Invention Grant
- Patent Title: Methods and systems for correcting a document image
- Patent Title (中): 用于校正文档图像的方法和系统
-
Application No.: US13851056Application Date: 2013-03-26
-
Publication No.: US09317893B2Publication Date: 2016-04-19
- Inventor: Lawrence Shao-hsien Chen
- Applicant: Sharp Laboratories of America, Inc.
- Applicant Address: US WA Camas
- Assignee: Sharp Laboratories of America, Inc.
- Current Assignee: Sharp Laboratories of America, Inc.
- Current Assignee Address: US WA Camas
- Agent Kristine Elizabeth Matthews; David C. Ripma
- Main IPC: G06T3/00
- IPC: G06T3/00 ; G06K9/34 ; G06K9/36

Abstract:
Aspects of the present invention relate to methods and systems for fitting a mesh to an image of a document page and correcting a distortion in the image of the document page using the mesh. A rectangular-form mesh may be overlaid on a displayed document image. Corner points in the rectangular-form mesh may be moved to coincide with corner points of a document page in the displayed document image, and a corner-aligned mesh may be overlaid on the displayed document image. A cubic Bezier curve may be fit to the top edge of the document page, a cubic Bezier curve may be fit to the bottom edge of the document page and an edge-aligned mesh may be overlaid on the displayed image. An inverse projective transformation may be applied to the patches of the mesh to correct the distortion in the image of the document page.
Public/Granted literature
- US20140292802A1 Methods and Systems for Correcting a Document Image Public/Granted day:2014-10-02
Information query
IPC分类:
G | 物理 |
G06 | 计算;推算或计数 |
G06T | 一般的图像数据处理或产生 |
G06T3/00 | 在图像平面内的图形图像转换 |