Detection of linear and cubic interpolation in JPEG compressed images

被引：144

作者：

Gallagher, AC ^{[1
]}

机构：

[1] Eastman Kodak Co, Rochester, NY 14650 USA

来源：

2nd Canadian Conference on Computer and Robot Vision, Proceedings | 2005年

关键词：

D O I：

10.1109/CRV.2005.33

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

A novel algorithm is introduced that can detect the presence of interpolation in images prior to compression as well as estimate the interpolation factor The interpolation detection algorithm exploits a periodicity in the second derivative signal of interpolated images. The algorithm performs well for a wide variety of interpolation factors, both integer factors and non-integer factors. The algorithm performance is noted with respect to a digital camera's "digital zoom" feature. Overall, the algorithm has demonstrated robust results and might prove to be useful for situations where art original resolution of the image determines the action of an image processing chain.

引用

页码：65 / 72

页数：8