图像模型

The forecast algorithm is based on the peculiarity of 3D imag es i.e the deformation of the contour along the space or time axis is continuous in 3D imag es . The forecast algorithm analyz es the trend of the deformation of the contour in the segmented imag es , then prognosticates the location and the shape of the contour in the next image .

三维图像中物体的轮廓沿着空间轴或时间轴的位移和形变是连续的，该算法根据这一特性，利用前几幅图的分割结果来预测当前图像中物体轮廓的位置和形状，弥补了主动轮廓模型搜索范围小的缺点。

In allusion to the problems when retrievaled the brightness temperature images and temperature images, found some models to optimize them.

对亮温图像和温度图像反演中碰到的一些问题做了一些优化模型进行纠正。

In color image, skin color model is used for segmenting regions in which may have faces, and then two BP neural networks in cascade connection serve as a face detector, at last template matching is used to exclude false alarms. With the elimination of false areas, the research area will become smaller and smaller, one or multiple faces detection will be accomplished eventually.

针对彩色图像先利用肤色模型进行肤色分割来缩小搜索范围，然后对灰度图像采用两个级联结构的BP神经网络分类器，进行人脸和非人脸两类模式的判别，最后结合模板匹配的方式进行验证，通过采用这种逐步排除的方法一步一步缩小搜索区域，实现单个或多个正面端正人脸的检测与定位。

Firstly,two chaotic maps are suggested and their statistic characteristics are also analyzed.Secondly,to accomplish a controllable visual effect of encrypted image,a visual quality control model is presented,and on the basis of which,a chaotic image encryption scheme is constructed by chaotically adjusting the randomly selected approximate coefficients at the coarsest level in wavelet domain.Then,the security and efficiency of the algorithm are analyzed.

首先给出了两个混沌映射，并分析了其统计特性；为实现基于质量可控的图像加密，构建了加密的视觉质量控制模型；在此基础上，通过对随机选取的最粗级小波近似系数进行深度可控的混沌调节，实现了图像加密；最后，对加密算法进行了有效性分析。

Source images with wavelet are decomposed, and corner information can be detected in the two approximate sub-images on the wavelet coarsest level. The initial registration parameters are achieved through affine transform model. The optical flow is iteratively refined to get the coarse registration parameters. The process will continue until the final and accurate matching parameters are obtained.

首先对源图像进行小波分解，在小波金字塔最顶层的低频近似子图像上进行角点检测，通过仿射变换模型得到初始配准参数；然后将这一参数逐层进行迭代精炼，直至达到金宇塔最底层，得到最终精确的配准参数。

For meeting the needs of automated real-time dynamic monitoring of heavy fog events by means of a weather satellite remote-sensing technique for specialized meteorological services like military operations and highway traffic, the paper presents a systematic study of spectral characteristics of visible and infra red light, the textures and dynamic dispersals of fogs on satellite imagery in the context of theory on the transmission of atmospheric radiation, thereby revealing their abruptness, waviness and mass-like features, which, in combination with a synthetic technique for cloud/fog maps of multi-channel remote-sensing spectra are used to set up a model for automatic separation of fogs from clouds based on the integrative application of spectral features and texture structures, for which are constructed corresponding discfiminant functions and criteria, and on this basis prepared is a"system for remotely-sensing monitoring of low cloud and heavy fog"which has been used for tests, with the main conclusions shown as follows.

本文针对军事和高速公路等专业气象服务中应用气象卫星遥感技术对大雾进行自动化实时动态监测的实际需要，从大气辐射传输理论入手，系统地研究了气象卫星遥感图像上云雾的可见光和红外光谱特征、纹理结构特征和大雾的消散动态特征，揭示了雾的突发性、波动性和团状雾特性，通过研究多通道遥感光谱的云雾图像合成技术，建立了综合应用光谱特征和纹理结构特征的云雾自动分离模型，给出了相应的判别函数和判别准则，研制了&低云大雾遥感监测系统&，并进行了实际应用试验。

The AC coefficients of an image's Discrete Cosine Transform are best approximated by Laplacian distribution model. Based on this model,the blind information hiding algorithm was proposed.

基于图像离散余弦变换交流系数的拉普拉斯分布模型，提出了一种盲提取数字图像信息隐藏算法。

The experimental results show that the system performs well in accuracy,verifying the great potential of data minging in assistant medical treatment.

医学图像的数据挖掘旨在从海量的图像数据中挖掘出有效的模型、关联、规则、变化、不规则以及普遍的规律，以加速

Firstly, visual attention mechanism, visual attention computing model and the art state are introduced. Secondly, the need and importance of visual saliency in image are analyzed. In addition, the levels, extraction and measurement of visual saliency are discussed in detail. At last, open problems are put forward.

本文首先介绍了视觉注意力、视觉注意力计算模型及研究现状，其次分析了图像中引入视觉显著性的必要性和重要性，论述了图像视觉显著性的层次、显著性特征的选择及度量；最后给出了有待研究的重点问题。

The improved model possesses band-pass filer characteristic, diffuses processing stability and satisfies the max-min principle. The simulation results show that the median filter is only proper for outlies noise and removes the thin line and corners of image. The linear filter extends or blurs the boundary of image. The anisotropic diffusion removes random noise effectively, but it brings about illusive edge and back diffusion for outlies noise. The improved model that possesses both median filter characteristics and anisotropic diffusion capability is proper for various mixed noise and can sufficiently protect the detailed characteristic such as corner, thin line and edge.

研究结果表明：中值滤波作为一种经典的非线性滤波方法仅适合于&飞点&噪声的滤波并引起图像的角点、线条损失，线性滤波扩大或使图像边界范围模糊；传统的各向异性扩散能对随机噪声有效地压制，但对&飞点&噪声会产生虚假的边缘甚至反扩散，而改进模型既具有中值滤波的特性又具有传统各向异性扩散的性能，适合于平滑不同强度与形状的混合噪声，并对角点、线条、边缘等细节信息提供足够保护。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。