公开(公告)号：US20230066024A1

公开(公告)日：2023-03-02

申请号：US17897120

申请日：2022-08-26

Applicant: CITIC Dicastal CO., LTD

Inventor： Zuo XU ,  Tao TIAN ,  Ning WANG ,  Shaobing Huang ,  Lihua CHEN

IPC: G06F30/12

Abstract: A curve fitting method, apparatus and device based on a drawing tool for improving the accuracy of curve fitting. The method includes: determining a fitting area containing the original curve, in the fitting area, performing at least one sub-fitting operation on the original curve until the end condition of the curve fitting is satisfied, and generating a fitting curve corresponding to the original curve based on the fitting curve corresponding to each sub-fitting operation. This method can fit the original curve segments in the fitting area, which improves the accuracy of the obtained fitting curve.

公开(公告)号：US20230060298A1

公开(公告)日：2023-03-02

申请号：US17897121

申请日：2022-08-26

Applicant: CITIC Dicastal CO., LTD

Inventor： Zuo XU ,  Ning WANG ,  Tao TIAN ,  Xi LI ,  Lihua CHEN

IPC: G06V10/74 ,  G06V10/46 ,  G06T7/62 ,  G06F16/532

Abstract: A hub image retrieval method and a device thereof for improving the retrieval accuracy of an image containing a hub. The method includes: performing feature extraction on a hub image to be processed containing a target hub, and obtaining a hub feature to be processed containing N sub-hub features, wherein the N sub-hub features at least include information characterizing the features of a hub window of the target hub; determining similarities between candidate hub features of each candidate hub image and the hub features to be processed; and selecting a candidate hub image matching the hub image to be processed from the plurality of candidate hub images based on the determined respective similarities.