Multiform stamp image pose correction algorithm based on perspective transformation

Feng Yin; Jiahao Pan; Jiazhi Yin

doi:10.1117/12.2681181

8 June 2023 Multiform stamp image pose correction algorithm based on perspective transformation

Feng Yin, Jiahao Pan, Jiazhi Yin

Proceedings Volume 12707, International Conference on Image, Signal Processing, and Pattern Recognition (ISPP 2023); 127074P (2023) https://doi.org/10.1117/12.2681181
Event: International Conference on Image, Signal Processing, and Pattern Recognition (ISPP 2023), 2023, Changsha, China

Abstract

The combination of perspective transformation technology and Hough transformation can achieve good image correction effect. In the application process, in order to determine the perspective transformation parameters, for the rectangular seal, the four vertices of the seal can be selected as the reference points of the transformation. However, the above method can not be directly applied to oval and circular seals. Therefore, this paper puts forward a simple and effective solution. Firstly, the minimum circumscribed frames of circular and elliptical seals are made respectively, and the vertex position coordinates are calculated. Using the constructed external frame, the above problem is transformed into the correction of a rectangular or square image, so that the perspective transformation technology can be extended to the correction of other shapes such as ellipse and circle. At the same time, BM3D filtering is used to reduce the impact of noise. In the basic estimation, K-means clustering is used to search the matching block in the neighborhood of the reference block, and the generated weight matrix is used to improve the matching degree of the module and the accuracy of subsequent aggregation. The preliminary experimental results show that the idea proposed in this paper is simple and effective, and can realize the unified correction of seal image posture of different shapes.

Citation Download Citation

Feng Yin, Jiahao Pan, and Jiazhi Yin "Multiform stamp image pose correction algorithm based on perspective transformation", Proc. SPIE 12707, International Conference on Image, Signal Processing, and Pattern Recognition (ISPP 2023), 127074P (8 June 2023); https://doi.org/10.1117/12.2681181

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Distortion

Denoising

Image processing

Matrices

Tunable filters

Detection and tracking algorithms

Image filtering

Show All Keywords

Keywords/Phrases

Search In:

Publication Years