Abstract: Disclosed is a method and apparatus for adjusting a playing speed of a video. The method for adjusting a playing speed of a video includes: after detecting a playing speed adjustment instruction of a target video, determining a target playing speed corresponding to the playing speed adjustment instruction; determining an initial frame rate of the target video, and taking the product of the initial frame rate and the target playing speed as a target parameter of the target video; processing the target video based on a preset frame number adjustment rule corresponding to a target comparison relationship; and adjusting timestamps of video frames contained in the processed target video, based on the preset target frame rate, so that the adjusted target video is played in the preset target frame rate.

Abstract: The present disclosure provides a data storage method, belonging to the field of data processing. The method is applied to a storage server in a cloud storage system. The method includes: monitoring data transmission status of a data acquisition device; obtaining data exception information according to the monitored data transmission exceptional status; transmitting a first data backhaul request to the data acquisition device, the data acquisition device being configured to return first data acquired within the exception time period upon receiving the first data backhaul request; and storing the first data upon receiving the first data.

Abstract: Embodiments of the present application disclose a data writing and apparatus, a data reading method and apparatus, and a distributed object storage cluster. The data writing method includes: receiving to-be-written data sent by a client in a distributed object storage cluster (S101), and dividing the to-be-written data into a plurality of pieces of sub-data and determining a sequence number of each piece of sub-data (S102); and writing each piece of sub-data into a corresponding network hard disk (S103); for each piece of sub-data, sends a correspondence between the sequence number of the piece of sub-data and identification information of a network hard disk into which the piece of sub-data is written to the metadata server in the distributed object storage cluster (S104). Each of pieces of sub-data into which the to-be-written data is divided is written into a corresponding network hard disk.

Abstract: A method and an apparatus for storing, reading, and displaying a plurality of multimedia files are disclosed.

Abstract: A depth measuring method and system applicable to a first binocular camera having a zoom lens is provided.

Abstract: Embodiments of the present application provide an anti-counterfeiting face detection method, device and multi-lens camera, wherein the anti-counterfeiting face detection method comprises: acquiring a depth image, an infrared image and an RGB image by using a TOF camera and an RGB camera; analyzing the RGB image through a preset face detection algorithm to determine an RGB face region of a face in the RGB image and position information of the RGB face region; determining a depth face region of the face in the depth image and an infrared face region of the face in the infrared image based on the position information of the RGB face region; determining that the face passes the detection when the depth face region, the infrared face region and the RGB face region meet corresponding preset rules respectively.

Abstract: A deep neural network operation method and apparatus are provided. The method comprises: obtaining an input feature map of a network layer; displacing respectively, according to a preset displacement parameter, each of channels of the input feature map of the network layer along axes, to obtain a displaced feature map, wherein the preset displacement parameter comprises displacement amounts of the channel in the axes; and performing convolution operation on the displaced feature map with a 1×1 convolution kernel to obtain an output feature map of the network layer. The operation efficiency of the DNN can be improved through the above method.

Abstract: Embodiment of the present application provides a method and an apparatus for calculating a luminance value of a region of interest.

Abstract: A method and apparatus for video playing, an electronic device and a storage medium are provided. In the method, a web service program calls a preset interface to create a video window; the video window is displayed in a page in which the current window of a browser is located; a video playing instruction is received; and a video corresponding to the video playing instruction is played in the video window. In the present application, a video window is created through a web service program; the created video window is displayed in the page in which the current window of the browser is located, and then the video is played through the video window. In this way, the video may be played without loading a plug-in, achieving the purpose of playing a video on a page of a browser without using a plug-in.

Abstract: Disclosed is a statistical method, apparatus and device for customer flow. The method includes: acquiring video data on which the statistics is to be made (S101), identifying facial areas in the video data (S102), matching the identified facial areas with pre-set facial information, wherein the pre-set facial information may be facial information of a person unrelated to the customer flow (for example, a staff, etc.); determining the number of successfully matched facial areas, to obtain the customer flow without unrelated persons (S103). It can be seen that the method removes the interference from unrelated persons and improves the accuracy of customer flow statistics.

Abstract: A method of transmitting data, composing: transmitting a plurality of first Real-time Transport Protocol (RTP) data packets to a receiving end over an RTP data link established with the receiving end; receiving a retransmission indication message sent by the receiving end, the retransmission indication message being intended to indicate an RTP data packet to be retransmitted among the plurality of first RTP data packets; encapsulating the RTP data packet to be retransmitted according to the retransmission indication message to obtain a second RTP data packet, wherein the second RTP data packet composes an RTP padding field intended to indicate that the second RTP data packet is a retransmitted RTP data packet, and a type flag of the second RTP data packet is same as a type flag of the first RTP data packet and transmitting the second RTP data packet to the receiving end over the RTP data link.

Abstract: The present application discloses a task allocation method and task allocation apparatus for distributed data computing. The task allocation method includes: receiving storage parameters for target data to be computed in distributed data; mapping data slices of the target data to a resilient distributed dataset based on the storage parameters, each data slice corresponding respectively to a partition in the resilient distributed dataset; assigning each partition to a storage node to generate a computing task and perform the computing tasks. By using data storage information in a distributed database to allocate computing tasks to storage nodes corresponding to the data, Only data in local memories need to be called during the computing process, IO redundancy and time consumed due to repeated data forwarding are reduced.

Abstract: A method and an apparatus for updating data for a distributed database system are disclosed.

Abstract: An image capture device, a control method and a machine readable storage medium are disclosed. The image capture device includes: a processor, an infrared lamp, and a white light lamp. The processor in the image capture device is used to control the infrared lamp and white light lamp. The processor obtains current acquisition parameters of the image capture device, compares the magnification in the current acquisition parameters with a preset first magnification threshold and a preset second magnification threshold to obtain a comparison result, and controls switching states of the infrared lamp and the white light lamp according to the comparison result, the brightness of the environment and the gain, wherein, the first magnification threshold is less than the second magnification threshold.

Abstract: The present application relates to the field of security and protection, and provides a pan-tilt control method, device and system. The method comprises: detecting whether there is a signal source within a monitored region of a pan-tilt camera, the pan-tilt camera comprising a pan-tilt and a camera attached to the pan-tilt; judging, when there is a signal source within the monitored region, whether signals emitted from the signal source are position adjusting signals for indicating a position adjustment on the pan-tilt; and adjusting a position of the pan-tilt according to a position of the signal source when the signals emitted from the signal source are position adjusting signals. In the present application, the trigger delay of the control operation on the pan-tilt camera is reduced.

Abstract: The present application discloses a method and an apparatus for displaying an image based on privacy masking, which belong to the field of video monitoring. The method includes: acquiring a to-be-masked original image provided by an image capture terminal and privacy masking area information of the original image; wherein, the privacy masking area information is obtained by identifying the original image or is obtained from the image capture terminal and indicates an area in the original image which is required to be masked; determining whether the original image is required to be privacy-masked based on whether privacy unmasking permission information is stored; if the original image is required to be privacy-masked, performing privacy-masking on the original image based on the privacy masking area information to obtain a masked image, and displaying the masked image.

Abstract: Embodiments of the present application provide a method, apparatus, device and system for calibrating parameters of a camera. In this solution, a camera performs image capturing on multiple checkerboard targets to obtain a calibration image, in other words, the calibration image contains multiple checkerboards, and the camera parameters are solved based on the calibration image containing the multiple checkerboards. In a first aspect, the calibration image contains multiple checkerboards, so that it is not necessary to adjust the position or posture of a checkerboard target for multiple times and to capture a calibration image with respect to the checkerboard target for multiple times, thereby improving the calibration efficiency. In a second aspect, the fact of capturing a calibration image with respect to the checkerboard target for multiple times results in a relatively large error for capturing, while this error for capturing is reduced by applying this solution.

Abstract: Embodiments of the present application provide a method and apparatus for determining a trajectory of a human target. The method includes: extracting a target feature of a to-be-tracked human target in a to-be-processed image as a to-be-searched target feature; searching for an acquisition attribute corresponding to the to-be-searched target feature based on a pre-established correspondence between target features and acquisition attributes; determining a trajectory of the to-be-tracked human target based on the found acquisition attribute. It can be seen that in this solution, a face image is not required for determining a trajectory of a person. Even if the acquired face image is not clear, the accuracy of determining the trajectory of the person will not be reduced. Therefore, by the solution of the present application, the accuracy of determining the trajectory of the person is improved.

Abstract: A method for acquiring queuing information includes: acquiring a location and a height of each pixel point in a first video image in a world coordinate system, wherein the first video image is a video image captured by a video camera at a queue area; determining a behavior state of each human body at the area based on the location and the height of each pixel point; and acquiring queuing information based on the behavior state of each human body at the area at a current time.