公开(公告)号：US20230360418A1

公开(公告)日：2023-11-09

申请号：US17414551

申请日：2021-05-28

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Zechao LI ,  Jinhui TANG ,  Huang LI

IPC: G06V30/146 ,  G06V30/148 ,  G06V20/62 ,  G06V30/18

CPC classification number: G06V30/1463 ,  G06V30/153 ,  G06V20/62 ,  G06V30/1801

Abstract: The present disclosure discloses a character offset detection method and system. The method includes: acquiring a text image; performing character separation based on the text image to obtain a character text region; calculating a center point of each rectangular box in the character text region to obtain a center point set; determining an optimal fitted curve based on the center point set; and analyzing character offset based on the optimal fitted curve to obtain an offset result. The present disclosure realizes detection of the character offset based on curve fitting, so that the accuracy of detection is improved.

公开(公告)号：US20220092751A1

公开(公告)日：2022-03-24

申请号：US17422455

申请日：2020-01-02

Applicant: Nanjing University of Science and Technology

Inventor： Longquan DAI ,  Jingru WANG ,  Jinhui TANG

IPC: G06T5/20 ,  G06F17/16 ,  G06F17/12 ,  G06T5/00

Abstract: The present invention provides an efficient hardware guided filtering method for use in solving a multi-label problem. The method includes the following steps: inputting an input guidance of a multi-label image; defining an efficient hardware guided filtering (HGF) model; calculating a vector by a customized matrix inversion operation; inputting guidance through a mapping program for adding up result of each channel to form a polynomial guidance, and introducing nonlinearity into the linear model; and obtaining a filtering result in an efficient hardware mode by element-wise calculation and box filtering.