42results about How to "Improve selection quality" patented technology

The invention discloses a video frame information labeling method and device, equipment and a storage medium. The method comprises the steps of obtaining a to-be-processed video; for a target video frame in the to-be-processed video, performing feature extraction on the target video frame to obtain a target image feature of the target video frame; according to the image feature matching degree ofthe target video frame and the marked video frame in the to-be-processed video, obtaining a to-be-processed video, determining a guide video frame of the target video frame from the labeled video frames, the guide video frame being used for guiding the target video frame to perform information labeling, and the image feature matching degree being a matching degree between the target image featureand an image feature corresponding to the labeled video frame; and generating target annotation information corresponding to the target video frame according to the annotation information corresponding to the guide video frame. According to the embodiment of the invention, by improving the selection quality of the guide video frame, the accuracy of the generated annotation information is improved.Propagation errors of the annotation information cannot be accumulated, so that the propagation quality of the annotation information is improved.

The invention relates to a method and system for invalidating sensor measurements after a sorting action on a target area of a robot sorting system. In the method there are obtained sensor measurements using sensors from a target area. A first image is captured of the target area using a sensor over the target area. A first sorting action is performed in the target area using a robot arm based on the sensor measurements and the first image. Thereupon, a second image of the target area is captured using a sensor over the target area. The first and the second images are compared to determine invalid areas in the target area. The invalid areas are avoided in future sorting actions based on the sensor measurements.

A device and a method are described for the optical selection of components of at least one fraction from a bulk material stream conveyed along a conveyance direction, having a camera unit, whose camera viewing direction is oriented toward the bulk material stream, a background, situated in the camera viewing direction behind the bulk material stream, whose color is adaptable to the color of a selected fraction of components of the bulk material stream, an analysis and control unit, connected to the camera unit, in which control commands for a separation unit, which is capable of separating the components to be selected out of the bulk material stream upon activation, may be generated according to a decision criterion.

The invention discloses a DS adaptive selection method in InSAR time series analysis based on land type. In the process of DS adaptive selection in InSAR time series analysis, homogeneous pixels on time series SAR images are identified based on land type, and then selected DS candidate points; the land type is land cover type or land use type; then, according to different land types, adaptively calculate the DS selection threshold under different land types; and then perform adaptive selection of DS based on land type. Adopting the technical solution for adaptive selection of DS targets for InSAR time-series analysis based on land types provided by the present invention can improve the quality of adaptively selected DSs; narrow the inspection search range, improve the recognition efficiency of homogeneous pixels, and further improve the efficiency of DS selection .

The present invention relates to a method for the real-time selection of key frames when mining wireless distributed video coding, including the steps: constructing an incremental curve of inter-frame features: acquiring a video sequence, and extracting the global and local features of the images; using the colour features of the images as an indicator to measure the global features of the images; using feature points as local features of the images; and on the basis of the global features and the local features of the images, calculating the overall feature similarity of the images; on the basis of the overall feature similarity of the images, constructing an incremental curve of the inter-frame feature differences: using the frame number as the abscissa and the cumulative value of the inter-frame overall feature similarity of the images as the ordinate, plotting an incremental curve of the inter-frame feature differences of the images; and after obtaining the incremental curve of the inter-frame feature differences, using a key frame real-time selection algorithm to implement rapid adaptive selection of key frames. The present invention enables the rapid and low-complexity reflection of dynamic changes in monitored image content, effectively solving the problem of real-time selection of key frames when mining wireless distributed video coding.

The invention discloses a mine emergency rescue wireless mesh network routing method based on cross-layer link state feedback. The method comprises the steps as follows: a backbone route node selects link information with the highest transmission success rate for maintaining and updating a route list according to backbone link state information between an MAC (media access control) layer and other backbone route nodes. Further, each wireless Mesh terminal maintains an adjacent backbone route node list and records backbone route nodes in a communication range of the terminal; and when information is required to be uploaded to a gateway, if no effective routing information is found, an adjacent backbone route node list is first inquired, and a backbone route node has a best transmission state with the gateway is taken as a next node communicated with the gateway.

The invention discloses a rail transit escalator data mining method based on life cycle data management, which comprises the following steps: S1, establishing an escalator equipment selection database, an engineering design database and an operation and maintenance database, wherein the equipment selection database is used to output escalator specifications; the engineering design database is used for optimizing escalator design criteria; and the operation and maintenance database is used to remind and guide the escalator maintenance, and optimize the equipment selection content with operation and maintenance data feedback; S2, guiding the engineering design with the data of equipment selection; S3, guiding operation and maintenance with engineering design data; S4, optimizing engineeringdesign content with operation bit data feedback, realizing seamless connection between equipment selection data, engineering design data, operation and maintenance data, circulating communication, and realizing data mining of the whole life cycle. Therefore, the problems of large number of escalator parts, high reliability requirements and complex faults are solved.

The invention discloses a combined ferrotitanium separator and an application method thereof and belongs to a mechanical engineering technology. The combined ferrotitanium separator comprises an upper rack, a lower base, a ferrotitanium sorting device arranged in the upper rack, a medium titanium sorting device and a careful selecting device, wherein the medium titanium sorting device and the careful selecting device are located in the lower base and are ranged side by side on the lower portion of the ferrotitanium sorting device, the ferrotitanium sorting device comprises a hopper, a first motor, a ferrotitanium segregator, a iron mine chute and a titanium middling chute, the medium titanium sorting device comprises a third motor, a medium titanium segregator, an iron chute and a middling tank, and the careful selecting device comprises a second motor, a titanium selecting device, a titanium ore tank, a middling tank and a tailing ore tank. According to the combined ferrotitanium separator and the application method thereof, the structure is simple, the occupied space is small, and the operation and maintenance are convenient, by means of the arrangement of the ferrotitanium sorting device, the medium titanium sorting device and the careful selecting device, ferrotitanium separation processes and titanium selecting processes are integrated to be completed in one machine, and the select quality of the titanium is improved, besides, the mineral utilization rate is improved, and thereby the economic benefits are improved.