图像

This algorithm uses HSV colour space which is more compatible with human's visual sense feature and takes advantage of human's perception feature on colour to quantise colour components in non equal interval and to form the eigenvector. Then it uses histogram intersection distance algorithm to match pieces' feature, and according to the characteristic of stitching pieces of image its own, the image segmentation technique is adopted to cull the background of the piece, and simultaneously the approach to match the pieces by direction is implemented.

算法采用符合人类视觉特性的HSV颜色空间，利用人对颜色的感知特性对颜色分量进行非等间隔的量化并形成特征矢量，应用直方图相交距离进行了特征的匹配，并且针对拼块图像自身的特点采用了图像分割技术对拼块图像的背景进行剔除的同时实现了按方向进行匹配的方法。

First, the color-image was preprocessed with grayscaling, smoothing. The vertical gradient components of the image were found using the vertical mask of Sobel operator. Then the candidate areas with sufficient amount of edges were determined by calculating the gradient of edges. After finding possible vehicle candidates, the proposed method measured the prominent vertical symmetry of candidate areas and verified all possible candidates, as symmetry is an important feature of vehicle. The proposed method also figured out the vertical axis of symmetry and the width of the candidate vehicle.

算法首先对图像进行灰度化、平滑去噪等预处理，使用Sobel算子垂直方向掩模计算图像感兴趣区域内的边缘梯度，确定候选区域；而后根据车辆图像垂直边缘具有对称性的特点，分析候选区域的对称性强弱，并计算其对称轴位置和车辆宽度。

A new self-adaptive background approximating and updating algorithm based on optical flow theory is first presented in this paper.

在光流场等技术的基础上，提出了一种自适应背景逼近更新方法，以适应光线的变化以及噪声的影响；根据彩色差值模型计算当前帧图像和当前逼近背景图像的差分图像；并引入Gauss模型实现了运动目标的自适应阈值分割。

The branch first mentioned above we refer to as image oriented because it capitalizes on the pictorial aspects of the data and utilizes analysis methods which rely heavily on the generation of an image .

第一个分支就是我们上面提到的图像定位技术，原因是它利用了数据的图像描绘方面，并且利用了主要依赖于图像产生的分析方法。

The GVF force does better than the other two forces in the segmentation of complex images with concaves. The gradient plus pressure force does better in preventing the model from crossing the slim images.［KEY WORDS］ image segmentation; active contour model; GVF; open contour model

对于简单的图像，梯度外力和梯度矢量流外力均能得到较好的分割结果；对于较复杂及边界凹陷的图像，梯度矢量流外力的分割效果明显好于其他外力；对于纤细图像应用梯度加压力的外力更容易控制模型越界的现象。

In addition, the error image was coded as a supplement to improve the quality of the decoded image.

另外对误差图像进行编码，作为解码图像的补充，提高了解码图像质量。

It then digitizes X-ray images, stores these images, performs image processing, and displays the image.

然后，将X光影像数字化，储存这些图像，进行图像处理，并显示图像。

First, in chapter one, the necessity of image compression is dissertated.

第一章首先介绍了图像压缩编码的研究意义、基本原理与方法，然后介绍了静态图像和动态图像压缩的相关国际标准。

The CT image of stomach with air-filled shows well the structure of the stomach and its distending function,and its image quality is far better than that of water-filled,the method is good for examinating stomach lesion.

胃腔充气造影的MSCT扫描图像可清晰显示胃的解剖结构和功能，图像质量明显优于饮水造影的图像质量，是种值得推广的检查胃部病变的方法。

The use of Digital image processing in this system is expatiated. Digital image denotation and pretreatment is recited, including disposing noise, emendating incline. Banknotes' histogram characteristic is analyzed.

阐述了数字图像处理在本系统中的应用，简要论述了数字图像的表示及预处理，包括图像的去噪声、倾斜校正，分析了纸币的灰度直方图特征。

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。