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Description: 把I、Q 两路信号分别作FFT ,找出频域内信号的幅度,即可算得两路分量的幅度一
％致性 把I、Q两路信号合成一个复数信号,作FFT ,对得到的频谱求镜像抑制比。-The I, Q signals, respectively, for the two FFT, to identify the range of frequency domain signal can be considered two-way range of 1 weight of the letter I, Q synthesis of two-way signal a plural signal for FFT, to obtain the spectrum for image rejection ratio.
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Size: 1024 |
Author: 林恩 |
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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: 8篇经典的英文图像检索论文。都是在IEEE上下载的，每篇价值都在25美元左右。非常值得一看。-Eight classic English image retrieval papers. IEEE are downloaded, Each values are at 25 dollars. A must see.
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Size: 2607104 |
Author: Bill |
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Description: 对IQ接收器最重要的两个参数,即I和Q两路分量之间的幅度一致性和相位正交性,可采
用如下办法计算:把I、Q 两路信号分别作FFT ,找出频域内信号的幅度,即可算得两路分量的幅度一
致性 把I、Q两路信号合成一个复数信号,作FFT ,对得到的频谱求镜像抑制比(即频域内的信号与信号镜像的幅度比) ,通过镜像抑制比和幅度一致性,可求出接收机的I和Q两路分量之间的相位正交性。-IQ receiver for the two most important parameters, namely I and Q components of two-way consistency between the amplitude and phase orthogonality may be adopted calculated using the following method: to I, Q 2 signals, respectively for FFT, to find a frequency domain signal amplitude, can be considered as two-way component caused by the range of 1 the I, Q 2 signals into one complex signal for FFT, the spectrum demand of the received image rejection ratio (ie, frequency domain signal and magnitude of the signal mirror ratio), through the image rejection ratio and extent of consistency, the receiver can be derived I and Q phase between the two-way component orthogonality.
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Size: 1024 |
Author: chinaafxp |
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Description: 基于颜色的图像检索系统,VS2008+OPENCV-Color-based image retrieval system, VS2008+ OPENCV
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Size: 1627136 |
Author: xpjandy |
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Description: 一个简单的图像配准，利用了最近邻法进行仿真-image registration
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Size: 349184 |
Author: 李涛 |
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Description: 用C++实现的图像识别和处理算法，可以识别PGM格式图像-C++, using image recognition and processing algorithms that can identify the PGM format images
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Size: 32487424 |
Author: sunbo |
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Description: Detecting and tracking dim moving point target in IR
image sequence
Fei Zhang *, Chengfang Li, Lina Shi
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Size: 257024 |
Author: massin34 |
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Description: A Particle Filter Based Algorithm for State
Estimation of Dim Moving Point Targets in IR
Image Sequence
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Size: 711680 |
Author: massin34 |
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Description: 利用改进的SIFT算法，对红外图像和可见光图像进行图像配准，效果较好。-A New Image Registration Method for ir and visible image
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Size: 595968 |
Author: 梁凯 |
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Description: 读入图像，根据图像的灰度信息，判读目标的能量特性-According to grey information of IR IMAGE,We obtain enenge information
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Size: 3431424 |
Author: zhaolirong |
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Description: 基于FPGA的直方图投影增强算法主要讲述的是红外的图像处理算法。很有借鉴意义。-Abstract：Amid uFPA therrnal imaging equipment，to obtain clear infrared image，people need to ve hetemgeneity adjust
and Blind Pixels fil1 t0 f0cal plane device．
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Size: 183296 |
Author: 陈德光 |
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Description: 傅立叶描述子是分析和识别物体形状的重要方法之一．利用基于曲线多边形近似的连续傅立叶变换方法 计算傅立叶描述子，并通过形状的主方向消除边界起始点相位影响的方法，定义了新的具有旋转、平移和尺度不变 性的归一化傅立叶描述子．与使用离散傅立叶变换和模归一化的传统傅立叶描述子相比，新的归一化傅立叶描述 子同时保留了模与相位特性，因此能够更好地识别物体的形状．实验表明这种新的归一化傅立叶描述子比传统的 傅立叶描述子能够更加高效、准确地识别物体的形状．-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.
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Size: 349184 |
Author: 劳世华 |
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Description: How to image read in matlab
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Size: 1024 |
Author: Mahfuz |
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Description: 提出了一种基于非下采样 Contourlet变换 ( NSCT)和马尔科夫随机场 (MRF)相结合的纹理图像分割算法。算法包括两
个步骤, 首先通过 NSCT实现对图像纹理特征的提取, 并使用模糊 C-均值完成对图像的初始分割 然后将初始分割结果用 MRF模型
表示, 通过贝叶斯置信传播得到图像的最终分割结果。实验结果表明, 对于纹理图像,该方法在分割错误率、 区域一致性以及边缘的
准确性方面都比传统小波变换的方法有了明显的改善。-A tex ture i m age seg m entation a l go rithm based on comb i nati on of non-down sa m pling Contourlet transfor m ( NSCT) andM arkov
rando m fi e l d model is proposed . The algorithm consists o f t wo steps . F ir st , the tex t u re f ea t ure of i m ag e is ex trac ted by NS CT, and the i m age
is seg m ented i n itia lly by fuzzy c- m eans Second , the pr i m aril y seg m ented results are expressed byMRF mode, l and the fi nal seg m entati on re-
s u lts are ga i ned v i a Bayes beli e f propag ati on . The exper i menta l resu lts show tha t this a l gor it hm is effecti ve fo r tex t ure i m age , it prov i desm uch
better res u lts i n erro r ra te o f segm enta tion , reg ion ho m ogene ity and edge accuracy than tho se of trad iti onal w ave let transf o r m ing m ethods
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Size: 216064 |
Author: jjdjjf |
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Description: image processing in farsi
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Size: 1385472 |
Author: saturn69 |
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Description: 利用图像pHash特征和颜色特征实现的图像检索程序，效果挺好。-PHash characteristics using image and color characteristics of image retrieval procedures, the effect is very good.
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Size: 139264 |
Author: yujianyi |
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Description: teaching image processing with matlab program
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Size: 3052544 |
Author: majid |
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Description: 图像复原--数字图像处理--matlab程序-Image Recovery- Digital image processing- matlab program
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Size: 61440 |
Author: 邢彩荣 |
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Description: 红外图像分析处理与融合，其包括各种算法分析，以及常用处理方法以及对实践情况的指导释疑等等。-IR image analysis processing and integration, including analysis of algorithms, and the processing method, and the common practice of guidance doubts like.
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Size: 22799360 |
Author: hui |
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