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CadTool_ETRI_Final
- 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 -
JND
- 将watson的DCT视觉模型计算出来，能够得到每个8*8块的系数的JND值- calculate watson s vision model,we can get the JND of every 8*8 s coefficients.
PMatermarkingr
- 提出一种基于DWT和DCT域的有意义二值图像数字水印算法 利用Arnold变换对水印序列进行置乱,消除象素的空间相关性,增加水印的安全性 而结合小波波变换和离散余弦变换的特性,将水印信息嵌入到图像变换域的低频和中频系数中,提高水印的鲁棒性和不可见性 实验证明该算法具有较好的抗压缩、抗噪音和抗剪切性。 -Making meaningful binary image digital watermarking algorithm based on DWT and DCT domain using
JPEG_BaseLine_Encoder
- The JPEG compression scheme is divided into the following stages: 1. Transform the image into an optimal color space. 2. Adjust Aspect Ratio 16:9 3. Digitization Scheme 4:2:0. 4. Apply a Discrete Cosine Transform (DCT) to blocks of pixels
MLCC
- Calculate Mel-frequency cepstral coefficients by: - take the absolute value of the STFT - warp to a Mel frequency scale - take the DCT of the log-Mel-spectrum - return the first <ncep> components
MaseraConf_17.pdf.tar
- In this paper, we present area- and power-efficient architectures for the implementation of integer discrete cosine transform (DCT) of different lengths to be used in High Efficiency Video Coding (HEVC). We show that an efficient constant matrix-
dct
- 应用matlab程序编写的在不同量化系数下的有损压缩效果(The lossy compression effect of different quantization coefficients written by matlab program)
MATLAB读取JPEG图片的DCT系数
- jpg编解码，提取DCT系数，dc系数和ac系数的哈夫曼编码表等(Jpg coding and decoding, extracting DCT coefficients, DC coefficients and AC coefficients Huffman coding table, etc.)