The recording apparatus includes a memory device and a data recovery unit. The memory device includes a data recording area for recording data, an index information area for recording index information related to the data recorded in the data recording area, and a reserve index information area provided in part of the data recording area for recording substantially the same index information as the index information. When an error is found in index information recorded in the index information area, the data recovery unit recovers the index information in the index information area based on the index information in the reserve index information area.

Abstract: In an image recording/reproduction method for recording image information on a recording medium by using a computer, a verify mode is set into the OFF state when recording image information on said recording medium. In addition, use as a write or read region a specified region of the recording medium which is greater than or equal to a unitary data size being handled during error correction processing to be performed when writing or reading image information on or out of said recording medium. Additionally, upon reading of image information from the recording medium, any image information that has experienced read errors will never be read again.

Abstract: The invention provides a circulating recording apparatus which can dynamically modify the capacity of a circulating recording area while holding a predetermined amount of recording data corresponding to the past. A single circulating recording area of the circulating recording apparatus can include memory areas distributed among a plurality of recording media. The circulating recording apparatus includes a circulating recording area management table composed of a plurality of table entries corresponding to the number of memory blocks constituting the circulating recording area and each entry includes pointer information for accessing the memory blocks and contents information of the data stored in the memory blocks. The data block write operation into the circulating recording area in a circulating manner and the data read operation from a specified memory block are conducted in accordance with the circulating recording area management table.