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The program is used to realise the histogram, quantization and filtering of the image.
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图像压缩编码,dct变换,量化,
Z字形扫描 行程编码,Image compression, dct transform, quantization, Z-shaped scan length encoding
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基于 DCT(离散余弦变换 )域的信息隐藏算法是目前应用最广的变换域算法 ,此类算法的最大不足是嵌信息量小。通过分析 DCT域隐藏算法隐藏容量少的原因 ,提出了一种大容量的 DCT域信息隐藏算法。算法首先对载体图像进行频谱均匀化处理 ,然后对图像进行全局 DCT变换 ,并将隐藏信息嵌入到载体图像的低频 DCT系数上 ,信息嵌入采用分段量化的方法实现 ,提取隐藏信息时不需要原始载体图像。实验结果表明 ,该算法的嵌入容量大 ,不可感知性好。-Based on DCT (discrete cosine
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本文首先介绍了静态图像压缩(JPEG)编码算法的基本原理、压缩的实现过程及其重要过程的离散余弦变换(DCT)算法的实现原理及软件实现的例程,其次着重介绍了压缩过程中的DCT、量化和编码三个重要步骤的实现原理。-This paper describes the static image compression (JPEG) coding algorithm is the basic principle of compression process of the implementation pro
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基于空间域图象变换的矢量量化图象编码方法----论文-Space-based transform domain image vector quantization image coding method---- Papers
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jpeg_0.77.zip
JPEG压缩编码系统源代码
mkou_1.0.zip
图案抖动技术处理系统源代码
touch_1.01.zip
图象边沿检测-提取-轮廓跟踪算法源代码
xchange_1.03.zip
图象几何变换算法源代码
sima_1.07.zip
图象模板匹配算法源代码
mghe_0.23.zip
图象平滑处理系统源代码
wgttut_5.0.zip
图形色彩量子化及材质压缩程序源代码
-jpeg_0.77.zipJPEG
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图像DCT编码压缩,经DCT变换,量化,编码,然后再解码。-DCT coding image compression, the DCT transform, quantization, coding, and then decode.
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由Nam Phamdo编写的基于LBG的矢量量化程序,对于语音的压缩很有意义,也可以用在视频和图像的压缩中。-Nam Phamdo prepared by LBG-based vector quantization process, for voice compression meaningful, but also can be used in video and image compression.
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一种二值图象无损压缩算法
南京理工大学电光学院
【摘 要】利用稀疏矩阵和差分编码对二色图像进行压缩保存,在通过图像的0,1矩阵建立,矩阵一维化,差分量化编码,写文件来压缩。在电子档案存储,CAD制图信息化存储有极高的应用价值。
【关键字】计算机 二值图像 稀疏矩阵 无损压缩 编码
-A binary image lossless compression algorithm for electro-optic Nanjing University of Technology an
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图像压缩传输过程中减少量化干扰的算法
参见论文原文http://eeweb.poly.edu/~onur/publish/sub.pdf-SUBSPACES OF QUANTIZATION ARTIFACTS FOR IMAGE TRANSFORM COMPRESSION
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一、使用TCP协议传输数据。理由:稳定性好。
二、使用字节数据流进行传输,理由:
A:VB的String存在自动Unicode转换问题,影响速度;
B:可以直接发送8位字节数据,不需要使用Base64编码,从而减少了编码时间。
三、使用GIF-LZW压缩算法压缩图像。理由:
A:行程编码、Huffman压缩算法压缩率太低;
B:JPEG压缩算法需要太多位运算,且运算量大(有专门MMX优化算法),不利于VB实现;
C:GIF-LZW压缩算法压缩率较好,且我已想
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该算法将粒子对算法应用于图像矢量量化,是一个很实用的源码。-The algorithm will be applied to particle image vector quantization algorithm, is a very useful source.
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对图像进行压缩,包括DCT变换,量化,游程编码。有良好的压缩比和压缩率。-Image compression, including DCT transform, quantization, run-length coding. A good compression ratio and compression ratio.
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一套很好用的图像处理程序集,包括剪切、缩放、旋转和镜像的理论与实现,以及灰度化、假彩色与伪彩色处理、颜色分离与滤色、颜色调整、亮度对比度调整、颜色量化与减色和抖动的编程技术。-With a good set of image processing procedures, including shearing, scaling, rotation and mirroring of theory and implementation, as well as grayscale and pseudo-
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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 -
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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 -
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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 -
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对一副黑白图像进行简单的压缩处理,通过离散余弦变换,量化处理,游程编码,等步骤,最后实现图像的压缩复原-On a simple black and white image compression by discrete cosine transform, quantization processing, run-length encoding, and other steps, the final realization of image compression recovery
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对测试图像分块、DCT和量化,将量化后的系数写成矩阵形式。-The test image block, DCT and quantization, the quantized coefficients written in matrix form.
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对图像进行DFT DCT变换,放大缩小变换,量化比特改变重建-DFT DCT transform of the image, zoom transform, quantization bits to change the reconstruction of
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