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

Video frame information labeling method and device, equipment and storage medium

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.
Owner:TENCENT TECH (SHENZHEN) CO LTD

Novel agricultural seed selection device improving seed selection quality

The invention discloses a novel agricultural seed selection device improving the seed selection quality. The novel agricultural seed selection device improving the seed selection quality comprises a seed selection device body; an air blower is installed above the left side in the seed selection device body and electrically connected with a control device through a wire; a first screening bin is arranged on the upper portion in the seed selection device body; a first discharging port is formed in the right end of the first screening bin; a second screening bin is arranged on the lower portion in the seed selection device body; a second discharging port is formed in the right end of the second screening bin; a screening device is installed between the first screening bin and the second screening bin; a feeding port is formed in the middle of the upper portion of the seed selection device body; and an electromagnetic mass sensor is installed below the feeding port. The novel agricultural seed selection device improving the seed selection quality has the beneficial effects of being reasonable in structural design, easy to operate, high in seed selection quality, safe, practical and the like; and meanwhile, the seed selection rate can be substantially increased, and the novel agricultural seed selection device improving the seed selection quality can be widely used and popularized.
Owner:王星竹

Combined ferrotitanium separator and application method thereof

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.
Owner:PANZHIHUA CHANGSEN IND & TRADE CO LTD

Real-time Key Frame Selection Method in Mine Wireless Distributed Video Coding

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.
Owner:CHINA UNIV OF MINING & TECH

Combined ferrotitanium separator and application method thereof

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.
Owner:PANZHIHUA CHANGSEN IND & TRADE CO LTD
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