3results about How to "Control accumulation" patented technology

The application provides a lithium-rich manganese-based material and a preparation method and application thereof. The chemical general formula of the lithium-rich manganese-based material is Li 1.2+x (Mn a Co b Ni c ) 0.8‑x O2, wherein, -0.2

The application belongs to the technical field of point cloud processing, and discloses a multi-modal semantic mapping method and system based on a master-slave architecture. The method comprises the following steps: S1, extracting feature points in point cloud data and calculating the covariance matrix of the neighborhood point cloud of each feature point; S2, solving the optimal pose corresponding to the minimum of the target function; S3, converting the obtained point cloud data into a world coordinate system using the optimal pose, fusing all frame point cloud data in the world coordinate system to form a three-dimensional point cloud map, projecting the three-dimensional point cloud map to a camera coordinate system, and inputting the three-dimensional point cloud map projected to the camera coordinate system into a semantic segmentation neural network to obtain the semantic label corresponding to each point cloud in the three-dimensional point cloud map, thereby achieving semantic mapping. Through the application, the problems of weak dynamic adaptability, insufficient model generalization ability and long-term running precision decay of the traditional three-dimensional semantic mapping method in a dynamic complex scene are solved.

This utility model provides a turning tool device for notched sample machining, including an indexable insert, a tool holder, and a screw. The indexable insert and the tool holder are fixedly connected by the screw. The tool holder is a CNC external turning tool straight head tool holder, with a diamond-shaped insert mounting groove at the head. A threaded hole that mates with the screw is located in the center of the insert mounting groove. The indexable insert has a central through hole coaxial with the threaded hole in the middle. The insert is replaced and fixed by screwing through the screw and screwing it into the tool holder.