图像模型

In this thesis, we will mainly do research on the novel scheme for Digital image Steganography, Digital Image Secret Transmission in network and the development of the information hiding device for application. The main contributions of this thesis are as following: The novel conversion method for mapping image to complex number is proposed, and the plus, minus, multiply and complex conjugate operation of image are defined based on Positional number systems and complex number system. Following new results have been gotten: 1 The suitable complex number basis to be used to express integers is a big set. 2 Any image can be mapping into a one-to-one point. 3 Lots of image processing problem can be considered based on geometric theory.

在本论文中，研究工作集中在数字图像伪装算法的新模型、图像在网络中的加密传输的新方案和信息伪装设备的研发等三个方面，主要包括：基于位值制记数法和复数系理论，提出利用复数作为基底的数字图像新的表示方法，用复数运算定义了图像和图像间的"加"、"减"、"乘"、"共轭"等运算关系；得到理论结果： 1、能表示任何整数的复数基是很大的一个集合。2、任何一幅图像，都能和复平面上的一个点一一对应。3、可以将图像问题化归为平面几何问题处理。4、复数系下的图像表示适合用于信息伪装。

However, this dissertation concentrates on the following topics: First, a new image semantic data model and object description language have been proposed in this dissertation based on the characteristics of image information.

主要内容包括：(1)图像数据库系统模型研究。针对图像信息的特点，建立了图像数据库系统的对象语义模型ISDM及相应的对象描述语言。

Constructing geometric model of analyzed object is the first step of mesh generation, in this research subject, we mainly analyze the medical encephalon CT picture ,so we select digital instrument to extract border characteristic points from encephalon CT picture and create the analyzed object geometric model.

进行网格剖分首先要建立分析对象的几何模型，鉴于本文的分析对象是医学脑CT扫描图像，为此采用数字化仪从脑CT扫描图像中提取边界特征点，以此形成分析模型的边界轮廓，从而建立分析模型的几何模型。

The edge pixel is processed by Partial Differential Equation. PDE enhances edge and smoothes jaggies in the edge. The pixel in smooth regions of under-interpolated image is processed by Non Local-means model. NL-means model gets gray value of pixel by weighted averaging global information in image and image is smoothed.

使用偏微分方程处理边缘像素，锐化边缘同时平滑边缘块状效应；平滑区域像素点的插值操作使用非局部均值模型，非局部均值模型通过对原始图像全局信息加权平均得到待处理图像像素值，图像平滑。

This paper presents a new rendering algorithm by the contrast between the Flat method, Gouraud method and Phong method, through which the color of each pixel can be figured out under the lighting model after the coordinates and normal of every corresponding point on the 3D-object surface have been calculated from the pixels in the range where the 3D-object is projected onto the photo, in order to provide each pixel a real color and get an image with strongest feeling of reality.

本文在对比研究了真实感图形生成中传统的Flat，Gouraud，Phong等明暗渲染方法后，提出了一种新的明暗渲染方法。在图像平面三维物体的投影范围内，由图像的像素坐标求出物体模型对应点的三维坐标及其法矢，然后对每个像素点根据光照模型来计算其明暗度。这种方法能够最大可能的保证图像中每一像素点明暗度的真实性，从而使所生成的真实感图像更加逼真。

Methods 1、Choose one fresh pelvis specimen of adult man, affirmat it is normal or not by checking it with X-ray at first; then scan it with helix CT, keep the pelvic quiescing when being scaned. Obtain series fault images of the pelvis, import the images into Mimics10.01 software and restitue 3D visible model of pelvis.

获取骨盆系列断层图像，将图像按顺序导入利用Mimics10.01软件，重建骨盆三维可视模型；再利用FreeForm软件对模型进行修饰处理，并截取髋骨模型；然后将三维髋骨以IGES格式导入有限元软件Ansys8.0进行力学参数赋值，建立髋臼三维有限元模型。

Shortcomings of Tikhonov regularization model in Sobolev space for image zoom in are analyzed and a digital total variation model with image inpainting for noisy image zoom-in is presented.

分析了利用Sobolev空间Tikhonov正则化模型对带噪图像进行放大的不足，基于图像的修复模型，提出带噪图像放大的数字全变差模型。

A frame image of a video frequency sequence is read into a postpositional memory zone, and staring position and size information of a tracked object is obtained in the frame, then distribution statistical information of a target signature is extracted to build a gauss mixed model as an object template, a mean vector and a covariance matrix in gauss mixed distribution are used to describe the position and the size of the object, then the next frame image of the video frequency sequence is read into the postpositional memory zone. In a new frame video frequency image, a parameter estimation method is used to obtain object gauss mized model parameters in the current frame in iterative computation and find candidate template similar to the object template, and the final model parameters obtained in iteration are used to update the tracking window for realizing self-adaption of the tracked window.

将视频序列的一帧图像读入缓存区，获得该帧中被跟踪目标的初始位置和尺寸信息，然后提取目标特征的分布统计信息建立高斯混合模型作为目标模板，用高斯混合分布的均值向量和协方差矩阵描述目标的位置和尺寸，再将视频序列下一帧图像读入缓存区，在新一帧视频图像中利用参数估计方法迭代计算当前帧中目标高斯混合模型参数找到与目标模板最相似的候选模板，利用迭代得到的最终模型参数更新跟踪窗口实现跟踪窗宽的自适应。

In the software aspect of 3DP control system, include solid model stratified slicing module, 2D slice data processing module, ink-jet control module, motion control module, etc. Slice module is based on the color STL model output from Magics RP software, its output synusia data is TIFF、JPG、BMP format of CMYK color images. 2D slice data processing module use RIP and dithering algorithm to process 2D color images, thereby achieve the color image information correspond with each micro-nozzle. Ink-jet control module's function is to control each nozzle's on/of.

其中实体模型分层切片模块是基于Magics RP软件输出的彩色STL模型进行的，其输出层片数据为TIFF、JPG、BMP的CMYK格式的彩色图像；二维切片数据处理模块通过RIP算法和抖动算法对一系列二维彩色图像进行数据解析，从而实现图像的色彩信息与每个微细喷嘴的一一对应；喷墨控制模块的功能是控制每个微细喷嘴的喷射与关闭；运动控制模块则负责所有加工成型运动的协调运行。

Based on modeling each frameof the sequence using TIP technique, we reconstruct the pseudo model of the scene aboutthe image sequence by mosaicking the models to a global model or using a switchingstrategy; then walkthrough can be done in the pseudo model freely.

在对序列图像的每一幅都建模的基础上，我们通过模型拼接或者模型切换生成，建立有关图像序列场景的伪模型，然后实现了在伪模型内任意漫游。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。