Description: 基于链码提取的傅立叶描述子,以及傅立叶反变换对图象边界进行重建
-chain code extraction based on Fourier descriptors, and the Fourier transform of image reconstruction border Platform: |
Size: 1024 |
Author:ff |
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Description: 在matlab环境下，用傅立叶描述子对图像作形状描述的matlab代码-In matlab environment, using Fourier descriptors to describe the shape of the image for the matlab code Platform: |
Size: 2048 |
Author:zlyzzf |
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Description: 关于傅立叶描述子的GUI界面，本程序可计算目标的一种形状描述符——轮廓傅立叶描述子。并可通过傅立叶描述符重构目标轮廓。-On the Fourier descriptors of the GUI interface, this program objectives computable descriptor of a shape- the outline of Fourier descriptors. Via Fourier reconstruction of the target outline descriptor. Platform: |
Size: 26624 |
Author:xiaoqinkun |
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Description: 利用傅里叶描述子进行物体形状分析：
对于一个物体的边缘即形状来说，可将其看作是平面在空间坐标系下的点集构成的闭合曲线，这样就可用周期函数来描述其外形，可以进行离散傅里叶变换，将图像由空域表示转换到频域表示，变换后的函数可由傅里叶变换系数来描述。对于数字图像的频谱来说，低频分量的分布反映了图像主体的基本形状，高频分量的分布反映图像的细节-Fourier descriptors for object shape analysis: For the edge of an object or shape, it can be regarded as the plane in the space coordinates of the point set consisting of closed curves, so that periodic function can be used to describe its shape , can be discrete Fourier transform, the image from the airspace, said the conversion to the frequency domain that function can be transformed to describe the Fourier transform coefficients. For digital images of the spectrum, the distribution of low-frequency components reflect the basic shape of the main images, high-frequency component of the distribution reflects the image details Platform: |
Size: 11264 |
Author:吴亚鹏 |
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Description: 这是一个自编的应用边缘提取和傅立叶描述子来进行数字的表述和识别-This is a self-application of edge detection and Fourier descriptors for the number of statements and identification Platform: |
Size: 407552 |
Author:爱子 |
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Description: 本源码为利用光流法提取视频关键帧的matlab程序实现，也是本文基于内容的视频检索的论文所写的代码，需要的可以参考！-The source for the use of optical flow extracted keyframe Videos matlab program implementation, but also this article content-based video retrieval dissertation written code, can refer to the required! Platform: |
Size: 15360 |
Author:ttt |
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Description: 状是含有高层语义信息的视觉特征，在基于内容的图像检索及图像识别中具有重要的应用价值。有很多种描述子可以描述图像的形状特征，傅立叶描述子可以把二维的图像轮廓信息简化成一维问题进行处理，应用非常广泛。然而自然图像的形状特征通常是杂乱的，有噪声的，提出了一种图像预处理方法，得到净化的形状图像，通过实验研究傅立叶描述子算法提取形状特征的效果。-Abstract Shape is a visual feature which contains intrinsic high-level semantics, and has a great application value in CBIR(Content-Based Image Retrieval) and IR(Image Recognition). There are many descriptors for shape feature. Fourier descriptor predigests 2-demensional image information to 1-demensional signal and be used widely. In fact, the shape of natural image is often messy and noisy. So, this paper proposes a preprocessing method which can clean the noisy shape image, and then researches and analyses the shape feature extraction with Fourier descriptor method with an experiment.
Keywords Shape, Fourier Descriptor, Feature Extraction, CBIR(Content-Based Image R
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Size: 102400 |
Author:倪晓雷 |
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Description: 图像分割，具体算法参考一下论文
Zhi-Gang Tan， Xiao-Chen Heand Nelson H. C. Yung
A Novel Merging Criterion Incorporating Boundary Smoothness and Region Homogeneity for Image Segmentation-Abstract
A novel joint region merging criterion combining region homo-geneity and boundary smoothness is proposed. Previous watershed segmentation method which utilizes region homogeneity or edge integrity or both gives good results in some cases. However, for complex scenes such as images of a vehicle with irregular roadside objects reflected on the window panes, it tends to give undesired segmentation results with region boundaries not residing on real physical boundaries. Aiming at improving the segmentation of these complex scenes, we propose the incorporation of an additional measure of boundary smoothness into a new joint criterion. Based on this, an affine transform invariant measure of the smoothness of boundaries is developed, which is the equivalent width of the energy distribution function over frequencies, obtained from Fourier descriptors of the boundary. Experimental results and evaluation are presented in this paper to demonstrate the merits of the proposed method.
Key Platform: |
Size: 9216 |
Author:Jack Tan |
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Description: 傅里叶描述子用来描述和识别图像中有边缘的物体形状，本程序基于MATLAB，测试可用-Fourier descriptor is to analyze and identify the important objects in the shape of one of the methods. The use of polygon-based curve near Continuous Fourier transform method like Fourier descriptors, and through the main direction of the shape to eliminate the border from Phase of the influence of starting point, define a new rotation, translation and scale invariance of the normalized Fourier Ye descriptor. Platform: |
Size: 3072 |
Author:杨占 |
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Description: 利用Matlab软件，具体实现对于给定图片的边缘提取、链接，同时计算计算图像中每个物体的边界长度、面积、矩，投影、近似圆形的离心率、紧致度和边界的傅立叶描述子。-Using Matlab software, the specific implementation for a given image edge extraction, linking, also calculated for each object in the calculation of the image boundary length, area, moments, projections, nearly circular eccentricity, compactness and boundaries of the Fourier descriptors . Platform: |
Size: 431104 |
Author:郭卉 |
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Description: 实现图像边缘的傅里叶描述子，可用于边缘检测，形状分析。-Matlab achieve image edge of the Fourier descriptors, can be used for edge detection, shape analysis. Platform: |
Size: 4096 |
Author:JUN |
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Description: 傅里叶描述子的matlab 代码,包含了一个简单的实例程序,简单明了.-the matlab code for Fourier descriptors , including a simple example program, simple and clear. Platform: |
Size: 15360 |
Author:cjz510 |
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Description: 根据傅里叶描述子进行轮廓匹配，开发环境：matlab ，解压放到matlab中即可使用-Contour matching based on Fourier descriptors, the development environment: matlab, unzip into matlab in to use! ! Platform: |
Size: 11264 |
Author:xuchanglong |
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Description: 利用傅里叶描述子复原图像
傅里叶描述子逆变换重建边界
对边界进行二次取样源码
进行边缘提取，得到包络数据信息等等。。(Restoration of images using Fourier descriptors
Fu Liye descriptors, inverse transform, reconstruction boundary
Two sampling sources for the boundary
Edge extraction, envelope data, and so on..) Platform: |
Size: 394240 |
Author:Harold
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Search - Fourier descriptors matlab