381results about How to "Solve the problem of selectivity" patented technology

The invention provides a video perception-fused multi-task synergetic recognition method and system, and belongs to the technical field of multisource heterogeneous video data processing and recognition. According to the method and system, a biological vision perception mechanism is combined to research feature-synergetic shared semantic descriptions of multisource heterogeneous video data and universal feature descriptions of the multisource heterogeneous video data are obtained; an environment-suitable calculation theory is utilized to establish task-synergetic feature association learning and task prediction mechanism and realize an environment-suitable perception task association prediction mechanism; and long-time dependency is combined to put forward a context-synergetic vision multi-task deep synergetic recognition mode, realize a multi-task deep synergetic recognition model with long-time memory and solve the problem that the video multi-task recognition is bad in generalization, low in robustness and high in calculation complexity. According to the method and system, an intelligent, generalized and mobile video common feature description method and the multi-task deep synergetic recognition model are put forward, so that the development in the field of intelligent information push and personalized control services of smart city multisource heterogeneous video data canbe prompted.

The invention discloses a light single sideband modulation method. According to the light single sideband modulation method, a light carrier wave is divided into two routes, with regard to one route of the two routes, light intensity modulation of a suppressed even order sideband is conducted at first, then one first-order sideband signal is filtered out from obtained light intensity modulation signals, and finally the one first-order sideband signal which is filtered out is merged with the other route light carrier wave to enable a final light sideband modulation signal to be obtained. The invention further discloses a light single side band modulator, optical device measuring equipment and an optical device measuring method, wherein the light single side band modulator, the optical device measuring equipment and the optical device measuring method adopt the modulation method. The light single sideband modulation method can effectively eliminate influence of second-order sideband of the single sideband signal so as to improve dynamic range of a system. The optical device measuring equipment and the optical device measuring method based on the modulation method can solve the problem of selection of an optical device to be tested and the problem of measuring error caused by the second-order sideband of the sideband signal under the condition of guaranteeing measurement accuracy.

The invention relates to a frame-type circuit breaker fault diagnosis and degree evaluation method based on operating accessory current. The method includes the steps of firstly determining the working stages, including an energy storage stage, a closing stage and an opening stage, of the circuit breaker to be diagnosed and evaluated, then using the current of an energy storage motor to diagnose fault during the energy storage stage, and using the current of a closing coil to diagnose fault during the closing stage, using the current of the opening coil to diagnose fault and assess degree during the opening stage, respectively detecting the current signals of the energy storage motor during the energy storage stage, the current signals of the closing coil to diagnose fault during the closing stage and the current signals of the opening coil during the opening stage, conducting fault diagnosis with a multi-core support vector machine, and accurately determining the fault degree through a fault degree characteristic curve when the degree of the fault diagnosed has to evaluated.

The invention discloses a method for transmitting scalable videos according to priorities. The method comprises the following steps of: sequencing layered code streams which are subjected to scalable video coding (SVC) of each group of pictures (GOP) of the scalable videos based on priorities; and performing packing and Raptor coding on the sequenced SVC layered code streams and transmitting coded scalable video code streams to a scalable video receiving end through a transmission channel. The invention also discloses a device for transmitting scalable videos based on priorities. In the method, the SVC layered code streams are sequenced on the basis of priorities according to the layer characteristic of the SVC layered code streams, and packing and Raptor coding are performed on the sequenced SVC layered code streams, so that the problems of optimized selection and transmission of scalable video code streams are solved and the quality of a reconstructed image of the scalable video code streams can be finally enhanced.

The embodiment of the invention provides a method and device for measuring and reporting receiving signals intensity indication in the authorization auxiliary access, and a method and device for using RSSI in the authorization auxiliary access. The method for measuring and reporting RSSI in the authorization auxiliary access comprises: determining whether the indication of the channel occupation state is received from a base station or not; measuring the RSSI; and reporting the measured RSSI to the base station. The RSSI measurement and report mechanism provided by the embodiment of the invention can keep low signaling cost.

The invention provides an all-pass balanced time-reversal ultra-wideband wireless communication method used for restraining the coherent multi-path effect in the UWB wireless communication system, improving the transmission performance of the communication system and belonging to the wireless communication technical field. The shock response Hc (omega) =|Hc(omega)| *e j theta (omega) the wireless channel is measured firstly; and then the all-pass balanced factor H2 (omega) =1 / |Hc(omega)|2 and the time-reversal factor H1(omega) =|Hc(omega)| *e -j theta (omega) of the wireless channel are constructed respectively; finally, the all-pass balanced factor H2 (omega) and the time-reversal factor H1 (omega) are used for the all-pass balanced time-reversal processing towards the wireless channel, enabling the transmission function of the wireless channel after the all-pass balanced time-reversal processing to be Hc`(omega)=H2(omega)*H1(omega)* Hc(omega)=1. The invention adopts the all-pass balanced factor H2 (omega) =1 / |Hc(omega)|2 to process all-pass balancing towards the time-reversal wireless channel, enables the wireless channel processed by the all-pass balanced time-reversal processing to be equivalent to an all-pass channel and eliminates the coherent multi-path effect (frequency selective fading). The all-pass balanced time-reversal ultra-wideband wireless communication method has the advantages of simple operation, lower computation cost and being applicable to the wireless communications with different communication systems.