CN104486524B - 检测图像是否经历两次压缩质量相同的jpeg压缩的方法 - Google Patents
检测图像是否经历两次压缩质量相同的jpeg压缩的方法 Download PDFInfo
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- CN104486524B CN104486524B CN201410853662.3A CN201410853662A CN104486524B CN 104486524 B CN104486524 B CN 104486524B CN 201410853662 A CN201410853662 A CN 201410853662A CN 104486524 B CN104486524 B CN 104486524B
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- 230000006835 compression Effects 0.000 title claims abstract description 75
- 238000007906 compression Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000000605 extraction Methods 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims description 84
- 238000013139 quantization Methods 0.000 claims description 22
- 230000006837 decompression Effects 0.000 claims description 4
- 238000010606 normalization Methods 0.000 description 6
- 239000000284 extract Substances 0.000 description 3
- 238000012706 support-vector machine Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/001—Model-based coding, e.g. wire frame
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/007—Transform coding, e.g. discrete cosine transform
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CN201410853662.3A CN104486524B (zh) | 2014-12-30 | 2014-12-30 | 检测图像是否经历两次压缩质量相同的jpeg压缩的方法 |
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CN201410853662.3A CN104486524B (zh) | 2014-12-30 | 2014-12-30 | 检测图像是否经历两次压缩质量相同的jpeg压缩的方法 |
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CN104486524A CN104486524A (zh) | 2015-04-01 |
CN104486524B true CN104486524B (zh) | 2017-10-03 |
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CN106485738B (zh) * | 2015-08-26 | 2019-04-05 | 中国科学院深圳先进技术研究院 | 一种估计位图的jpeg压缩量化步长的方法和装置 |
CN110415816B (zh) * | 2019-07-26 | 2023-02-21 | 郑州大学 | 一种基于迁移学习的皮肤病临床图像多分类方法 |
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US7439989B2 (en) * | 2006-02-17 | 2008-10-21 | Microsoft Corporation | Detecting doctored JPEG images |
CN102413328B (zh) * | 2011-11-11 | 2013-11-06 | 中国科学院深圳先进技术研究院 | Jpeg图像双重压缩检测方法及系统 |
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Application publication date: 20150401 Assignee: Dongguan pinenshi Intelligent Equipment Co.,Ltd. Assignor: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES Contract record no.: X2023980039276 Denomination of invention: A method for detecting whether an image has undergone JPEG compression with the same quality twice Granted publication date: 20171003 License type: Common License Record date: 20230809 |
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Application publication date: 20150401 Assignee: SHENZHEN HUAYUNXINCHUANG TECHNOLOGY CO.,LTD. Assignor: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES Contract record no.: X2023980043783 Denomination of invention: A method for detecting whether an image has undergone JPEG compression with the same quality twice Granted publication date: 20171003 License type: Common License Record date: 20231019 |