Patents by Inventor Yasufumi Hirakawa
Yasufumi Hirakawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20190197847Abstract: A setting assistance device includes an acquisition unit, a calculation unit and a determination unit. The acquisition unit acquires coordinates designated by a user for an image capturing a three-dimensional space. The calculation unit calculates coordinates of a position located at a predetermined distance from a position of a part of the three-dimensional space relating to the acquired coordinates. The determination unit determines a region set for the acquired coordinates based on the calculated coordinates.Type: ApplicationFiled: March 5, 2019Publication date: June 27, 2019Applicant: NEC CORPORATIONInventor: Yasufumi Hirakawa
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Publication number: 20190156508Abstract: Provided is an analysis apparatus (10) including a person extraction unit (11) that analyzes video data to extract a person, a time calculation unit (12) that calculates a continuous appearance time period for which the extracted person has been continuously present in a predetermined area and a reappearance time interval until the extracted person reappears in the predetermined area for each extracted person, and an inference unit (13) that infers a characteristic of the extracted person on the basis of the continuous appearance time period and the reappearance time interval.Type: ApplicationFiled: January 28, 2019Publication date: May 23, 2019Applicant: NEC CorporationInventors: Yasufumi HIRAKAWA, Jianquan LIU, Shoji NISHIMURA, Takuya ARAKI
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Publication number: 20190156509Abstract: Provided is an analysis apparatus (10) including a person extraction unit (11) that analyzes video data to extract a person, a time calculation unit (12) that calculates a continuous appearance time period for which the extracted person has been continuously present in a predetermined area and a reappearance time interval until the extracted person reappears in the predetermined area for each extracted person, and an inference unit (13) that infers a characteristic of the extracted person on the basis of the continuous appearance time period and the reappearance time interval.Type: ApplicationFiled: January 28, 2019Publication date: May 23, 2019Applicant: NEC CorporationInventors: Yasufumi HIRAKAWA, Jianquan LIU, Shoji NISHIMURA, Takuya ARAKI
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Publication number: 20190035106Abstract: Provided is an analysis apparatus (10) including a person extraction unit (11) that analyzes video data to extract a person, a time calculation unit (12) that calculates a continuous appearance time period for which the extracted person has been continuously present in a predetermined area and a reappearance time interval until the extracted person reappears in the predetermined area for each extracted person, and an inference unit (13) that infers a characteristic of the extracted person on the basis of the continuous appearance time period and the reappearance time interval.Type: ApplicationFiled: February 13, 2017Publication date: January 31, 2019Applicant: NEC CorporationInventors: Yasufumi HIRAKAWA, Jianquan LIU, Shoji NISHIMURA, Takuya ARAKI
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Publication number: 20180350212Abstract: The conventional image surveillance technologies relevant to the present invention had the potential of failing in detection due to the intrusion duration time being set too long and thereby allowing an intruder to pass a warning line before the preset intrusion duration had elapsed. The intrusion detection device according to the present invention is provided with: a detection means that detects, in an image, an intrusion position in a specific region by an object that has intruded into the specific region; and a control means that associates the intrusion position with a prescribed time period, wherein the detection means outputs an alert when the object, in the image, has stayed in the specific region for the prescribed time period or longer.Type: ApplicationFiled: December 16, 2016Publication date: December 6, 2018Applicant: NEC CORPORATIONInventor: Yasufumi HIRAKAWA
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Publication number: 20180330151Abstract: A data processing apparatus (1) of the present invention includes a unit that retrieves a predetermined subject from moving image data. The data processing apparatus includes a person extraction unit (10) that analyzes moving image data to be analyzed and extracts a person whose appearance frequency in the moving image data to be analyzed satisfies a predetermined condition among persons detected in the moving image data to be analyzed, and an output unit (20) that outputs information regarding the extracted person.Type: ApplicationFiled: October 25, 2016Publication date: November 15, 2018Applicant: NEC CorporationInventors: Jianquan LIU, Shoji NISHIMURA, Takuya ARAKI, Yasufumi HIRAKAWA
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Publication number: 20170013230Abstract: A video processing system includes: an object movement information acquiring means for detecting a moving object moving in a plurality of segment regions from video data obtained by shooting a monitoring target area, and acquiring movement segment region information as object movement information, the movement segment region information representing segment regions where the detected moving object has moved; an object movement information and video data storing means for storing the object movement information in association with the video data corresponding to the object movement information; a retrieval condition inputting means for inputting a sequence of the segment regions as a retrieval condition; and a video data retrieving means for retrieving the object movement information in accordance with the retrieval condition and outputting video data stored in association with the retrieved object movement information, the object movement information being stored by the object movement information and video dType: ApplicationFiled: February 5, 2015Publication date: January 12, 2017Applicant: NEC CorporationInventor: Yasufumi HIRAKAWA
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Patent number: 9495754Abstract: A person's region is detected from input video of a surveillance camera; a person's direction in the person's region is determined; the separability of person's clothes is determined to generate clothing segment separation information; furthermore, clothing features representing visual features of person's clothes in the person's region are extracted in consideration of the person's direction and the clothing segment separation information. The person's direction is determined based on a person's face direction, person's motion, and clothing symmetry. The clothing segment separation information is generated based on analysis information regarding a geometrical shape of the person's region and visual segment information representing person's clothing segments which are visible based on the person's region and background prior information.Type: GrantFiled: October 7, 2014Date of Patent: November 15, 2016Assignee: NEC CORPORATIONInventors: Ryoma Oami, Yasufumi Hirakawa, Yusuke Takahashi
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Patent number: 9462160Abstract: It is made possible to easily correct the color tone changing from region to region in an image without the need of preparing a color chart for each region where the color tone changes due to factors such as light source change.Type: GrantFiled: November 19, 2013Date of Patent: October 4, 2016Assignee: NEC CORPORATIONInventor: Yasufumi Hirakawa
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Publication number: 20150334267Abstract: It is made possible to easily correct the color tone changing from region to region in an image without the need of preparing a color chart for each region where the color tone changes due to factors such as light source change.Type: ApplicationFiled: November 19, 2013Publication date: November 19, 2015Inventor: Yasufumi Hirakawa
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Patent number: 8977005Abstract: Provided is a carried item region extraction device for accurately extracting a carried item region from an image. This carried item region extraction device has: a string region processing unit for extracting a string region including a string of a carried item from image information; and a carried item region processing unit for extracting a carried item region including a carried item from the image information on the basis of the string region.Type: GrantFiled: September 15, 2011Date of Patent: March 10, 2015Assignee: NEC CorporationInventor: Yasufumi Hirakawa
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Publication number: 20150023596Abstract: A person's region is detected from input video of a surveillance camera; a person's direction in the person's region is determined; the separability of person's clothes is determined to generate clothing segment separation information; furthermore, clothing features representing visual features of person's clothes in the person's region are extracted in consideration of the person's direction and the clothing segment separation information. The person's direction is determined based on a person's face direction, person's motion, and clothing symmetry. The clothing segment separation information is generated based on analysis information regarding a geometrical shape of the person's region and visual segment information representing person's clothing segments which are visible based on the person's region and background prior information.Type: ApplicationFiled: October 7, 2014Publication date: January 22, 2015Applicant: NEC CORPORATIONInventors: Ryoma OAMI, Yasufumi HIRAKAWA, Yusuke TAKAHASHI
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Patent number: 8913873Abstract: Provided is a content reproduction control system equipped with: a signal characterizing quantity sequence extraction means that, for each content item stored in a content group storage unit that stores at least more than one content item, extracts a signal characterizing quantity sequence which is the sequence of the signal characterizing quantities associated with the content positions on the time axis; a common section group detection means that detects, as a common section group in the signal characterizing quantity sequence for each content item, a common section group for which the signal characterizing quantities for different content items are similar to each other; a content reproduction quality information collection means that, for each common section group, collects content reproduction quality information which indicates the reproduction quality of the content to which each common section of a common section group belongs; and a content reproduction control means that, when the content containedType: GrantFiled: June 22, 2009Date of Patent: December 16, 2014Assignee: NEC CorporationInventors: Kota Iwamoto, Ryoma Oami, Yuzo Senda, Takahiro Kimoto, Takami Sato, Yasufumi Hirakawa
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Patent number: 8891880Abstract: A person's region is detected from input video of a surveillance camera; a person's direction in the person's region is determined; the separability of person's clothes is determined to generate clothing segment separation information; furthermore, clothing features representing visual features of person's clothes in the person's region are extracted in consideration of the person's direction and the clothing segment separation information. The person's direction is determined based on a person's face direction, person's motion, and clothing symmetry. The clothing segment separation information is generated based on analysis information regarding a geometrical shape of the person's region and visual segment information representing person's clothing segments which are visible based on the person's region and background prior information.Type: GrantFiled: October 13, 2010Date of Patent: November 18, 2014Assignee: NEC CorporationInventors: Ryoma Oami, Yasufumi Hirakawa, Yusuke Takahashi
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Patent number: 8879004Abstract: A high-quality content generating system provided with a feature amount extracting means for extracting the feature amounts of a plurality of pieces of content therefrom, a content grouping means for performing matching between the feature amounts of the plurality of pieces of content extracted by the feature amount extracting means, grouping the same content included in the plurality of pieces of content and the derived content produced by using the same content, and calculating same/derived content grouping information, and a high-quality content generating means for selecting pieces of content to be grouped by the same/derived content grouping information from the plurality of pieces of content and generating content with higher quality by using the selected content.Type: GrantFiled: June 16, 2009Date of Patent: November 4, 2014Assignee: NEC CorporationInventors: Ryoma Oami, Kota Iwamoto, Takami Sato, Yasufumi Hirakawa, Yuzo Senda, Takahiro Kimoto
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Patent number: 8819558Abstract: An edited section information acquisition unit generates edited section information and edited section association information based on edit history information. Pre-edit content/post-edit content correspondence relationship acquisition unit groups consecutive edited groups based on the edited section information of the edited section information acquisition unit and generates group information. An edited section information display screen generation unit generates screen information based on the edited section information and the edited section association information of the edited section information acquisition unit, the group information, inter-group association information, section/group association information of the pre-edit content/post-edit content correspondence relationship acquisition unit, and input information of an input unit. A provision unit displays the screen information obtained by the edited section information display screen generation unit.Type: GrantFiled: December 25, 2009Date of Patent: August 26, 2014Assignee: Nec CorporationInventor: Yasufumi Hirakawa
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Publication number: 20140193034Abstract: The present invention accurately detects an object from a video image where large distortion of an image may be generated for covering a wide field of view.Type: ApplicationFiled: May 21, 2012Publication date: July 10, 2014Applicant: NEC CORPORATIONInventors: Ryoma Oami, Yasufumi Hirakawa
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Patent number: 8655147Abstract: A system comprising: a extraction unit that extracts from each content a signal feature series, being a series of signal features caused to correspond to positions on a time axis of the content; a generator for detects mutual similarity sections, being sections in which the signal features for different contents are similar to each other, from said signal feature series for each content, and generates the content to which each mutual similarity section belongs, information for specifying the position of the above mutual similarity section on the time axis of the content, and a link indicative of a correspondence relation of the mutual similarity section as mutual similarity section link information; and a determination unit that determines a reproduction order of the content based upon a relationship of the position of the mutual similarity section on the time axis of the content that said mutual similarity section link information indicates.Type: GrantFiled: June 22, 2009Date of Patent: February 18, 2014Assignee: NEC CorporationInventors: Kota Iwamoto, Ryoma Oami, Yuzo Senda, Takahiro Kimoto, Takami Sato, Yasufumi Hirakawa
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Publication number: 20130182962Abstract: Provided is a carried item region extraction device for accurately extracting a carried item region from an image. This carried item region extraction device has: a string region processing unit for extracting a string region including a string of a carried item from image information; and a carried item region processing unit for extracting a carried item region including a carried item from the image information on the basis of the string region.Type: ApplicationFiled: September 15, 2011Publication date: July 18, 2013Applicant: NEC CORPORATIONInventor: Yasufumi Hirakawa
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Patent number: 8306992Abstract: A system for determining content topicality comprises a feature value extracting means which extracts feature values of a plurality of contents from the contents; a content grouping means which compares the feature values of the plurality of contents extracted by the feature value extracting means, obtains identical contents and derived contents created using the contents, both of which are included in the plurality of contents, and groups the identical/derived contents, thereby computing identical/derived content grouping information; and a topicality determining means which totals viewing frequencies of the contents determined to be the identical/derived contents from viewing history information and the identical/derived content grouping information relating to the plurality of contents, computes total viewing frequencies of each of the identical/derived contents, and determines the topicality of the identical/derived contents according to the total viewing frequency.Type: GrantFiled: June 16, 2009Date of Patent: November 6, 2012Assignee: NEC CorporationInventors: Ryoma Oami, Kota Iwamoto, Takami Sato, Yasufumi Hirakawa, Yuzo Senda, Takahiro Kimoto