原始图象 meaning in English
primary image
Examples
- On a document copying machine , to accurately position the image of the original on the copy material
在文件复制机上，准确地定位原始图象在复印材料上的位置。 - The former requires the availability of a ground truth . the latter performs change detection without any additional information besides the raw images considered
前一种需要利用先验知识,而后一种除了利用原始图象信息外,不需要任何另外信息。 - Wavelet transform has many properties which other analysis techniques ( for example , fourier analysis , gabor transform , etc ) do not have , the coefficients in each wavelet channel of a multiresolution decomposition of an image reflect some characteristics of the image . . especially , for texture image the texture energy in each channel represents the thickness and orientation of the texture . this dissertation introduce wavelet analysis to image segmentation . based on analysising deeply characteristics of wavelet transform , the author has made qualitative texture analysis using wavelet frames in this paper
小波分析具有其他许多分析手段(比如fourier变换、 gabor变换等)所不具备的一些优良特性。使用标准的张量积型二维小波对原始图象进行分解后，形成金字塔式小波变换的多通道(多子带) ，其各个通道的小波系数均反映了图象的某些特点，尤其对于纹理类图象，小波通道的纹理能量值描述了纹理的粗细度及其方向性。 - The original image is divided into non - overlap square domain block collection and range collection , which is fourfold the domain block . to every domain block , the best self - similarity transformation is gained by matching the found best similar range block , the parameters of the gained best domain block ' s transformations are the image compression code . the fourth chapter discusses and implements fractal image compression method based on region partit ion
在第三章中讨论并实现了基于子块划分的分形图象压缩方法，这种方法将原始图象划分为不重叠的正方形值域块集和四倍大小的正方形定义块集，对于每一个值域块，在定义块集中通过最佳匹配找出最相似的定义块，通过匹配得到值域块的最佳自相似变换，对所在值域块的最佳自相似变换参数编码实现图象压缩。 - Then the author analyzes fundamental principles of digital watermarking algorithm in detail such as the general framework , classification and the typical algorithm , puts forward two dct domain image digital watermarking algorithms based on the principles of jepg . the algorithm i is a private watermarking algorithm which need the original image in the process of extract the watermark . while the algorithm ii do n ' t need because it is a semi - private watermarking algorithm
在此基础上，论文遵循国际jepg静态图象压缩标准的原理，提出了两个“基于dct变换的数字水印算法” ，其中算法采用私有水印的设计思想，即在提取检测水印信息时需要原始图象；算法则是半私有水印算法，在提取检测水印时无需原始图象。