Abstract: An audiovisual communication system includes a plurality of environment sound sources, a microphone array, an image processing device, an audio processing device and a denoise processing device. Each of the plurality of environment sound sources has an environment sound. A plurality of microphones of the microphone array receive the plurality of environment sounds and output a plurality of receiving audio signals according to the plurality of environment sounds respectively. The image processing device obtains an image including the plurality of environment sound sources and selects one of the plurality of environment sound sources in the image as a target sound source according to a selection command. The image processing device calculates a relative position between the target sound source and the microphone array according to a first coordinate. The audio processing device receives the plurality of receiving audio signals and calculates a target audio signal.

Abstract: An access control device provides a secure access control mechanism for a system being remotely accessed. An embodiment of the access control device includes a front-end firewall to provide a first network port to connect a computer to remotely access the system; a bastion host connected with the front-end firewall; and a back-end firewall, connected with the bastion host, to provide a second network port to connect the system. The back-end firewall determines remotely accessible resources in the system and determines resources remotely accessible by the computer, among the remotely accessible resources in the system, according to remote access control policies. The bastion host provides the computer with information provided by the back-end firewall about the resources remotely accessible by the computer through the first network port of the front-end firewall, to permit the resources to be remotely accessible by the computer. Advantages may include security, simplicity and plug-and-play.

Abstract: A monitor method for detecting an object includes capturing an image; calculating an initial probability of the object existing in the image; applying a mask to cover a first portion of the image if the initial probability is higher than a threshold; calculating a first probability of the object existing in the image excluding the first portion; and using at least the first probability to detect the location the object in the image.

Abstract: A communication headset includes an earcup, a headband, and a microphone boom assembly. The microphone boom assembly includes a microphone boom, a gear assembly disposed on the earcup and supporting the microphone. The gear assembly enables a rotation of the microphone boom.

Abstract: Various embodiments of the teachings herein include a method for security monitoring on an OT system. The method may include: determining a time range for calculation on data of the OT system; collecting from the OT system 10, data in the determined time range on a first aspect for security monitoring; calculating, based on data collected, an indicator on the first aspect; and visualizing the indicator on the aspect in a quantitative way.

Abstract: The present disclosure relates to a monitoring method, device and system for an industrial control system and a computer-readable medium. They are used to effectively monitor the industrial control system. The method includes: obtaining first network traffic transmitted in the industrial control system in a passive monitoring manner; determining whether it is necessary to monitor the industrial control system in an active probe manner according to characteristics of industrial devices in the industrial control system in the first network traffic; and upon determining it is necessary to monitor the industrial control system in an active probe manner, determining a target industrial device according to the characteristics of the industrial devices in the industrial control system in the first network traffic, sending third network traffic to the determined target industrial device, and obtaining second network traffic sent by the target industrial device in response to the third network traffic.

Abstract: A method, device, storage medium, processor and terminal are for identifying security threats. In an embodiment, the method includes collecting a plurality of security-related security events, each security event containing a plurality of fields; for a first security event of the plurality of security events, searching one or more second security events related to the first security event from the plurality of security events according to one or more fields of the plurality of fields of the first security event, one or more second security events and the first security event forming event graphs; calculating the weights of the event graphs; and sorting the event graphs according to the weights.

Abstract: An audiovisual communication system includes a plurality of environment sound sources, a microphone array, an image processing device, an audio processing device and a denoise processing device. Each of the plurality of environment sound sources has an environment sound. A plurality of microphones of the microphone array receive the plurality of environment sounds and output a plurality of receiving audio signals according to the plurality of environment sounds respectively. The image processing device obtains an image including the plurality of environment sound sources and selects one of the plurality of environment sound sources in the image as a target sound source according to a selection command. The image processing device calculates a relative position between the target sound source and the microphone array according to a first coordinate. The audio processing device receives the plurality of receiving audio signals and calculates a target audio signal.

Abstract: A method for decolorization of polyester fabrics is provided. The method for decolorization of polyester fabrics includes putting polyester fabrics into an extraction cell. The method for decolorization of polyester fabrics also includes making a supercritical fluid and a co-solvent flow into the extraction cell. The method for decolorization of polyester fabrics further includes adjusting the temperature in the extraction cell to be greater than or equal to the glass transition temperature of the polyester fabrics, so that the supercritical fluid and the co-solvent perform a decolorization reaction on the polyester fabrics. Moreover, the method for decolorization of polyester fabrics includes making the supercritical fluid and the co-solvent flow out of the extraction cell. The method for decolorization of polyester fabrics also includes taking the polyester fabrics out of the extraction cell.

Abstract: Various embodiments include a method for security management at a scanning system installed outside a monitored system. The method comprises: acquiring first information for identification of a mobile storage device; generating third information to indicate current status of files on the mobile storage device; and sending the first information and the third information to a monitoring system to check if usage of the mobile storage device in the monitored system is secure.

Abstract: A monitoring device and an operation method thereof are provided to detect whether an object of interest appears in a video stream. The monitoring device includes a motion calculation circuit, a motion region determination circuit and a computing engine. The motion calculation circuit performs motion calculation on a current frame in the video stream to generate a motion map. The motion region determination circuit determines a motion region in the current frame according to the motion map. The motion region determination circuit notifies the computing engine with the motion region in the current frame. The computing engine performs an object of interest detection on the motion region in the current frame of the video stream to generate a detection result. The motion region determination circuit determines whether to ignore the motion region in a subsequent frame after the current frame according to the detection result.

Abstract: A monitor method for detecting an object includes capturing an image; calculating an initial probability of the object existing in the image; applying a mask to cover a first portion of the image if the initial probability is higher than a threshold; calculating a first probability of the object existing in the image excluding the first portion; and using at least the first probability to detect the location the object in the image.

Abstract: A monitoring device and an operation method thereof are provided to detect whether an object of interest appears in a video stream. The monitoring device includes a motion calculation circuit, a motion region determination circuit and a computing engine. The motion calculation circuit performs motion calculation on a current frame in the video stream to generate a motion map. The motion region determination circuit determines a motion region in the current frame according to the motion map. The motion region determination circuit notifies the computing engine with the motion region in the current frame. The computing engine performs an object of interest detection on the motion region in the current frame of the video stream to generate a detection result. The motion region determination circuit determines whether to ignore the motion region in a subsequent frame after the current frame according to the detection result.