Abstract: Disclosed is a method of high-precision 3D reconstruction of existing railway track lines based on UAV multi-view images, including: acquiring initial data, acquiring a UAV image rail top centerline, calculating a rail top centerline based on a nonlinear least squares method, and calculating three-dimensional coordinates of the rail centerline. Based on the multi-view geometry principle in computer vision and photogrammetry, object space coordinates of the line can be directly calculated by using image information, which does not require outdoor workers to work online and can effectively improve the safety of railway operation line surveying and mapping. Therefore, this method has important engineering application value and application prospect.

Abstract: A method for determining a full-charge capacity of a battery pack includes: obtaining first state of charge values of cells at a first state of charge correction moment; calculating a net cumulative charge capacity from the first state of charge correction moment to a full-charge moment; obtaining a voltage-capacity curve of a fully charged cell from start of a charge termination phase to the full-charge moment; obtaining a second voltage of a not fully charged cell at the full-charge moment; obtaining a capacity difference between the not fully charged cell at the full-charge moment and the not fully charged cell at the first full-charge voltage; calculating a state of charge difference; calculating a second state of charge value of the not fully charged cell at the full-charge moment; obtaining state of charge variations; calculating full-charge capacities; and obtaining a full-charge capacity based on the calculated full-charge capacities.

Abstract: A conference minutes generation method is provided, which relates to the technical field of natural language processing. The conference minutes generation method comprises: acquiring a text conference record; dividing the text conference record into a plurality of conference paragraphs, generating a conference paragraph summary for each conference paragraph, and generating a conference record summary based on the conference paragraph summary of each conference paragraph; extracting conference instructions based on the text conference record; and generating the conference minutes based on the conference record summary and the conference instructions.

Abstract: A dual camera assembly, an electronic apparatus and a method of acquiring an image are provided. The dual camera assembly includes: a first camera lens and a second camera lens; a first sensor configured for receiving light that has passed through the first camera lens; a liquid crystal light valve and a polarizer which are on a side, which is close to the first camera lens, of the first sensor. The polarizer is on a side, which is close to the first sensor, of the liquid crystal light valve, and liquid crystal molecules in the liquid crystal light valve are rotatable.

Abstract: A conference minutes generation method is provided, which relates to the technical field of natural language processing. The conference minutes generation method comprises: acquiring a text conference record; dividing the text conference record into a plurality of conference paragraphs, generating a conference paragraph summary for each conference paragraph, and generating a conference record summary based on the conference paragraph summary of each conference paragraph; extracting conference instructions based on the text conference record; and generating the conference minutes based on the conference record summary and the conference instructions.

Abstract: A computer-implemented conference reservation method is provided, which relate to the field of natural language processing. The method comprises: receiving a conference reservation request that is initiated by a conference organizer to reserve a conference, the conference reservation request being a text input or a speech input from the conference organizer; parsing, by means of a dialog understanding technology, the conference reservation request to obtain predefined elements of the conference, the predefined elements comprising a list of participants; determining, according to a pre-recorded schedule of the participants, a period of time during which all the participants are idle as a conferencing time; generating a conference invitation message, the conference invitation message specifying the conferencing time; and sending the conference invitation message to the participants.

Abstract: This disclosure relates to an image recognition method: receiving, by a data center, a first feature value sent by a first edge station, where the data center communicates with the first edge station through a network, and the first feature value is obtained by the first edge station by preprocessing a first image obtained by the first edge station; determining a first attribute based on the first feature value; sending a first label to an edge station in an edge station set, where the first label includes a target feature value and the first attribute, the target feature value is a feature value associated with the first attribute, and the edge station set includes the first edge station; receiving at least one image recognition result sent by the edge station in the edge station set; and, determining a location of a target object based on the image recognition result.

Abstract: A dual camera assembly, an electronic apparatus and a method of acquiring an image are provided. The dual camera assembly includes: a first camera lens and a second camera lens; a first layer configured for receiving light that has passed through the first camera lens; a liquid crystal light valve and a polarizer which are on a side, which is close to the first camera lens, of (he first sensor. The polarizer is on a side, which is close to (he first sensor, of the liquid crystal light valve, and liquid crystal molecules in the liquid crystal light valve are rotatable.

Abstract: A handheld electronic device is provided. The handheld electronic device includes a housing, wherein a universal ball structure is provided at a corner of the housing. The universal ball structure includes a groove, and a ball in the groove.

Abstract: A handheld electronic device is provided. The handheld electronic device includes a housing, wherein a universal ball structure is provided at a corner of the housing. The universal ball structure includes a groove, and a ball in the groove.

Abstract: The present invention relates to the field of micro electro mechanical system (MEMS), and particularly relates to a MEMS device of a two-dimensional (2D) air amplifier for electro spray ion focusing. It mainly includes original gas inlets, a gap structure, a wall structure and a center focusing groove in the axis of air amplifier. The feature of present invention is the double layers SU-8 mold fabricated by a micro machining method. Then the polydimethylsiloxane (PDMS) air amplifier is cast and bonded. In order to enhance the structure stiffness, PDMS is bonded with a glass supporting substrate. In the present invention, the fabrication method for the SU-8 mold and the PDMS casting and bonding processes are disclosed in detail so that the MEMS planar air amplifier ion focusing device can be fabricated by those skilled in the art. This fabrication method has advantages of simple process, low cost, small dimension size and easily implemented.

Abstract: The present invention relates to the field of micro electro mechanical system (MEMS), and particularly relates to a MEMS device of a two-dimensional (2D) air amplifier for electro spray ion focusing. It mainly includes original gas inlets, a gap structure, a wall structure and a center focusing groove in the axis of air amplifier. The feature of present invention is the double layers SU-8 mold fabricated by a micro machining method. Then the polydimethylsiloxane (PDMS) air amplifier is cast and bonded. In order to enhance the structure stiffness, PDMS is bonded with a glass supporting substrate. In the present invention, the fabrication method for the SU-8 mold and the PDMS casting and bonding processes are disclosed in detail so that the MEMS planar air amplifier ion focusing device can be fabricated by those skilled in the art. This fabrication method has advantages of simple process, low cost, small dimension size and easily implemented.

Abstract: A method for packet transmission in an MIP network is disclosed. A mobile node sends to a Home Agent (HA) a first Firewall Detection (FD) packet encapsulated with IP security (IPsec) protocol and a second FD packet encapsulated with the IPsec protocol and User Datagram Payload (UDP) protocol. The mobile node determines whether there is a firewall blocking an IPsec packet between the mobile node and the HA according to a Firewall Detection Reply (FDR) packet from the HA. If there is a firewall, packets are encapsulated with the UDP protocol and binding update and packet exchange are performed; otherwise, binding update and packet exchange are performed. A mobile node for packet transmission is also provided. Embodiments of the present invention enables the mobile node to exchange a packet with a correspondent node when there is a firewall not supporting the IPsec protocol between the mobile node and the HA.

Abstract: A method for a MIPv6 packet traversing a firewall includes: acquiring filtering information containing the home address of a Mobile Node (MN) from an MIPv6 packet initiating communication; establishing a filtering rule according to the filtering information; and filtering a sequent MIPv6 packet according to the filtering rule. A firewall according to the above method is also provided. According to the present invention, it may be guaranteed that a MIPv6 pack may reliably traverse a firewall in various cases. Moreover, in the case that an MN and a CN do not know whether there is a firewall between them and do not know the location of the firewall, the normal communication may still ensure not to be interrupted when the address of the MN changes.

Abstract: A method for packet transmission in an MIP network is disclosed. A mobile node sends to a Home Agent (HA) a first Firewall Detection (FD) packet encapsulated with IP security (IPsec) protocol and a second FD packet encapsulated with the IPsec protocol and User Datagram Payload (UDP) protocol. The mobile node determines whether there is a firewall blocking an IPsec packet between the mobile node and the HA according to a Firewall Detection Reply (FDR) packet from the HA. If there is a firewall, packets are encapsulated with the UDP protocol and binding update and packet exchange are performed; otherwise, binding update and packet exchange are performed. A mobile node for packet transmission is also provided. Embodiments of the present invention enables the mobile node to exchange a packet with a correspondent node when there is a firewall not supporting the IPsec protocol between the mobile node and the HA.