The interpolatory edge operator is applied to the recognition of cotton and ramie fibers. Its performance is studied in comparison with the Canny edge operator in the fiber’s edge detection for cross-sectional image....The interpolatory edge operator is applied to the recognition of cotton and ramie fibers. Its performance is studied in comparison with the Canny edge operator in the fiber’s edge detection for cross-sectional image. The input image is interpolated other than Gaussian function smoothing. The quality of edge output is improved by the interpolatory edge operator. It produces edge output with good continuity for low-resolution input. The fine edge output, such as cross-markings, can be distinguished clearly, so the interpolatory edge operator is suitable for the study of cotton and ramie fibers. Furthermore, the application of the interpolatory edge operator can cut the hardware cost, reduce the storage and speed up the data transmission.展开更多
Two-dimensional ultraviolet(2 DUV) spectroscopy is a novel technology for probing molecular structure. We have developed a generalized quantum mechanics/molecular mechanics(QM/MM) approach to simulate the electronic t...Two-dimensional ultraviolet(2 DUV) spectroscopy is a novel technology for probing molecular structure. We have developed a generalized quantum mechanics/molecular mechanics(QM/MM) approach to simulate the electronic transitions of protein backbones and aromatic amino acids in aqueous solution. These transitions, which occur in the ultraviolet(UV) region, provide a sensitive probe of molecular structure. The features of 2 DUV spectra are accurately characterized and enable us to trace small variations in the structure and dynamics as well as evolution propensity with high accuracy. Various structures and dynamic phenomena are investigated to construct a systematic framework for 2 DUV simulation mechanisms, so as to explore further applications of this technique. In this feature article, we summarize the theory and applications of 2 DUV spectroscopy we have engaged in recently, present the important roles of 2 DUV spectroscopy, and outline directions for future development. We hope this article can offer a platform for more scientists in different research fields to gain a clear overview of 2 DUVand further attract more people to explore this promising field.展开更多
基金Supported by Foundation of National Excellent Doctoral Dissertation of China (No.200350) , NSFC (No.90204006,60377013) ,863Project (No.2005AA122110) ,the Ministry of Education, China (No.20030248035)
文摘The interpolatory edge operator is applied to the recognition of cotton and ramie fibers. Its performance is studied in comparison with the Canny edge operator in the fiber’s edge detection for cross-sectional image. The input image is interpolated other than Gaussian function smoothing. The quality of edge output is improved by the interpolatory edge operator. It produces edge output with good continuity for low-resolution input. The fine edge output, such as cross-markings, can be distinguished clearly, so the interpolatory edge operator is suitable for the study of cotton and ramie fibers. Furthermore, the application of the interpolatory edge operator can cut the hardware cost, reduce the storage and speed up the data transmission.
基金supported by the National Natural Science Foundation of China (21703221, 21473166)Hefei Science Center CAS (2016HSC-IU012)
文摘Two-dimensional ultraviolet(2 DUV) spectroscopy is a novel technology for probing molecular structure. We have developed a generalized quantum mechanics/molecular mechanics(QM/MM) approach to simulate the electronic transitions of protein backbones and aromatic amino acids in aqueous solution. These transitions, which occur in the ultraviolet(UV) region, provide a sensitive probe of molecular structure. The features of 2 DUV spectra are accurately characterized and enable us to trace small variations in the structure and dynamics as well as evolution propensity with high accuracy. Various structures and dynamic phenomena are investigated to construct a systematic framework for 2 DUV simulation mechanisms, so as to explore further applications of this technique. In this feature article, we summarize the theory and applications of 2 DUV spectroscopy we have engaged in recently, present the important roles of 2 DUV spectroscopy, and outline directions for future development. We hope this article can offer a platform for more scientists in different research fields to gain a clear overview of 2 DUVand further attract more people to explore this promising field.
