An Improved Defogging Algorithm Combined with Edge Detection

Abstract

Abstract:

Abstract： The images restored by using the dark channel prior theory have haze edges. Therefore, a novel improved image clearness method based on dark channel prior was proposed to solve this insufficient. First, dark color image was obtained and decomposed by wavelet. Next, the smooth portion from wavelet decomposition was used as the target image, in which global atmospheric optical A and the dark channel value were calculated, and then, the edge information of target image was extracted and dilated. After that, according to the expanded binary edge image, the dark channel value in edges and that in smooth were optimized, respectively. Finally, according to the transmission map calculated using the optimized dark channel values, the fogfree image was obtained by using the physical model. The experiment results show that this method can effectively restore the fogging images and greatly reduce the time complexity brought by the soft matting algorithm.

Key words: clearness algorithm, dark channel prior, wavelet, edge detection

CLC Number:

TP 391

HUANG Darong,FANG Zhou，ZHAO Ling. An Improved Defogging Algorithm Combined with Edge Detection[J]. Journal of Shanghai Jiaotong University, 2015, 49(06): 861-867.

[1]	ZHOU Junjie, YU Jianbo. Online Measurement of Machining Tool Wear Based on Machine Vision [J]. Journal of Shanghai Jiao Tong University, 2021, 55(6): 741-749.
[2]	ZHUANG Hanyang (庄瀚洋), ZHOU Xuejun (周学军), WANG Chunxiang (王春香), QIAN Yuhan (钱宇晗). Wavelet Transform-Based High-Deﬁnition Map Construction From a Panoramic Camera [J]. J Shanghai Jiaotong Univ Sci, 2021, 26(5): 569-576.
[3]	CHEN Hao, WANG Xinjie, WANG Jiong, XI Zhanwen, NIE Weirong. Theoretical Model and Dynamic Performance of V-Shaped Electrothermal Actuator [J]. Journal of Shanghai Jiao Tong University, 2021, 55(10): 1263-1271.
[4]	BESSAAD Nassim, BAO Qilian, SUN Shuodong, DU Yuding, LIU Lin, HASSAN Mahmood Ul . Adaptive Dual Wavelet Threshold Denoising Function Combined with Allan Variance for Tuning FOG-SINS Filter [J]. Journal of Shanghai Jiao Tong University(Science), 2020, 25(4): 434-440.
[5]	LI Chunxiang,PEI Yangcongqi,YIN Xiao. Nonstationary Non-Gaussian Wind Pressure Prediction Using Hermite Combination Kernel Based EMD-WT-LSSVM [J]. Journal of Shanghai Jiaotong University, 2019, 53(10): 1249-1258.
[6]	LIU Bin (刘彬), LIU Tingzhang (刘廷章), MENG Fanqin (孟凡芹). Research on Morlet Wavelet Based Lamb Wave Spatial Sampling Signal Optimization Method [J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(Sup. 1): 62-69.
[7]	ZHANG Yanghao (张洋豪), ZENG Shaoning (曾少宁), ZENG Wei (曾威), GOU Jianping (苟建平). GNN-CRC: Discriminative Collaborative Representation-Based Classification via Gabor Wavelet Transformation and Nearest Neighbor [J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(5): 657-665.
[8]	LI Chunxiang,YIN Xiao. Interpolation Prediction and Extrapolation Prediction of Non-Gaussian Spatial Wind Pressure Using LSSVM with Wavelet Kernel Function [J]. Journal of Shanghai Jiaotong University, 2018, 52(11): 1516-1523.
[9]	GAO Xiaoting,YANG Dongsheng. Research on Operation Condition Monitoring Method of Intellectual Apparatus Based on Data Driven [J]. Journal of Shanghai Jiaotong University, 2017, 51(9): 1104-1110.
[10]	CUI Yan* (崔妍), CHEN Shijun (陈世均), QU Meng (瞿勐), HE Shanhong (何善红). Research and Application of New Threshold De-noising Algorithm for Monitoring Data Analysis in Nuclear Power Plant [J]. Journal of shanghai Jiaotong University (Science), 2017, 22(3): 355-360.
[11]	LI Qing1,LIANG Steven Y1,2,YANG Jianguo1. Bearing Fault Pattern Recognition Using Harmonic Wavelet Sample Entropy and Hidden Markov Model [J]. Journal of Shanghai Jiaotong University, 2016, 50(05): 723-729.
[12]	WANG Xianghong1a,1b,YIN Dong1a,HU Hongwei1a,MAO Hanling2. Separation of Weak MultiSource Fault Acoustic Emission Signals Based on Wavelet Packet and Independent Component Analysis [J]. Journal of Shanghai Jiaotong University, 2016, 50(05): 757-763.
[13]	XUE Haijian, GUO Xiaosong, ZHANG Dongfang, ZHOU Zhaofa. SINS SelfAlignment Algorithm with Inertial Frame for Swaying Base Based on Quaternion [J]. Journal of Shanghai Jiao Tong University, 2016, 50(03): 419-424.
[14]	LI Hong-kun1 (李宏坤), ZHANG Zhi-xin2* (张志新), LI Xiu-gang3 (李秀刚), REN Yuan-jie1 (任远杰). Reliability Prediction Method Based on State Space Model for Rolling Element Bearing [J]. Journal of shanghai Jiaotong University (Science), 2015, 20(3): 317-321.
[15]	ZHU Hai-jiang (祝海江). Wavelet-Based Hybrid Thresholding Method for Ultrasonic Liver Image Denoising [J]. Journal of shanghai Jiaotong University (Science), 2015, 20(2): 135-142.

An Improved Defogging Algorithm Combined with Edge Detection

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles 0

Metrics

Comments