图像重采样

DCT域统计特性的图像重采样检测

Image Resampling Detection Based on Statistic Features in DCT Domain

在分析图像重采样理论和实现方法的基础上，应用星载InSAR数据进行了双三次卷积采样和双线性插值采样的对比试验，表明双三次卷积采样是比较理想的方法。

The theory and method of image sampling are analyzed . The experiments contrasting bi-cubic convolution method to bi-linear interpolation method with the spaceborne InSAR data show the former is perfect .

信息取证中图像重采样检测

Re-sampling detection in information forensics

该方法将旋转分成三步来实现，每一步使用一维的FFT变换对图像进行重采样来实现，将图像旋转中几何位置变换和灰度插值合二为一，不需要另外的插值运算。

It decomposed the rotation into three steps and each step was performed by 1D FFT to resample the image . It made the geometry location transformation and interpolation one in traditional image rotation algorithms combined to form one transformation without extra interpolation .

一种图像校正重采样效应的评估及优化方法

Evaluation and Optimization Method of Resampling Effects in Image Rectification

能抵抗对图像的重采样攻击，可从显示屏幕拷贝的图像中提取水印。

( It 's ) also robust to the resampling attack and can be drawed from the image by the screen copy .

该模块利用可变大小的窗口滤波插值进行图像像素重采样，能同时适用整数和分数缩放比例的图像缩放。

The module is designed for both integral and fractional scaling ratios and utilizes variable filter window for calculating pixels of a scaled image to realize pixel re-sampling .

分析了图像校正中重采样效应的主要表现形式，建立了一种重采样效应的评估方法。

In this paper , we analysis the cause of effects of resampling and propose an evaluation method .

即获取或设置用于拉伸图像的插值（重采样）方法。

Gets or sets the interpolation ( resampling ) method used to stretch images .

提出了通过图像存储映射、重采样优化以及序列匹配进行加速的基本策略，并试图通过图像分割限定三维建模区域来减少数据处理量。

As the basic strategies for acceleration , the image storage mapping , the re-sampling optimization , and the sequence matching are utilized .

在算法的最后，利用筛选出的正确点对求得待配准的两幅图像间的仿射变换参数，并对图像进行重采样和镶嵌。

Finally , the affine transformation parameters were estimated from the correctly corresponding points .

图像缩放是指图像分辨率的改变，也叫图像重采样，是数字图像处理中的关键技术之一。

Image scaling , also known as image resampling , is one of the key technologies in digital image processing .

接着依据校正图像是否充分有效利用参考图像，提出了图像校正重采样效应的评估准则；

Meanwhile this paper develops an criteria for resampling-effect assessment depending on the degree of pixel information exploitation that rectified images based on the reference images .