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利用matlab进行基于小波变换的图像量化编解码-using Matlab-based wavelet image quantization codecs
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in this paper,wo propose an extension of the zerotree-based space-frequency quantization algorithm by adding a wedgelet symbol to its tree-pruning optimization.-in this paper. wo propose an extension of the zeotree-based s pace-frequency quantization
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preprocessing for image quantization.
This file include:
void get_bmp()
void put_bmp()
void float_to_unchar()
void unchar_to_float()
void get_QT()
void quantization_constraint()
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已知两个不同图像块亮度数据如下：
（1）分析DCT原理，采用DCT方法，编程并计算相应的DCT系数，分析系数分布特点。
（2）依据视觉特性分析量化表步长的分布特点，完成DCT系数量化。
（3）采用Z形扫描，实现输出数据的统计编码，形成Video stream。
（4）采用IDCT重建图像亮度数据，计算SAD大小，分析产生误差的原因及采用DCT进行数据压缩的原理。（ ）
（5）分别利用左上角1、3、6个系数重建图像，计算相应的SAD，并由
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Matlab矢量量化图像压缩程序
矢量量化VQ，是一个常见的压缩技术。Linde, Buzo, and Gray 提出了基于
训练序列的Vector Quantization (VQ)算法。-Matlab vector quantization image compression procedures for vector quantization VQ, is a common compression technology. Linde, Buzo, and Gray proposed
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小波均匀量化huffman熵编码图像压缩程序：分析对象Lena.bmp-Uniform quantization of wavelet image compression huffman entropy coding procedure: analysis of object Lena.bmp
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一本绝版的书，不过很不错，我一直想买，网上也买不到，关于矢量量化的，图像，语音的量化等-An out-of-print books, but very good, I have always wanted to buy, buy online, on the vector quantization, image, voice and other quantitative
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JPEG图像压缩和解压MATLAB程序，使用了DCT2、线性量化编码、zigzag变换和游程编码理论-JPEG image compression and decompression MATLAB procedures, using DCT2, linear quantization coding, zigzag transform and run-length coding theory
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Local K-means Algorithm for Colour Image Quantization
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Quantization of a image. This algorith show the type of quantization employed and the result of image quantization.
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实现小波变换对图像进行压缩。先进行db1小波二层分解，然后由均匀量化算法对其进行量化实现压缩。-The realization of wavelet transform for image compression. First two db1 wavelet decomposition, and then by the uniform quantization algorithm to quantify the achievement of its compression.
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编程实现基于8×8子块的DCT图像变换，基于JPEG量化矩阵的量化与反量化，基于8×8子块DCT的图像重建；以一幅512×512、8比特/象素的图像为实验对象，计算重建后的PSNR。-Programming based on 8 × 8 sub-block of the DCT image transform, quantization matrix based on the JPEG quantization and anti-quantitative, based on the 8 × 8
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Compression and decompression VQ=vector quantization for image.
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输入YUV文件，输出RAW文件，可以改变图像的量化步长，运动矢量-YUV input file, output RAW files, you can change the image quantization step, motion vector
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H.264图像编码程序对输入像素块X的整数DCT变换和量化-H.264 encoding process the input image pixel block X integer DCT transform and quantization
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将图像颜色量化为72种。可以做图像检索用的好东西-Images for 72 kinds of color quantization. Image retrieval can be done with good things! !
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this s the program for image quantization.
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WGT Graphics Tutorial #5 - Realtime Morphing - WGT Graphics Tutorial Issue #5 Topic: Realtime Morphing Learn about image fading, color quantization, and texture mapping. Full source code and explanation.-WGT Graphics Tutorial#5- Realtime Morphing- WG
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工程名为DctQuant，编程实现了一帧CIF格式4:2:0的YUV图像的H.264的整数变换、量化以及逆量化、逆变换。具体的功能表述如下：
1、首先按“打开YUV”按钮，选择一帧格式为CIF的4:2:0的YUV图像（默认的YUV图像的格式为4:2:0的CIF格式）。选择完成后，可以看到显示的输入图像。
2、输入QP值，QP是0到51之间的整数值，超出范围，会弹出对话框提示。QP默认为28。注意：当改变QP值为0时，即没有量化，则点击转换按钮显示出的PSNR值即为输入图像的PSNR值。
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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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