International Business Machines Corporation

Beijing Zitiao Network Technology Co., Ltd.

Xi Sun

Bo Gao

Wen Hao An

Liya Fan

Yuzhou Zhang

Wei Sun

Zhi Hu Wang

Ning Duan

Li Li

Ke Hu

Wei Shan Dong

Peng Gao

Chang Jie Guo

Feng Juan Wang

Wen Ting Mo

Hengkai Guo

Embodiments of the present disclosure relate to a calibration verification method for a camera intrinsic parameter, an apparatus, a device, and a medium. The method includes: acquiring a plurality of reference images photographed by a target camera with a plurality of reference world coordinates under a preset photographing condition, wherein the camera intrinsic parameter of the target camera is calibrated; determining, a first coordinate change parameter corresponding to the plurality of reference world coordinates according to the preset photographing condition, and determining a second coordinate change parameter of the plurality of reference images according to a preset algorithm; determining whether the second coordinate change parameter is consistent with the first coordinate change parameter; and if the second coordinate change parameter is consistent with the first coordinate change parameter, feeding back a verification message indicating successful calibration of the camera intrinsic parameter.

Calibration verification method for camera intrinsic parameter and apparatus, device, and medium

The present invention relates to multi-user analytical system and corresponding device and method. The device includes an interception module configured to intercept a user's request for a first core object, wherein the first core object belongs to core object; a transformation module configured to create, in response to the request being a creation request, the first core object specific to the user; a mapping module configured to interpret, in response to the request being a non-creation request, the request as a request for the first core object specific to the user. The present invention also includes an isolation method for the multi-user analytical system. The technical solutions provided in the present invention can effectively enable multiple users to share physical resources in the analytical system, and the users are isolated from each other in a substantially transparent way.

Multi-user analytical system and corresponding device and method

The invention relates to compressed data transmission in wireless data communication. Disclosed are methods and apparatuses for transporting residue of vehicle position data via a wireless network. A disclosed method for transporting residue of vehicle position data via a wireless network, includes the steps of: receiving data for updating residue encoding schema from a monitoring server; constructing a residue encoding schema based on the data, thereby producing a constructed residue encoding schema; and storing the constructed residue encoding schema such that the constructed residue encoding schema will become the current residue encoding schema; where: the constructed residue encoding schema is constructed such that each residue of the constructed residue encoding schema corresponds to a code; and the constructed residue encoding schema is constructed such that a residue having a relatively high probability of occurrence corresponds to a code of relatively short length.

Transporting residue of vehicle position data via wireless network

The present invention relates to a switch monitoring method and a switch monitoring system, a railway line management method and a railway line management system. Electric signal of a switch motor during pulling of the switch can effectively reflect status of the switch, when the switch is in a stable state, electric signal of its motor is very steady during pulling of the switch; however, when the switch is in an unstable state, there will be different degrees of fluctuation in electric signal of its motor during pulling of the switch. Thus, the invention may be used to identify state of a switch by monitoring electric signal of a switch motor, and further take different measures based on different states of the switch. With these measures, accidents due to switch failure may be effectively reduced, and train delay time may also be reduced through proper line management.

Switch monitoring and railway line management

A method of querying spatial events in a vehicle network includes receiving, by a processing device, a query condition of a user; in response to reception of the query condition of the user, determining context information of a position where the user locates; and according to the query condition of the user and the context information of the position where the user locates, querying an index table recording correspondence between terminal nodes of roads in a road map and spatial events to obtain spatial events meeting the query condition of the user.

Querying spatial events in a vehicle network, and optimized querier

The present invention provides a radio frequency identification tag gripper device, the technical scheme including: a first gripper portion; a second gripper portion, which generates a gripping force together with the first gripper portion; a radio frequency identification tag, a circuit portion of which is divided into at least a first section and a second section, an upper surface of the first section and a lower surface of the second section being coated with strong glue, wherein the upper surface of the first section is used to bond with a grip surface of the first gripper portion when gripped tightly, and the lower surface of the second section is used to produce a coupling force with a surface of the gripped object when gripped tightly. Utilizing the technical solution of the present invention, it is possible to further improve the security of monitoring of the radio frequency identification tag.

Radio frequency identification tag gripper device

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Beijing, China

Xi Sun