|Table of Contents|

[1] Chen Wenwu, Shao Xinxing, He Xiaoyuan,. Data compression of displacement fields in digital imagecorrelation by non-integer quantization [J]. Journal of Southeast University (English Edition), 2022, 38 (1): 42-48. [doi:10.3969/j.issn.1003-7985.2022.01.007]
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Data compression of displacement fields in digital imagecorrelation by non-integer quantization()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
38
Issue:
2022 1
Page:
42-48
Research Field:
Image Processing
Publishing date:
2022-03-20

Info

Title:
Data compression of displacement fields in digital imagecorrelation by non-integer quantization
Author(s):
Chen Wenwu;  Shao Xinxing;  He Xiaoyuan
School of Civil Engineering, Southeast University, Nanjing 211189, China
Keywords:
digital image correlation;  wireless transmission;  displacement field;  compression encoding
PACS:
TP751.1
DOI:
10.3969/j.issn.1003-7985.2022.01.007
Abstract:
To solve the real-time transmission problem of displacement fields in digital image correlation, two compression coding algorithms based on a discrete cosine transform(DCT)and discrete wavelet transform(DWT)are proposed. Based on the Joint Photographic Experts Group(JPEG)and JPEG 2000 standards, new non-integer and integer quantizations are proposed in the quantization procedure of compression algorithms. Displacement fields from real experiments were used to evaluate the compression ratio and computational time of the algorithm. The results show that the compression ratios of the DCT-based algorithm are mostly below 10%, which are much less than that of the DWT-based algorithm, and the computational speed is also significantly higher than that of the latter. These findings prove the algorithm’s effectiveness in real-time displacement field wireless transmission.

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Memo

Memo:
Biographies: Chen Wenwu(1996—), male, graduate; Shao Xinxing(corresponding author), male, doctor, lecturer, Xinxing.shao@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.11827801, 11902074).
Citation: Chen Wenwu, Shao Xinxing, He Xiaoyuan.Data compression of displacement fields in digital image correlation by non-integer quantization[J].Journal of Southeast University(English Edition), 2022, 38(1):42-48.DOI:10.3969/j.issn.1003-7985.2022.01.007.
Last Update: 2022-03-20