In order to evaluate the imaging quality of COD cameras fully and rapidly, the minimum resolvable contrast （MRC） is presented in this paper and the system of measuring MRC is constructed as well, in which two integr...In order to evaluate the imaging quality of COD cameras fully and rapidly, the minimum resolvable contrast （MRC） is presented in this paper and the system of measuring MRC is constructed as well, in which two integrating spheres are proposed to illuminate two sides of the target respectively. The variable contrast can be obtained by regulating the luminance of integrating spheres. Experimental results indicate that the error of measuring luminance is within ±0.3 cd/m^2 ,MRC rises with the increase of the spatial frequency. The experimental results show that the method proposed is an effective apprcach to evaluate the imaaina aualitv of COD cameras.展开更多
Digital still camera is a completely typical tool for capturing the digital images. With the development of IC technology and optimization-algorithm, the performance of digital still cameras(DSCs) will be more and mor...Digital still camera is a completely typical tool for capturing the digital images. With the development of IC technology and optimization-algorithm, the performance of digital still cameras(DSCs) will be more and more powerful in the world. But can we obtain the more and better info using the combined information from the multi-digital still camera? The answer is yes by some experiments. By using multi-DSC at different angles, the various 3-D informations of the object are obtained.展开更多
The integration testing of 4K×4K Charge Coupled Device （CCD） detection system developed by researchers from the CAS Purple Mountain Observatory in cooperation with overseas coworkers was successfully carried ou...The integration testing of 4K×4K Charge Coupled Device （CCD） detection system developed by researchers from the CAS Purple Mountain Observatory in cooperation with overseas coworkers was successfully carried out for the Schmidt telescope at the Xuyi station in east China＇s Jiangsu Province recently.展开更多
基金Supported by Science and Technology Research Project of Educa-tion Department of Heilongjiang Province(10051065)
文摘In order to evaluate the imaging quality of COD cameras fully and rapidly, the minimum resolvable contrast （MRC） is presented in this paper and the system of measuring MRC is constructed as well, in which two integrating spheres are proposed to illuminate two sides of the target respectively. The variable contrast can be obtained by regulating the luminance of integrating spheres. Experimental results indicate that the error of measuring luminance is within ±0.3 cd/m^2 ,MRC rises with the increase of the spatial frequency. The experimental results show that the method proposed is an effective apprcach to evaluate the imaaina aualitv of COD cameras.
文摘Digital still camera is a completely typical tool for capturing the digital images. With the development of IC technology and optimization-algorithm, the performance of digital still cameras(DSCs) will be more and more powerful in the world. But can we obtain the more and better info using the combined information from the multi-digital still camera? The answer is yes by some experiments. By using multi-DSC at different angles, the various 3-D informations of the object are obtained.
文摘The integration testing of 4K×4K Charge Coupled Device （CCD） detection system developed by researchers from the CAS Purple Mountain Observatory in cooperation with overseas coworkers was successfully carried out for the Schmidt telescope at the Xuyi station in east China＇s Jiangsu Province recently.
