| Alta U9000图像数据由16位到8位的转换 |
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| 引用本文： | 原玉磊,席靓,郑勇.Alta U9000图像数据由16位到8位的转换[J].海军航空工程学院学报,2012,27(3):263-266. |
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| 作者姓名： | 原玉磊 席靓 郑勇 |
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| 作者单位： | 1. 解放军信息工程大学测绘学院,郑州450052
2. 海军航空工程学院科研部,山东烟台264001 |
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| 基金项目： | 国家自然科学基金资助项目（10878025） |
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| 摘 要： | 科学级CCD图像一般是16位的,为了便于在Windows中显示处理过程中的16位图像,需要将16位图像转换为8位图像。介绍了2种转换算法:直接转换法和区间转换法。研究表明:直接转换法实现简单,但容易丢失信息,当原始图像中的有效信息区间较小时,应使用区间转换法;根据原始图像直方图确定用有效信息区间的算法,该算法与CCD的噪声点个数有关,通过对科学级CCD Alta U9000噪声情况的测试,给出了确定U9000图像有效信息区间的方法。
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| 关 键 词： | 图像转换 直接转换法 区间转换法 有效信息区间 AltaU9000图像 |
Transforming 16 Bits Images of Alta U9000 to 8 Bits |
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| YUAN Yu-lei,XI Liang and ZHENG Yong.Transforming 16 Bits Images of Alta U9000 to 8 Bits[J].Journal of Naval Aeronautical Engineering Institute,2012,27(3):263-266. |
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| Authors: | YUAN Yu-lei XI Liang and ZHENG Yong |
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| Institution: | 1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, China; 2. Department of Scientific Research, NAAU, Yantai Shangdong 264001, China) |
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| Abstract: | In order to display 16 bits~images of science grade CCD in Windows when being progressed, it is necessary to transform 16 bits images to 8 bits images. Two transforming methods were introduced, the direct transforming method and the interval transforming method. The direct transforming method was easy to realized, but some useful information maybe eliminated using it. When the useful information interval of 16 bits images was short, the interval transforming method should be used. An algorithm to calculate the useful information interval based on the histogram of 16 bits images was represented. It was related with the number of noise points in images. A method to calculate the useful information interval of Alta U9000 images was represented based on the test of U9000 noises. |
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| Keywords: | images transforming direct transforming interval transforming useful information interval Alta U9000 image |
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