Description: Matlab实现图像压缩与重构步骤
① 对图像进行小波分解，得到第一层分解的低频系数和高频系数。
② 保留低频系数，对高频系数进行基于神经网络的矢量量化编码，达到压缩。
③ 根据码书以w还原高频系数
④ 根据保留的低频系数和还原的高频系数重构图像
-Matlab realization image compression and the heavy
construction step (1) pair of picture carries on the wavelet to
decompose, obtains the first decomposition the low frequency
coefficient and the high frequency coefficient. (2) Retains the low
frequency coefficient, carries on to the high frequency coefficient
based on the nerve network vector quantification code, achieves the
compression. (3) To w returns to original state the low frequency
coefficient according to the code book and the return to original
state high frequency coefficient heavy composition which the high
frequency coefficient (4) basis retains likes Platform: |
Size: 19961 |
Author:王危结 |
Hits:
Description: 将多幅图像按序列读入组成连续的序列图像并可随意的读取任何一幅图像-according to a number of image sequences read into the composition of continuous image sequences can be read any arbitrary one image Platform: |
Size: 3072 |
Author:叶军 |
Hits:
Description: Matlab实现图像压缩与重构步骤
① 对图像进行小波分解，得到第一层分解的低频系数和高频系数。
② 保留低频系数，对高频系数进行基于神经网络的矢量量化编码，达到压缩。
③ 根据码书以w还原高频系数
④ 根据保留的低频系数和还原的高频系数重构图像
-Matlab realization image compression and the heavy
construction step (1) pair of picture carries on the wavelet to
decompose, obtains the first decomposition the low frequency
coefficient and the high frequency coefficient. (2) Retains the low
frequency coefficient, carries on to the high frequency coefficient
based on the nerve network vector quantification code, achieves the
compression. (3) To w returns to original state the low frequency
coefficient according to the code book and the return to original
state high frequency coefficient heavy composition which the high
frequency coefficient (4) basis retains likes Platform: |
Size: 19456 |
Author:王危结 |
Hits:
Description: 以rice．tif为图像实例，介绍用形态学方法对灰度图像进行处理与分析的技术要点，即对灰度图像进
行如下操作：去除图像的不均匀背景；用设置阈值的方法(thresholding)将结果图像转换成二值图像；通过成分标记(components labeling)返回图像中的目标对象属性，并计算目标对象的统计数字特征。-to rice. Tif images for example, introduces the morphology of gray image processing and analysis techniques, that the gray image proceed as follows : Removal of uneven background image; by setting the threshold value method (thresholding) will be converted into images results binary image; through the composition tags (components labeling) to image targets attribute, and calculate the statistics target characteristics. Platform: |
Size: 1024 |
Author:何子鸣 |
Hits:
Description: 菱形搜索算法是在四步搜索算法的基础上采用菱形搜索路线得到的一种算法。它充分考虑了现实中的物体在水平和垂直这两个方向运动的概率比较大，图像的频谱多呈菱形。菱形搜索算法采用了两种搜索模式：大菱形搜索模式（LDSP）和小菱形搜索模式（SDSP）[6]。LDSP有一个中心点和它周围的8个搜索点构成，这九个点组成一个菱形，SDSP由5个搜索点构成-Diamond search algorithm in the four-step search algorithm based on the use of diamond-shaped search route received an algorithm. It takes full account of the reality of the objects in the horizontal and vertical direction of movement of both the probability of relatively large, mostly diamond-shaped image of the spectrum. Diamond search algorithm uses two search modes: large diamond search pattern (LDSP) and small diamond search pattern (SDSP) [6]. LDSP there is a focal point and its surrounding eight points, english composition, the nine points of a diamond, SDSP by five points constitute english Platform: |
Size: 2048 |
Author:赵光 |
Hits:
Description: 基于LSB的图像中数据加密隐藏算法程序
图像的组成无非是一些字符串或者一些字节组成的字符串，然而，每一个字节数据位的重要度并不是一样的，两个相邻字节往往只有低位是不一样的。例如：00100110和00100111代表了两个不同渐变度的红色，但是就人眼是分辨不出来的。最低有效位LSB算法，就是利用这一点，达到图像压缩，或者数字水印的功能。 -LSB of the image-based data encryption to hide the image composition algorithm procedure is nothing more than some number of bytes or string composed of string, however, one byte for each data bit is not an important degree of the same, and two adjacent words section, usually only low level is not the same. For example: 00100110 and 00100111 represent the gradient of two different degrees of red, but on the human eye is not out to tell. Least significant bit LSB algorithm, is to take advantage of this point, to achieve image compression, or digital watermark feature. Platform: |
Size: 248832 |
Author:aaa |
Hits:
Description: 基于非负矩阵分解（NMF）的人脸特征提取算法，NMF基本思想是找到一个线性子空间W，使的构成子空间的基本图像的像素点都是正值，而且人脸图像在子空间上的投影系数也是正数-Non-negative Matrix Factorization (NMF) of facial feature extraction algorithm, NMF basic idea is to find a linear sub-space W, so that the composition of sub-space of the basic image pixels are positive, and face image in the sub-space projection coefficient is positive Platform: |
Size: 1024 |
Author:李伟 |
Hits:
Description: 用matlab实现color moments算法，先把rgb图像转换到HSV空间，然后计算每个分量的一二三阶矩，最后组成9维向量进行比较。-Using color moments algorithm matlab realize, first convert rgb images to HSV space, and then calculated for each component of the 123-order moments, the final composition of 9-dimensional vector for comparison. Platform: |
Size: 1024 |
Author:杨红菊 |
Hits:
Description: 图像的组成无非是一些字符串或者一些字节组成的字符串，然而，每一个字节数据位的重要度并不是一样的，两个相邻字节往往只有低位是不一样的。例如：00100110和00100111代表了两个不同渐变度的红色，但是就人眼是分辨不出来的。最低有效位LSB算法，就是利用这一点，达到图像压缩，或者数字水印的功能。-The composition of the image is nothing more than some number of bytes or string composed of string, however, one byte for each data bit is not an important degree of the same, often only two adjacent low-byte is not the same. For example: 00100110 and 00100111 represent the gradient of two different degrees of red, but on the human eye is not out to tell. Least significant bit LSB algorithm, is to take advantage of this point, to achieve image compression, or digital watermark feature. Platform: |
Size: 322560 |
Author:xlz |
Hits:
Description: 摘要:为了提高图像复原算法的性能 ,提出了一种改进的奇异值分解法估计图像的点扩散函数。从图像的退化离散模型
出发 ,对图像进行逐层分块奇异值分解 ,并自动选取奇异值重组阶数以减少噪声对估计的影响。利用理想图像奇异值向
量平均能谱指数模型 ,估计点扩散函数奇异值向量的频谱 ,再反傅里叶变换得到其时域结果。实验结果表明 ,该方法能
在不同信噪比情况下估计成像系统的点扩散函数 ,估计结果比原有估计方法有所提高 ,有望为图像复原算法的预处理提
供一种有效的手段。-Abstract : To improve the performance of image restoration algorithms , a modified Singular Value De2
[ ] [ ]
composition SVD method was proposed to estimate the Point Spread Function PSF of an imaging
system. Using the discrete image degradation model , a block2based SVD filter scheme was applied for
the image denoising with an automatically determined singular value rank. After the spectra of PSF
singular vectors were estimated under an exponential model for the averaged spectra of un2degraded
image singular vectors , the IFFT was used to get the time2domain estimation of the PSF. The experi2
mental results show that this proposed method can be applied to estimate the PSF of the imaging sys2
tem under a wide SNR range and its performance is better than the original method. It may be used as
an effective method for the image preprocessing in image restoration problems.
[ ]
Key words: image restoration Point Spread Function PSF block2based Singular Value Decomposi2 Platform: |
Size: 476160 |
Author:zy |
Hits:
Description: 用小波变换的方法进行图像压缩、去噪、分解、合成的matlab程序。-Method using wavelet transform for image compression, denoising, decomposition and composition of the matlab program. Platform: |
Size: 4096 |
Author:wangjiayin |
Hits:
Description: matlab实现图像分割，程序处理了压缩文件中的图片，将由灰度值构成的图转换成完全由黑白构成的图。-matlab image segmentation, handles the compressed file picture, gray scale value diagram will be converted to composed entirely of black and white composition. Platform: |
Size: 465920 |
Author:Lisa |
Hits:
Description: 基于特征的视觉里程计系统主要由特征检测与跟踪模块以及位姿计算模块两部分组成.为分析车载视觉里程计系统中引入车辆运动学约束的位姿计算算法性能,根据摄像机成像及视觉几何学原理,采用Matlab结合车辆动力学仿真软件CarSim建立车载视觉里程计仿真平台.该仿真平台由车辆运动仿真模块、成像仿真模块、数据显示与分析模块组成,仿真平台的测试对象为视觉里程计的位姿估计算法模块.该仿真平台充分考虑车载视觉定位系统的运动特性,为研究车辆运动学约束在视觉里程计系统中的应用提供新的思路和工具.对提出的一种全新的基于车辆运动学约束的位姿估计内层算法,在此仿真平台上进行性能验证.仿真结果表明,该算法在计算精度与效率上都能够满足实时车载视觉定位的要求.-Mainly by the feature detection and tracking module and pose calculation module composed of two parts based on visual odometry system features. In order to analyze the visual odometry system onboard the vehicle kinematic constraints introduced pose calculation algorithm performance, according to the camera image and visual geometry principle, combined with the use of vehicle dynamics simulation software Matlab CarSim establish visual odometry vehicle simulation platform. The simulation platform by the vehicle motion simulation module, imaging simulation module, the data shows the composition and analysis module, the test object simulation platform for visual odometry bit Pose estimation module. The simulation platform fully into account the motion characteristics of automotive vision positioning system, vehicle kinematic constraints apply to study in visual odometry system to provide new ideas and tools for a new vehicle based on the kinematics proposed inner constraints pose estimatio Platform: |
Size: 1504256 |
Author:zzz |
Hits:
Description: MATLAB利用教学和工程实际应用的需要，从实用角度出发，循序渐进地讲述MATLABI GUI设计，并通过大量的设计实例和典型应用实例，帮助读者掌握从基本的数据可视化，到高级的交互式图形界面设计技术。("Proficient in MATLAB GUI design (second edition)" introductory, design improvement and integrated application of three articles, gradually and systematically.Basic introduction to MATLAB and summary of GUI programming, 2 d and 3 d drawing;Designed to improve introduction MATLABI graphic processing, light and transparent color, animation design, image display technology, graphic printing and exporting, handle graphics object, composition and structure of the GUI, GUI basic and advanced design;Integrated application of introduction to GUI design in higher mathematics, university physics and the application of electrotechnics.) Platform: |
Size: 15767552 |
Author:拖把
|
Hits:
Search - Image composition matlab