| 变造图像的压缩率变化规律研究 |
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| 引用本文： | 代雪晶,单大国. 变造图像的压缩率变化规律研究[J]. 刑事技术, 2009, 0(6): 28-30 |
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| 作者姓名： | 代雪晶 单大国 |
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| 作者单位： | 中国刑警学院,辽宁,沈阳,110035 |
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| 摘 要： | 目的研究变造图像的压缩率变化规律。方法选择不同数码相机不同分辨率进行拍照，将拍照所得图像经过PHOTOSHOP7．0．1软件分别进行色阶、自动色阶、曲线、锐化、USM锐化、锐化边缘、进一步锐化处理。利用ACDSee6．0查看并记录原图像和处理后的图像的文件大小和压缩率。结果探索经过处理的数字图像压缩率的变化规律，根据其变化规律来鉴定数字图像的原始性。
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| 关 键 词： | 变造图像 图像压缩 压缩率 变化规律 |
Variation law of compression ratio of altered image |
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| DAI Xue-jing,SHAN Da-guo. Variation law of compression ratio of altered image[J]. Forensic Science and Technology, 2009, 0(6): 28-30 |
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| Authors: | DAI Xue-jing SHAN Da-guo |
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| Affiliation: | ( China Crimubal Police College ,Shenyang 110035,China) |
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| Abstract: | Photos were taken using different digital cameras, and then processed by Photoshop7.0. 1 using level, auto level, curve, sharpness, USM sharpness, farther sharpness. The image sizes and compression ratio of the original and processed images were viewed by ACDSee6.0 and the variation laws of compression ratio of the processed images were analyzed. |
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| Keywords: | Altered image Image compression Compression ratio Variation law |
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