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DOC的快速变换
- 考虑到DCT变换中的系数要重复计算，可使用查找表来提高运行的效率，只要开始DCT变换之前计算一次，DCT变换中就可以只查找而无需计算系数。-to the DCT coefficients to be calculated, the use of look-up tables to improve operational efficiency, as long as the DCT started once before, on DCT can only search without calcul
openjpeg-2.0.0-win32-x86
- JPEG 2000 encoding and decoding, DCT, quantization, encoding entropic, huffman, arithmetique, wavelets coefficients
jpegcodec
- jpeg coder and decoder with out using block proc function.Reading the image into 8x8 blocks and apllied the DCT transform and quantization using quantization tables.After that seperation of DC and AC coefficients and I applied the DPCM for DC coeffci
Laplace
- 传统的短时谱估计语音增强算法通常假设语音谱分量相互独立，没有考虑语音谱分量间的相关性。针对这 一问题，该文提出一种新的基于多元Laplace分布模型的短时谱估计算法。首先，假设语音的离散余弦变换(DCT) 系数服从多元Laplace分布，以此利用谱分量间的相关性；在此基础上，利用多元随机矢量的高斯尺度混合模型表 示，推导得到语音DCT系数矢量的最小均方误差(MMSE)估计的解析表达式；并进一步推导了基于该分布模型的 语音存在概率，对最小均方误差估计子进行修正。实验结果表明，该算法
shat
- The aim of this application is to implement scalable mpeg type compression by varying DCT coefficients and finding minimum number of DCT coefficients that can give minimum acceptable quality.. This application only works for gray scale.
threshold-coding
- The aim of this application is to implement scalable mpeg type compression by varying DCT coefficients and finding minimum number of DCT coefficients that can give minimum acceptable quality.. This application only works for gray scale.
zonal-coding
- The aim of this application is to implement scalable mpeg type compression by varying DCT coefficients and finding minimum number of DCT coefficients that can give minimum acceptable quality.. This application only works for gray scale.