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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9524539 B1

PDFFull Text
Date of Patent:
Dec. 20, 2016

Filed:

Aug. 20, 2015

Method for edge-directed adaptive image interpolation and vlsi implementation device for the same

Applicant:

Xi'an Jiaotong University, Xi'an, CN;

Inventors:

Hongbin Sun, Xi'an, CN;

Qiubo Chen, Xi'an, CN;

Xuchong Zhang, Xi'an, CN;

Jie Yang, Xi'an, CN;

Jizhong Zhao, Xi'an, CN;

Nanning Zheng, Xi'an, CN;

Assignee:

XI'AN JIAOTONG UNIVERSITY, Shaanxi, CN;

Attorney:

J.C. Patents

Primary Examiner:

Abolfazl Tabatabai

Int. Cl.
CPC ...
G06K 9/32 (2006.01); G06T 3/40 (2006.01); G06T 7/00 (2006.01); H04N 5/14 (2006.01);
U.S. Cl.
CPC ...
G06T 3/403 (2013.01); G06T 3/4007 (2013.01); G06T 7/0085 (2013.01); G06T 2207/20008 (2013.01); G06T 2207/20024 (2013.01); G06T 2207/20148 (2013.01); G06T 2207/20192 (2013.01);
Abstract

Disclosed is a method for edge-directed adaptive image interpolation and a VLSI implementation device thereof. The method comprises: computing gradient magnitude and gradient direction of source image, obtaining edge information by comparing gradient magnitude and local adaptive threshold value, edge direction is vertical direction of the gradient direction; classifying edge direction, and filtering using edge information, so that an image is divided into regular edge region and non-edge region. Regular edge region interpolation is conducted along edge direction, methods of improved bicubic interpolation, parallelogram bicubic interpolation and parallelogram bilinear interpolation based on local gradient information are adopted according to classification of edge information; non-edge region image interpolation is conducted by adopting improved bicubic interpolation method based on local gradient information. The device of the present invention comprises edge information extracting module, adaptive interpolation module, input line field synchronous control module and scaling line field synchronous control module.

Find Patent Forward Citations

Sun, Hongbin. (2016). Method for edge-directed adaptive image interpolation and vlsi implementation device for the same (U.S. Patent No. 9524539). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9524539

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