Description: 在Freeman链码基础上,提出一种新的形状描述编码:最小和统计方向码. 该方法对图像平移、旋转具有不变性的优点,对尺度变换有成比例特点. 提出了相应的形状匹配算法:方向熵法度量最小和统计方向码描述的形状相似度. 仿真试验验证了这种形状检索方法的有效性与可行性.-In the Freeman chain code based on a new shape description coding: the direction of the smallest and statistical code. The method of image translation, rotation invariance with the advantages of scale transformation on the proportion of the characteristics of success. The shape of the corresponding matching algorithm : the direction of the smallest measure of entropy and statistics to describe the shape of the direction of code similarity. simulation test to verify that the effectiveness of shape retrieval methods and feasibility. Platform: |
Size: 448512 |
Author:焦亚民 |
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Description: 对于细胞图像序列中多目标的追踪是细胞运动研究中的难点，针对高密度细胞图像中细胞运动的复杂性，本文提出一个细胞分割和追踪的系统。在细胞分割部分，针对实验所用细胞图像序列的特点，本文分别采用了不同的分割方法。在基本的细胞分割后，由于得到的分割图像存在着一些粘连细胞，为了将之分离，采用了基于Freeman code法对细胞轮廓进行跟踪编码。根据编码所得的链码特征分析细胞的轮廓形态，找出粘连细胞图像中的凹角点，再将凹角点进行分组配对完成粘连细胞的分离。在追踪部分，针对细胞的运动特性，将细胞分为惰性细胞和非惰性细胞，分别采用区域重叠法和拓扑约束法进行追踪。针对高密度细胞追踪中由于细胞密集加上细胞分裂很容易导致错误追踪的问题，本文提出将面积项引入实现追踪的拓扑约束条件中，对原方法进行改进，有效的解决了这一问题，有助于提高追踪效率，特别是对于细胞密度比较大，且分裂频繁的细胞图像效果明显。另外，本文提出根据细胞数量设置产生图的距离门限，使算法的适用性更强 。-For cells in image sequences multi-objective tracking is cells, the difficulty in the studies of cellular density cell image motion complexity, this paper puts forward a cell division and tracking system. In the cell division, according to the characteristics of image sequence cells, this paper adopts a different method. In the basic cell division, because the segmentation image exists some adhesion to the separation of cells, using the method of Freeman code based on contour tracking code. According to the characteristics of the chain code coding analysis, find the outline of cells in the cell adhesion, concave edges concave angular point pairs finished adhesion cell group. In part, according to the characteristic and cells
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Size: 3523584 |
Author:刘颖 |
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Description: 基于Freeman 链码的直线识别方法，该文将Freeman 针对直线编码提出的3 个约束条件应用到直线的识别之中，取得了较好的效果。
通过两次直线段的合并操作较好地解决了短线段过多的问题-Freeman chain code based on the linear identification method, the paper will propose Freeman coding for the three linear constraints being applied to the line identification, to obtain good results. Straight line through the merger of two operating segments to better solve the problem of excessive short-term Platform: |
Size: 502784 |
Author:刘春来 |
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Description: 对二值图像边界进行跟踪，对边缘进行判断，然后沿着边缘进行跟进- C = CONTOUR_FOLLOWING(BW) takes BW as an input. BW is a binary array
containing the image of an object ( 1 : foreground, 0 : background). It
returns a circular list (N x 2, C(1,:)=C(end,:)) of the
(row,column)-coordinates of the object s contour, in the order of
appearence (This function was inspired from the freeman contour coding
algorithm). Platform: |
Size: 4096 |
Author:易想 |
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Description: 链码技术被广泛应用是因为它能以较少的数据来贮存较多的信息。用链码来表示线条模式的方法是由 Freeman 首先提出来的。Freeman 链码至今仍然是一个被广泛使用的最主要的链码编码方法。 -Chain code technology is widely used because it can be less data to store more information. With a chain code representation of the line model it is first proposed by the Freeman. Freeman chain code is still the main chain coding method is widely used. Platform: |
Size: 1024 |
Author:宝贝 |
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