Výsledky vyhledávání - "张璇 Zhang Xuan"

Publikováno v: Acta Optica Sinica. 41:1215003

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::16fc3bc60661d6d6315477cbe53478ff
https://doi.org/10.3788/aos202141.1215003

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Enhancement Method of JPEG2000 Compression Image Based on Retinex Theory

Autor: 储昭辉 Chu Zhao-hui, 张新龙 Zhang Xin-long, 汪荣贵 Wang Rong-gui, 张璇 Zhang Xuan

Publikováno v: ACTA PHOTONICA SINICA. 41:200-204

In the process of enhancing the image compression,the traditional image enhancement method has some difficulties in the details recovery and generates blocky effect easily.A new method of JPEG2000 compressed image enhancement is proposed by applying

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e76c091fd117101732229ec8e2b441cf
https://doi.org/10.3788/gzxb20124102.0200

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The Effects of Radial and Positional Disorders on Two-dimensional Photonic Crystal Waveguides with Different Air-holes

Autor: 田慧平 Tian Huiping, 张璇 Zhang Xuan, 纪越峰 Ji Yuefeng

Publikováno v: ACTA PHOTONICA SINICA. 40:728-734

The impact of positional and radial disorders on the transmission spectrum of photonic crystal waveguides with different shapes of air-holes,including circular,square and elliptic were numerically investigated.It was found that the disorder affects t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::efbd62a288a79f3bb9db22a8ee698a24
https://doi.org/10.3788/gzxb20114005.0728

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