{"title":"使用离散余弦变换和条件生成对抗网络的微光图像恢复","authors":"Banglian Xu, Yao Fang, Zhixiang Bian, Yu Huang, Yaoyao Tan, Xue, Cheng, Jiale Song, Leihong Zhang","doi":"10.3116/16091833/22/4/225/2021","DOIUrl":null,"url":null,"abstract":". In the process of low-light imaging, some part of useful information of an image is overwhelmed by a noise. When interference is large, the signal-to-noise ratio (SNR) detected in a system is reduced to a very low level. We study the low-light imaging under condition when the detection SNR is equal to 1 dB. Taking into account that the noise is often located in the high-frequency spectral part, we use discrete cosine transform (DCT) to remove the noise or, at least, filter out its some part. Then we use an algorithm of conditional generative adversarial network (CGAN) to improve the image quality. The simulation results testify that the DCT and CGAN algorithms combined together improve significantly the restoration results and the final quality of images. The latter is high enough, with the average peak SNR being higher than 22 dB and the structural similarity index measure amounting to about 0.8.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Low-light image restoration using discrete cosine transform and conditional generative adversarial network\",\"authors\":\"Banglian Xu, Yao Fang, Zhixiang Bian, Yu Huang, Yaoyao Tan, Xue, Cheng, Jiale Song, Leihong Zhang\",\"doi\":\"10.3116/16091833/22/4/225/2021\",\"DOIUrl\":null,\"url\":null,\"abstract\":\". In the process of low-light imaging, some part of useful information of an image is overwhelmed by a noise. When interference is large, the signal-to-noise ratio (SNR) detected in a system is reduced to a very low level. We study the low-light imaging under condition when the detection SNR is equal to 1 dB. Taking into account that the noise is often located in the high-frequency spectral part, we use discrete cosine transform (DCT) to remove the noise or, at least, filter out its some part. Then we use an algorithm of conditional generative adversarial network (CGAN) to improve the image quality. The simulation results testify that the DCT and CGAN algorithms combined together improve significantly the restoration results and the final quality of images. The latter is high enough, with the average peak SNR being higher than 22 dB and the structural similarity index measure amounting to about 0.8.\",\"PeriodicalId\":23397,\"journal\":{\"name\":\"Ukrainian Journal of Physical Optics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2021-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ukrainian Journal of Physical Optics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.3116/16091833/22/4/225/2021\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"0\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ukrainian Journal of Physical Optics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.3116/16091833/22/4/225/2021","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"OPTICS","Score":null,"Total":0}
Low-light image restoration using discrete cosine transform and conditional generative adversarial network
. In the process of low-light imaging, some part of useful information of an image is overwhelmed by a noise. When interference is large, the signal-to-noise ratio (SNR) detected in a system is reduced to a very low level. We study the low-light imaging under condition when the detection SNR is equal to 1 dB. Taking into account that the noise is often located in the high-frequency spectral part, we use discrete cosine transform (DCT) to remove the noise or, at least, filter out its some part. Then we use an algorithm of conditional generative adversarial network (CGAN) to improve the image quality. The simulation results testify that the DCT and CGAN algorithms combined together improve significantly the restoration results and the final quality of images. The latter is high enough, with the average peak SNR being higher than 22 dB and the structural similarity index measure amounting to about 0.8.
期刊介绍:
“Ukrainian Journal of Physical Optics” contains original and review articles in the fields of crystal optics, piezo-, electro-, magneto- and acoustooptics, optical properties of solids and liquids in the course of phase transitions, nonlinear optics, holography, singular optics, laser physics, spectroscopy, biooptics, physical principles of operation of optoelectronic devices and systems, which need rapid publication.
The journal was founded in 2000 by the Institute of Physical Optics of the Ministry of Education and Science of Ukraine.