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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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8*8矩阵dct变换以及量化 反量化和反dct变换,8* 8 transform and quantization matrix dct quantization and anti-anti-dct transform
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图像颜色特征的提取:HSV颜色直方图 描述的是图像的整体颜*况。本程序采用非均匀量化方法得到36bin的颜色直方图。,Image Color Feature Extraction: HSV color histogram describes the situation of the image' s overall color. This procedure using non-uniform quantization method the color histogram 36bin.
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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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本代码是利用matlab开发环境,对图像进行矢量量化,从而实现对图像的压缩;并介绍了需要用到的一些matlab现有函数及其使用方法和功能;在码书的训练方法上选择的是自组织映射神经网络,解码重建后的图像质量较好-The application of Self-Orgnization Feature Maps neural network in image vector quantization
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matlab编的基于图像矢量量化的水印程序,用分割码本的办法嵌入水印!-matlab for image vector quantization-based watermarking process, with the approach of the division of code embedded watermark!
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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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基于FFT变换、DCT变换、HT变换、小波变换和矢量量化技术的图像压缩的Matlab实现。-Based on the FFT transform, DCT transform, HT transform, wavelet transform and vector quantization image compression technology, the Matlab implementation.
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实现对视频图像的游程编码和解码。过程包括:二维DCT变换、量化及游程编码。
一般来讲对于视频的I帧进行恢复,其信噪比可达到38DB以上。-Implementation of the video image encoding and decoding run-length. Process includes: two-dimensional DCT transform, quantization and run-length encoding. In general, I frame for
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一个用于量化的程序,包括均匀量化和非均匀量化。-One for quantitative procedures, including non-uniform quantization and uniform quantization.
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给予matlab的JPEG压缩程序,包含原始压缩图片,程序对灰度bmp图片进行JEPG编码,压缩成以0101形式的编码。JPEG编码先把图象色彩RBG变成亮度Y和色度Cr、Cb,它利用人的视觉对色度不敏感的特点,减少一部分色度数据,以达到压缩。 JPEG采取多种编码方式,包含有行程编码(Run Length Coding)和哈夫曼(Huffman)编码,有很高的压缩比。在编码前,先对数据进行分块,离散余弦变换(DCT)及量化,保留能量大的低频信号,丢弃高频信号以达到压缩。-Given to th
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本文件利用matlab对图像进行scalar quantization。程序分别对图像进行了8,16,32,64level量化,同时计算出了不同level的MSE/SNR/PSNR 。-This matlab file realize the scalar quantization on the image. The program quantizes the image with 8, 16, 32, 64 levels respectively, and then compute the v
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this function or program is used to perform vector quantization on image by using matlab program
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also using vector quantization on image by using matlab program to achieve a good compression ratio
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this function perform block vector quantization encoding and decoding for still image by using matlab program
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基于LBG算法的矢量量化编码用MATLAB实现图像压缩-Image compression based on the LBG algorithm for vector quantization coding with MATLAB
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基于matlab的帧内16*16宏块预测代码实现,采用全搜索算法,后面有简化的DCT变换和量化过程-inter prediction of 16*16 macroblocks using Full Search Algorithm based on matlab, followed with simplified process of DCT transform and quantization
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用matlab实现了超复数傅里叶变换;
实现了量化索引算法;
实现了基于傅里叶变换和量化索引的彩色图像数字水印的嵌入以及提取算法;-Using matlab the hypercomplex Fourier Transform quantization index algorithm realized based on the Fourier transform and quantization index color image watermarking embedding and
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盲水印提取时不需要参考原始载体图像,在信息隐藏、版权保护等方面具有更广泛的应用前景。提出的盲水印算法在分块离散余弦变换(DCT)和离散小波变换(DWT)的基础上,利用关系双方DCT系数和DWT系数在受到攻击时具有相同变化趋势的特点,采用关系嵌入和量化嵌入的自适应选择嵌入策略,较大幅度地提高了盲水印提取的鲁棒性。同时在量化嵌入中采用抖动调制,实现了水印透明性和鲁棒性调节的便捷性。大量仿真实验结果表明该算法对噪声干扰、低通滤波、JPEG压缩、对比度增强等攻击有很好的鲁棒性和透明性。关键词 数字水印盲
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图像的数字化(matlab语句的编写,图像读取、改变像素值、显示,分辨率的转换、量化比特数的改变)-Digital images (matlab prepared statement, the image reading, changing pixel values, display, resolution conversion, change the number of quantization bits)
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