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| 1 | Gradient based restoration of coal mine images obtained by underground wireless transmissions显示文摘Curvature-driven diffusion (CDD) principles were used to develop a novel gradient based image restora- tion algorithm. The algorithm fills in blocks of missing data in a wireless image after transmission through the network. When images are transmitted over fading channels, especially in the severe circum- stances of a coal mine, blocks of the image may be destroyed by the effects of noise. Instead of using com- mon retransmission query protocols the lost data is reconstructed by using the adaptive curvature-driven diffusion (ACDD) image restoration algorithm in the gradient domain of the destroyed image. Missing blocks are restored by the method in two steps: In step one, the missing blocks are filled in the gradient domain by the ACDD algorithm; in step two, and the image is reconstructed from the reformed gradients by solving a Poisson equation. The proposed method eliminates the staircase effect and accelerates the convergence rate. This is demonstrated by experimental results. | Lu Zhaolin Qian Jiansheng Li Leida | 2011 | Mining Science and Technology2011，21，6： | 2 |
| 2 | Characteristic region based watermark embedding with RST invariance and high capacity显示文摘 | Li Leida Qian Jiansheng PAN J S | 2011 | International Journal of Electronics and Com- munications2011，65，5： | 1 |
| 3 | Geometrically invariant image watermarking using Polar Harmonic Transforms显示文摘 | Leida Li Shushang Li Ajith Abraham Jeng-Shyang Pan | 2012 | Information Sciences2012，，： | 1 |
| 4 | Geometrically invariant image watermarking using Polar Harmonic Transform显示文摘 | Li Leida | 2012 | Information Science2012，199，： | 1 |
| 5 | A Novel Fingerprinting Algo- rithm with Blind Detection in DCT Domain for Images显示文摘 | Li X Guo F~jie Meng Leida Li | 2011 | lnteruational Journal of Electronics and Communications2011，65，11： | 1 |
| 6 | Image inpainting based on adaptive total variation model显示文摘 | LU Zhaolin QIAN Jiansheng LI Leida | 2011 | IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences2011，94，7： | 1 |
| 7 | Characteristic region based watermark embedding with RST Invariance and high capacity 显示文摘 | Leida Li Jiansheng Qian Jeng-shyang Pan | 2011 | International Journal of Electronics and Communications( AEU)2011，65，5： | 1 |
| 8 | Rotation invariant watermark embedding based on scale-adapted characteristic regions显示文摘 | Li Leida Yuan Xiaoping Lu Zhaolin | 2010 | Information Sciences2010，180，15： | 1 |
| 9 | Localized image watermarking in spatial domain resistant to geometric attacks显示文摘 | Li Leida Guo Baolong | 2009 | Intemational Journal of Electronics and Communications2009，63，2： | 1 |
| 10 | Localized image watermarking in spatial do-main resistant to geometric attacks显示文摘 | Li Leida Guo Baolong | 2009 | International Journal of Elec-tronics and Communications2009，63，2： | 1 |
| 11 | Pathogenesis of Biliary Filling Defect-Related Complications Following Orthotopic Liver Transplantation显示文摘 | Yu He Leida Zhang Qian Lu Jun Din Zhanyu Yang Zhihua Li Ping Bie Shuguang Wang Jiahong Dong | 2007 | 器官移植内科学杂志2007，2，4： | 0 |
| 12 | Image adaptive RST invariant watermark using pseudo- Zernike moments显示文摘Rotation,scaling and translation(RST)attacks can desynchronize watermark detection,which causes failure in many watermarking systems.In this paper,an image adaptive RST invariant watermark(AWPZM)is proposed by using the rotation invariant property of pseudo-Zernike moments(PZM)and odd-even quantization.PZM of the original image is computed first,and then those suitable for watermark generation are selected.Then,magnitudes of them are odd-even quantized to generate the watermark.In detection,a normalized hamming function is employed to determine the similarity of the watermark.Experimental results show its robustness to rotation and scaling.For traditional attacks,such as JPEG compression,added noise and filtering,the similarities are all above 0.95. | Leida LI Baolong GUO | 2008 | Frontiers of Electrical and Electronic Engineering in China2008，3，1： | 0 |
| 13 | Safety analysis of COVID-19 vaccines in liver transplant recipients:a two-center study显示文摘Up to know,product information for COVID-19 mRNA vaccines do not include their use in patients receiving immunosuppressive medication,since they were not included in trials(1).For the BNT162b2 mRNA vaccine,one case of otherwise totally asymptomatic elevations of alanine aminotransferase(ALT),aspartate aminotransferase(AST),alkaline phosphatase(ALP)andγ-glutamyl transpeptidase(GGT)serum concentrations in a liver transplant recipient has been reported after the first injection(2).In the present retrospective study,we present safety outcomes of COVID-19 vaccinations in 56 liver transplant patients from two Chinese centers vaccinated with the domestic PiCoVacc,BBIBP-CorV and ZF2001 vaccines.Thirty vaccinated physicians from the Hepatopancreatobiliary Center of Beijing Tsinghua Changgung Hospital served as control,from which 1 participant received an Ad5-nCoV vaccine.The study deadline was 2021-10-31.The observation period for adverse reactions,such as muscle pain and fatigue was 1 week,while for laboratory examinations such as liver function the follow-up period was 1 month. | Rui Tang Chao Li Guangdong Wu Xuan Tong Lihan Yu Huayuan Hao Rui Liao Yucheng Hou Jun Li Wenping Zhao Tieyan Fan Leida Zhang Qian Lu | 2022 | Hepatobiliary Surgery and Nutrition2022，11，1： | 0 |
| 14 | No-Reference Quality Assessment of Enhanced Images显示文摘Image enhancement is a popular technique,which is widely used to improve the visual quality of images.While image enhancement has been extensively investigated,the relevant quality assessment of enhanced images remains an open problem,which may hinder further development of enhancement techniques.In this paper,a no-reference quality metric for digitally enhanced images is proposed.Three kinds of features are extracted for characterizing the quality of enhanced images,including non-structural information,sharpness and naturalness.Specifically,a total of 42 perceptual features are extracted and used to train a support vector regression(SVR) model.Finally,the trained SVR model is used for predicting the quality of enhanced images.The performance of the proposed method is evaluated on several enhancement-related databases,including a new enhanced image database built by the authors.The experimental results demonstrate the efficiency and advantage of the proposed metric. | Leida Li Wei Shen Ke Gu Jinjian Wu Beijing Chen Jianying Zhang | 2016 | China Communications2016，13，9： | 0 |
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