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180 results on '"Lv, Zhigang"'

7. Research and Application of Clustering Algorithm in Battlefield Scheduling Genetic Optimization

Author

Li, Jialun, Wang, Peng, Li, Xiaoyan, lv, Zhigang, Fu, Bowen, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, WU, C. H., editor, PATNAIK, Srikanta, editor, POPENTIU VLÃDICESCU, Florin, editor, and NAKAMATSU, Kazumi, editor

Published
2021
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32. A pseudo‐colour enhancement algorithm for high‐bit RAW greyscale image of X‐ray film displaying on low‐bit monitors.

Author

Lv, Zhigang, Li, Liangliang, Wang, Hongxi, Wang, Peng, Li, Jianheng, Shu, Lei, and Li, Xiaoyan

Subjects
*RADIOGRAPHIC films, *X-ray imaging, *X-ray detection, *IMAGE recognition (Computer vision), *IMAGE enhancement (Imaging systems), *ALGORITHMS, *EYE tracking
Abstract

X‐ray flaw detection is widely used in non‐destructive area. The intuitive defect information can be obtained through the X‐ray film, which is usually digitized into high greyscale image by a 12‐bit or 16‐bit, called super 8‐bit, industrial scanner. When an ordinary 8‐bit monitor displays a super 8‐bit greyscale image, it appears loss of detail information, blurring of the image appears and other problems. Therefore, in this paper, a pseudo‐colour enhancement algorithm for displaying high‐bit RAW images on low‐bit monitor was proposed according to the chromatographic mapping relationship based on the visual characteristics of human eye. First, a high grey‐scale pseudo‐colour enhancement algorithm, called HOTM‐HGL, based on hot metal coding was proposed based on the standard film, whose enhancement effect is better than current mainstream algorithms. Second, aiming at the non‐standard film, a new stretching function called RAW‐Optical‐Stretching was reconstructed to improve HOTM‐HGL algorithm, called HOTM‐HGLS algorithm, whose display effect on ordinary monitors was improved in further. Finally, HOTM‐HGLS algorithm was applied in the detection of X‐ray film defect, which was convenient for the capture of defect information in the weld. Compared with the existing algorithms, various indicators have been greatly improved, enriching the amount of information and strengthening the image recognition effects. [ABSTRACT FROM AUTHOR]

Published
2023
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41. Correction for Zeng et al., “Intracellular Tat of Human Immunodeficiency Virus Type 1 Activates Lytic Cycle Replication of Kaposi’s Sarcoma-Associated Herpesvirus: Role of JAK/STAT Signaling”

Author

Zeng, Yi, primary, Zhang, Xunhai, additional, Huang, Zan, additional, Cheng, Lin, additional, Yao, Shuihong, additional, Qin, Di, additional, Chen, Xiuying, additional, Tang, Qiao, additional, Lv, Zhigang, additional, Zhang, Ling, additional, and Lu, Chun, additional

Published
2021
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43. Investigation on the Dry-Type Electrochemical Polishing of 304 Stainless Steel with Ion-Exchange Resin Particles

Author

Lv, Zhigang, Wang, Lishi, Liu, Yafei, Hu, Xinbin, and Bu, Zhixiang

Abstract

Dry-type electrochemical polishing (DECP) technology integrates the mechanical action of resin particles with the electrochemical action of working solutions to enhance the results of existing treatments. Homogeneous polishing across the entire surface of the piece is the main advantage compared with mechanical polishing. This article utilizes this method to polish the surface of 304 stainless steel, leading to an improved surface roughness from the original 1.23 μm to the final 98 nm. This innovation expands the potential applications of 304 stainless steel in the medical and food industries. Energy dispersive X-ray spectroscopy (EDS) analysis subtle detect residual electrolyte components. It implies that resin particles containing liquid electrolytes can effectively prevent the remained harmful substance from the metal surface. Electrochemical analysis of polished sample shows that the Ecorrwas −0.109 V for DECP specific sample compared with −0.0385 V for initial sample. The polishing process can be seen as the generation and removal of corrosion products.

Published
2024
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44. Design of Film Digitizer Equipment and Film Weld DefectRecognition Technology in Pressure Vessel

Author

Du Weidong, Wang Peng, Li Xiaobin, Lv Zhigang, and Zhang Feng

Subjects
Film Digitizer, Pressure vessel, Weld, Defect identification, Engineering (General). Civil engineering (General), TA1-2040
Abstract

According to the characteristics of image defects, this paper integrated use of image preprocessing, image segmentation algorithms, expert systems and other methods, presented a film weld defect identification method for non-destructive testing in the pressure vessel weld defect recognition, and to achieve in MATLAB. This paper also described the expert system’s basic principles, structure, establish methods and identification strategy. In the light of the weld defect characteristics from different levels of recognition, through continuous testing to improve the film defect system library and to further enhance the defect recognition rate.

Published
2016
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