图像

Digital image watermark, as a branch of data hiding technology, imbeds symbol information into the protected image using the redundancy attribute of Human Visual System. As an effective approach of copyright protection of digital image, it has become a hotspot in the field of information security recently.

数字图像水印技术是信息隐藏的一个分支，它利用人眼视觉冗余，将标志信息作为水印嵌入到被保护图像之中，是数字图像版权保护的一个新兴方法，也是数字产品版权保护领域中的有效途径，近年来已成为信息安全领域的一个研究热点。

Digital image watermark, as a branch of data hiding technology, imbeds symbol information into the protected image using the redundancy attribute of Human Visual System. As a new methodology of copyright protection of digital image, it has become a hotspot in that field recently.

数字图像水印技术是信息隐藏的一个分支，它利用人眼视觉冗余，将标志信息作为水印嵌入到被保护图像之中，是数字图像版权保护的一个新兴方法，也是数字产品版权保护领域中的一个研究热点。

The common way to do this is to use OCR to translate the images to a document format that indexers already know, but the drawback is that we often lose the layout, images and color of the original – plus, since no OCR is perfect, we need the original image to be able to fix mistakes.

共同的方法是使用OCR翻译的图像文件格式，索引已经知道，但缺点是，我们经常失去布局，图像和原始色彩-加，因为没有光学字符识别是完美的，我们需要原始图像能够修复的错误。

And then, combing a proposed feature data preprocessing mechanism and the multiple classifiers fusion, an ultrasound uterus image recognition framework is proposed.4, A fast and automatic ultrasound uterus image recognition algorithm for the intra-uterine device is proposed and realized. The algorithm is composed of automatic ultrasound uterus image segmentation and the specific recognition framework, which are connected by object of interest.

随后结合特征降维进一步提出了一种特征数据预处理机制，并在此基础上结合多分类器融合提出了一种超声子宫图像识别框架。4、设计并实现了一种快速全自动的超声子宫图像节育环物体识别及定位算法，其包括全自动超声子宫图像分割和特定模式识别框架两大部分，通过感兴趣物体(Obiect of interest，OOI)进行连接。

Based on this idea,a new method of no-reference objectively assessing image quality is presented.The DCT coefficients of the ac component can be approximated as a Laplacian distribution.

假设图像的DCT系数是Laplacian分布，首先根据JPEG图像的DCT系数估计出图压缩前的DCT系数分布参数，并由此估算出图像压缩前、后DCT系数的均方误差值。

This nonlinear filtering will reduce less image details in segment than a linear method.

这种基于数学形态学的图像分割方法可以克服传统线性方法的不足，在不损失图像细节的情况下，分割出不同尺度下的图像目标和区域。

Two image quality evaluation of the function. Including psnr PSNR, it is mean-square error nmse other. Images can be used for de-noising and compression of image quality evaluation.

详细说明：两个图像质量评价函数，psnr峰值信噪比，正则均方误差nmse，能可用于去噪图像和压缩图像的质量评价，很有用啊。

The linear darkness transform method is used to increase the contrastiveness of pictures; the improved mid-value filtering algorithm and local average method are adopted to protect the edge as much as possible on the basis of noise elimination.

采用线性灰度变换等方法对图像进行增强，使图像的对比度扩展。采用改进型中值滤波法和多图像平均法，在去除了噪声的基础上尽可能的保护了边缘。

A denoising smoothing algorithm of image edge preserving is proposed according to image correlation theorem, image edge information characteristic and the union mid-value filter and the weighting template merit.

利用图像相关性原理，结合图像边缘信息的特点，利用中值滤波和加权模板的优点，提出一种图像边缘保持的去噪平滑算法。

For this reason, the author used mid-value filtering method for diminishing the pattern noise, the binary-image transformation method by selecting variable threshold value, and the extraction method of the central line for full-field binary-image.

为此作者使用中值滤波法对图像噪声进行抑制，利用可变阈值对图像进行二值化，实现了二值图像条纹灰度中心线的自动检出。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。