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这是用提升小波变换与嵌入零树编码实现的256色灰度BMP图像压缩与解压缩的程序。-wavelet transform and upgrade embedded zerotree coding to achieve the 256-color grayscale BMP image compression and decompression procedures.
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%TVDENOISE Total variation grayscale and color image denoising % u = TVDENOISE(f,lambda) denoises the input image f. The smaller % the parameter lambda, the stronger the denoising. % % The output u approximately minimizes the Rudin-Osher-Fatemi (ROF)
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使用Matlab编程实现发送端信源编码(图像压缩)和接收端信源解码(图像重建),其中的编解码算法可采用基于DCT变换的JPEG图像压缩标准;测试图像加噪,然后对去噪后的图像进行压缩与重建,分析压缩性能;研究基于下采样和内插的图像压缩算法;可将8bit/pixel灰度图像扩展至24bit/pixel彩色图像,或者采用无损压缩算法对图像压缩。-Sender using the Matlab programming source coding (image compression) and the r
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图像拼接,使用此代码可以方便的将一幅灰度图像或者彩色图像进行横向或者纵向拼接-Image mosaic, the use of this code can easily be a grayscale image or color image mosaic of horizontal or vertical
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灰度图转换,可以把彩色图片转换为灰度图片。并进行计算-Grayscale conversion, color images can be converted to gray-scale image. And calculated
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将K均值算法用于图像分割,输入的是彩色图像,转换为灰度图像进行分割,输出结果为灰度图像.利用灰度做为特征对每个像素进行聚类,由于光照等原因,有时应该属于一个物体的像素,其灰度值也会有很大的差别,可能导致对该像素的聚类发生错误.在分割结果中,该物体表面会出现一些不同于其它像素的噪声点,因此,算法的最后,对结果进行一次中值滤波,以消除噪声,达到平滑图像的作用-The K means algorithm for image segmentation, the input is a color imag
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基于DCT变换的图像压缩,分别给出了灰度图和真彩图的压缩方法。-DCT-based image compression, respectively, are given grayscale and true color pictures of the compression method.
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基于奇异值分解的图像压缩。分别给出了灰度及RGB真彩图的压缩代码。
-Based on singular value decomposition of the image compression. Are given respectively grayscale and RGB true color pictures of the compression code.
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基于高斯滤波器的图像压缩算法。可以处理真彩图和灰度图,相当实用。-Gaussian filter based on image compression algorithms. Can handle true color pictures and grayscale, quite useful.
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用matlab实现的一个就彩色图像转换为灰度图像的程序,程序很简单-Using matlab to achieve a color image converted to grayscale on the image process, the program is very simple
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本文算法是将24 位真彩图的亮度分量分块
DCT ,然后利用DCT 量化系数的奇偶特性嵌入8
位灰度水印图,并通过PN 序列加密来保证水印的
安全性。算法中,将灰度图像转换为二进制数据
流,置乱后扩频调制,隐藏在宿主DCT 系数量化值
中,提取时不需要宿主信号,实现水印信号的盲提
取。-This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantiza
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通过matlab软件实现彩色图像直接灰度化,再进行边缘检测-Matlab software through direct grayscale color image, then the edge detection
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彩色图像转灰度图像的三种算法,matlab实现-Color image to grayscale image of the three algorithms, matlab implementation
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利用源彩色图像给目标灰度图像上色,输入一幅彩色图像和一幅待上色的灰度图像,利用彩色图像中的彩色信息为该灰度图像上色-transfering color to grayscale image
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TVDENOISE Total variation grayscale and color image denoising-TVDENOISE Total variation grayscale and color image denoising
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MATLAB实现huffman编码,可以自由改变输入-Convert a color image into a grayscale
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图像预处理的一些简单程序代码,其中包括灰度化、彩色均衡化以及滤波处理。-Some simple image pre-processing program code, including grayscale, color equalization and filtering.
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对数字图像进行彩色图像或索引图像转化为灰度图像,二值化,边缘检测等预处理操作-Digital image or a color image is converted to grayscale images indexed image, binarization, edge detection, pre-processing operations
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程序功能:模拟DCT编码解码过程,生成带“块效应”的图像
实验图片:lena.jpg(512*512)
步骤:彩色图像→灰度图像→DCT→量化→反量化→IDCT→重构图像并保存- Program features: Analog DCT encoding and decoding process, generated with the " block effect" image Experimental Image: lena.jpg (512* 512)
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用matlab调用摄像头,调用的是电脑自带的摄像头,运行之后出现一个摄像头窗口(未进行二值化灰度处理,因此是正常彩色图像。)(Using MATLAB to call the camera, it calls the camera that comes with the computer. After running, there is a camera window (no two value grayscale processing), so it's a normal color imag
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