Search - DCT vector quantization

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[2D Graphic] Final_28Nov DL : 0: 2D-DCT 压缩图像后，通过QPSK,AWGN信道编码传输后，IDCT解压缩回原始图像，适用于任何图像-Using DCT to compress the orginal image, I use zigzag program, quantization, dct compression, then change the vector to bineary bit to pass through the QPSK channel. And from the binary array, I use IDCT to reconstructe the orignial image. working perfectly.
Date : 2025-07-06 Size : 3.85mb User : Jackie
[Special Effects] code DL : 1: 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.
Date : 2025-07-06 Size : 4kb User : Anna
[Special Effects] HierarchicalvectorquantizationDCT DL : 0: 分层矢量量化DCT图像压缩算法设计与实现计算机应用技术专业论文-Hierarchical vector quantization DCT image compression algorithm design and implementation of Computer Application Technology Paper
Date : 2025-07-06 Size : 1.96mb User : tidy2356
[matlab] Information-hiding DL : 0: 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 transform) domain information hiding algorithm is the most widely used transform domain algorithms, the largest of these algorithms is the lack of a small amount of information embedded. Hiding Algorithm for DCT domain by analyzing the hidden reasons for the low capacity, a large capacity of information hiding algorithm for DCT domain. Firstly, the spectrum of the carrier image homogenization, and then the image is a global DCT transformation, and hidden information embedded into the image of the low-frequency DCT coefficients, the information embedded in the methods used to achieve sub-quantization, extract hidden information without the original Vector image. Experimental results show that the algorithm embedding capacity, can not be perceived good.
Date : 2025-07-06 Size : 10.25mb User : Mandala
[Special Effects] DCT DL : 0: 基于DCT分类的边缘匹配矢量量化图像编码算法-Based on DCT classification side-match vector quantization image coding algorithm
Date : 2025-07-06 Size : 58kb User : Tom
[Special Effects] DCT DL : 0: 基于改进DCT域分类矢量量化的图像编码算法基于改进DCT域分类矢量量化的图像编码算法-Based on the improved DCT domain classified vector quantization image coding algorithm
Date : 2025-07-06 Size : 30kb User : simon
[Compress-Decompress algrithms] Color-image-compresion-dct-transform DL : 0: CODE FOR COLOR IMAGE COMPRESSION USING QUANTIZATION ALORITHM. VECTOR QUANTIZATION.
Date : 2025-07-06 Size : 466kb User : chandu