Description: 有两个vc工程文件，分别是lzc编码和解码。算法主要可以对灰度图像进行压缩和解压缩，效果比jpeg要好。其实这就是jpeg2000的原型。-two vc engineering documents were lzc encoding and decoding. This algorithm can be gray image compression, the effect is better than jpeg. This is actually the prototype JPEG2000. Platform: |
Size: 37888 |
Author:骆平 |
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Description: 这是用MATALB编写的静态图像压缩程序中的灰度转换部分-This is enriching the preparation of the static image compression process of converting part of Gray Platform: |
Size: 1024 |
Author:黄宇 |
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Description: 对原始灰度图像 Lena_gray.bmp进行图像压缩实验
1．对此图进行 8×8 DCT 变换后，分别只保留 DC系数，以及保留前 4、8、16 个变换系数(DC＋AC) ，然后再分别进行 IDCT 变换，比较结果。
2．可以使用 Matlab - Image Processing Toolbox 中的函数实现。
-gray image of the original image compression Lena_gray.bmp an experiment. This diagram 8 8 DCT, the only difference reservations DC coefficient, and the preservation of the former 4, 8 or 16 DCT coefficients (DC+ AC), and then separately IDCT transformation, the results of the comparison. 2. Using Matlab-Image Processing Toolbox to achieve the function. Platform: |
Size: 1024 |
Author:朱晓路 |
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Description: 数字图像处理实验
根据原图像的直方图，发现背景和目标的分割值大约在130左右，并将灰度图像转为二值图像，分割效果比较理想。
图像处理实验（六）图像压缩与编码
实验目的： 学习JPEG压缩编码
实验内容：
一．实现基本JPEG的压缩和编码分三个步骤：
1． 首先通过DCT变换去除数据冗余；
2． 使用量化表对DCT系数进行量化；
3． 对量化后的系数进行Huffman编码。-digital image processing experiments based on the original image histogram, found background and objectives of the divided about the value of around 130 and two gray-scale image to image, Segmentation more satisfactory results. Image processing experiments (6) Image Compression and Coding of the experiment : Learning JPEG compression coding experiment : one. Basically JPEG compression and coding in three steps : 1. First through DCT remove data redundancy; 2. Using quantitative table right DCT coefficient quantization; 3. Right quantized coefficients of Huffman coding. Platform: |
Size: 4096 |
Author:qq |
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Description: 程序代码说明
P0301：数字图像矩阵数据的显示及其傅立叶变换
P0302：二维离散余弦变换的图像压缩
P0303：采用灰度变换的方法增强图像的对比度
P0304：直方图均匀化
P0305：模拟图像受高斯白噪声和椒盐噪声的影响
P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波
P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波
P0308：图像的自适应魏纳滤波
P0309：运用5种不同的梯度增强法进行图像锐化
P0310：图像的高通滤波和掩模处理
P0311：利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理
P0312：利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理
-code P0301 : digital image data matrix display and Fourier Transform P0302 : two-dimensional discrete cosine transform image compression P0303 : using gray transform method to enhance the contrast of the image P0304 : histogram equalization P0305 : simulation images by Gaussian white noise and pepper noise impact P0306 : using 2D median filtering function medfilt2 right by the Salt and Pepper noise filtering images P0307 : MATLAB functions filter2 of noise interference filter images mean P0308 : Image Adaptive Filter WEI Na-P0309 : using five different gradient Enhancement Act for image sharpening P0310 : images of high-pass filtering and mask handling P0311 : use Butterworth (Butterworth) low-pass filter on the noise in the image smoothing P 0312 : Butterworth (Butterworth) high-pass filt Platform: |
Size: 10240 |
Author:xueke |
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Description: 程序代码说明
P0301：数字图像矩阵数据的显示及其傅立叶变换
P0302：二维离散余弦变换的图像压缩
P0303：采用灰度变换的方法增强图像的对比度
P0304：直方图均匀化
P0305：模拟图像受高斯白噪声和椒盐噪声的影响
P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波
P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波
P0308：图像的自适应魏纳滤波
P0309：运用5种不同的梯度增强法进行图像锐化
P0310：图像的高通滤波和掩模处理
P0311：利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理
P0312：利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理
-code P0301 : digital image data matrix display and Fourier Transform P0302 : two-dimensional discrete cosine transform image compression P0303 : using gray transform method to enhance the contrast of the image P0304 : histogram equalization P0305 : simulation images by Gaussian white noise and pepper noise impact P0306 : using 2D median filtering function medfilt2 right by the Salt and Pepper noise filtering images P0307 : MATLAB functions filter2 of noise interference filter images mean P0308 : Image Adaptive Filter WEI Na-P0309 : using five different gradient Enhancement Act for image sharpening P0310 : images of high-pass filtering and mask handling P0311 : use Butterworth (Butterworth) low-pass filter on the noise in the image smoothing P 0312 : Butterworth (Butterworth) high-pass filt Platform: |
Size: 669696 |
Author:tiantian |
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Description: 数字图像矩阵数据的显示及其傅立叶变换
二维离散余弦变换的图像压缩
采用灰度变换的方法增强图像的对比度
直方图均匀化
模拟图像受高斯白噪声和椒盐噪声的影响
采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波
用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波
图像的自适应魏纳滤波
运用5种不同的梯度增强法进行图像锐化
图像的高通滤波和掩模处理
用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理
利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理
-digital image data matrix display and its Fourier transform two-dimensional discrete cosine transform image compression using gray change The method for enhancing the contrast of the image histogram equalization simulated images by white Gaussian noise and Impulse noise impact 2D Median filter function medfilt2 right by the Salt and Pepper noise interference with the image filtering MATLAB functions fi lter2 right by the noise of image filtering images using adaptive filtering Weiner five different gradient growth Intensity image sharpening images and high-pass filter mask Processing Butterworth (Butterworth) lowpass Filter by the noise of the image smoothing use Butterworth (Butterworth) high-pass filter filter on the image sharpening Platform: |
Size: 10240 |
Author:王晓明 |
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Description: P0301：数字图像矩阵数据的显示及其傅立叶变换
P0302：二维离散余弦变换的图像压缩
P0303：采用灰度变换的方法增强图像的对比度
P0304：直方图均匀化
P0305：模拟图像受高斯白噪声和椒盐噪声的影响
P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波
P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波
P0308：图像的自适应魏纳滤波
P0309：运用5种不同的梯度增强法进行图像锐化
P0310：图像的高通滤波和掩模处理
P0311：利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理
P0312：利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理-P0301 : digital image data matrix display and Fourier Transform P0302 : Two-dimensional discrete cosine transform image compression P0303 : Gray used a new method to enhance the contrast of the image P0304 : histogram equalization P0305 : Simulation images by white Gaussian noise and Impulse noise impact P0306 : 2D median filtering function medfilt2 right by the Salt and Pepper image noise filtering P0307 : MATLAB filter2 the function of noise interference by the image filtering P0308 : Image Adaptive Filter Weiner P0309 : use five different gradient Enhancement Act for image sharpening P0310 : Images of the high-pass filtering and mask handling P0311 : use Butterworth (Butterworth) low-pass filter to noise interference by the image smoothing P 0312 : Butterworth (Butterworth) high-pass fi Platform: |
Size: 11264 |
Author:zhouyinye |
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Description: MATLAB源码，P0301：数字图像矩阵数据的显示及其傅立叶变换 P0302：二维离散余弦变换的图像压缩 P0303：采用灰度变换的方法增强图像的对比度 P0304：直方图均匀化 P0305：模拟图像受高斯白噪声和椒盐噪声的影响 P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波 P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波 P0308：图像的自适应魏纳滤波 P0309：运用5种不同的梯度增强法进行图像锐化 P0310：图像的高通滤波和掩模处理 P0311：利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理 P0312：利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理-MATLAB source code, P0301 : Digital image data matrix display and Fourier Transform P0302 : Two-dimensional discrete cosine transform image compression P0303 : Gray used a new method to enhance the contrast of the image P0304 : histogram equalization P0305 : Simulation images by white Gaussian noise and Impulse noise impact P0306 : 2D median filtering function medfilt2 right by the Salt and Pepper image noise filtering P0307 : MATLAB filter2 the function of noise interference by the image filtering P0308 : Image Adaptive Filter Weiner P0309 : use five different gradient Enhancement Act for image sharpening P0310 : Images of the high-pass filtering and mask handling P0311 : use Butterworth (Butterworth) low-pass filter to noise interference by the image smoothing P 0312 : Butterworth (Butte Platform: |
Size: 540672 |
Author:钟小丽 |
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Description: 余弦变换压缩，用于图像压缩，压缩比高，且压缩后图像质量仍然很好。适用于灰度图象。-Cosine Transform compression for image compression, compression ratio, and compressed image quality is still good. Apply to the gray-scale image. Platform: |
Size: 34816 |
Author:张弛 |
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Description: P0301：数字图像矩阵数据的显示及其傅立叶变换
P0302：二维离散余弦变换的图像压缩
P0303：采用灰度变换的方法增强图像的对比度
P0304：直方图均匀化
P0305：模拟图像受高斯白噪声和椒盐噪声的影响
P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波
P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波
P0308：图像的自适应魏纳滤波
P0309：运用5种不同的梯度增强法进行图像锐化
P0310：图像的高通滤波和掩模处理
P0311：利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理
P0312：利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理-P0301 : digital image data matrix display and Fourier Transform P0302 : Two-dimensional discrete cosine transform image compression P0303 : Gray used a new method to enhance the contrast of the image P0304 : histogram equalization P0305 : Simulation images by white Gaussian noise and Impulse noise impact P0306 : 2D median filtering function medfilt2 right by the Salt and Pepper image noise filtering P0307 : MATLAB filter2 the function of noise interference by the image filtering P0308 : Image Adaptive Filter Weiner P0309 : use five different gradient Enhancement Act for image sharpening P0310 : Images of the high-pass filtering and mask handling P0311 : use Butterworth (Butterworth) low-pass filter to noise interference by the image smoothing P 0312 : Butterworth (Butterworth) high-pass fi Platform: |
Size: 10240 |
Author:大海 |
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Description: image compression using btc algorithm. matlab program. This function accepts an image(color or gray) and compresses it using the block truncation coding. -btc using image compression algorithm. Ma tlab program. This function accepts an image (c olor or gray) and compresses it using the block t runcation coding. Platform: |
Size: 1024 |
Author:jason.. |
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Description: matlab图象处理中非常有用的程序，RGB图象转化为灰度图象的程序，在运用中很有效-Matlab image processing is very useful procedure, RGB images into gray-scale images procedures, in the use of very effective Platform: |
Size: 1024 |
Author:李里 |
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Description: This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
-This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
Platform: |
Size: 95232 |
Author:Ho Joon Lee |
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Description: The following implementation steps have been made for the devised algorithm, which is based on 2D-wavelet.
1. Reading an image of either gray scale or RGB image.
2. Converting the image into grayscale if the image is RGB.
3. Decomposition of images using wavelets for the level N.
4. Selecting and assigning a wavelet for compression.
5. Generating threshold coefficients using Birge-Massart strategy.
6. Performing the image compression using wavelets.
7. Computing and displaying the results such as compressed image, retained energy and Zero coefficients.
8. Decompression the image based on the wavelet decomposition structure.
9. Plotting the reconstructed image.
10. Computing and displaying the size of original image, compressed image and decompressed image. Platform: |
Size: 1024 |
Author:fer |
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Description: 对原始灰度图像进行图像压缩，对此图进行 8×8 DCT 变换后，分别只保留 DC系数，以及保留前 4、8、16 个变换系数(DC＋AC) ，然后再分别进行 IDCT 变换
-The original gray image compression, this map for 8 × 8 DCT transform, respectively, to retain only the DC coefficient, and to retain the former 4,8,16 months transform coefficients (DC+ AC), and then separately IDCT transform Platform: |
Size: 1024 |
Author:potato |
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Description: 对原始灰度图像 Lena_gray.bmp进行图像压缩实验 1．对此图进行 8×8 DCT 变换后，分别只保留 DC系数，以及保留前 4、8、16 个变换系数(DC＋AC) ，然后再分别进行 IDCT 变换，比较结果。 2．可以使用 Matlab - Image Processing Toolbox 中的函数实现。-gray image of the original image compression Lena_gray.bmp an experiment. This diagram 8 8 DCT, the only difference reservations DC coefficient, and the preservation of the former 4, 8 or 16 DCT coefficients (DC+ AC), and then separately IDCT transformation, the results of the comparison. 2. Using Matlab-Image Processing Toolbox to achieve the function. Platform: |
Size: 3072 |
Author:嘟嘟 |
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Description: 图像处理(image processing)，用计算机对图像进行分析，以达到所需结果的技术。又称影像处理。图像处理一般指数字图像处理。数字图像是指用工业相机、摄像机、扫描仪等设备经过拍摄得到的一个大的二维数组，该数组的元素称为像素，其值称为灰度值。图像处理技术一般包括图像压缩，增强和复原，匹配、描述和识别3个部分。(Processing (image), a technique that uses computers to analyze images to achieve desired results. Also called image processing. Image processing usually refers to digital image processing. A digital image is a large two-dimensional array taken by an industrial camera, a camera, a scanner, etc. the element of the array is called a pixel, and its value is called a gray value. Image processing technology generally includes image compression, enhancement and restoration, matching, description and recognition of 3 parts.) Platform: |
Size: 22810624 |
Author:厚月
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Search - gray compression matlab