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[Other] Rate~distortion~optimized~image~compression~using~

Description: 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 algorithm by add ing a wedgelet symbol to its tree-pruning optim ization.
Platform: | Size: 269815 | Author: 金金 | Hits:

[Other] Rate~distortion~optimized~image~compression~using~

Description: 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 algorithm by add ing a wedgelet symbol to its tree-pruning optim ization.
Platform: | Size: 269312 | Author: 金金 | Hits:

[VHDL-FPGA-Verilog] dds_easy

Description: 直接频率合成DDS模块的ise工程，可以直接下载，在Spartan3/Spartan3E上验证通过。该DDS模块可以产生双通道的不同频率的正弦波，也可以产生同频的任意相位差的相移波形。本模块累加器位数为32位，可以产生12位相位精度12位量化精度的正弦波。该设计例化一个Block Ram，为节省储存空间仅需要储存1/4周期的数据。根据需要，可以重新修改数据，改变波形。-DDS direct frequency synthesizer module ，ise project, can be directly downloaded through the Spartan3/Spartan3E and tested successfully. The DDS module can generate two-channel sine wave of different frequency, or produce the same frequency arbitrary waveform phase difference of the phase shift. There is a 32-bit accumulator to generate 12 bit phase-precision 12-bit quantization precision of the sine wave. Cases the design of a Block Ram, in order to save storage space need to store only 1/4 cycle of data. Necessary, can modify data, change the waveform.
Platform: | Size: 471040 | Author: 郭先生 | Hits:

[Special Effects] bianma

Description: 根据jepg压缩的基本原理，先进行分块，该 模拟JPEG压缩过程 实验读取的是图像前4*4的小块，然后对其进行DCT变换，将空间域变换到频域中，再除以量化系数，减小数据量。并进行取整操作。然后根据量化后的数值矩阵进行解码操作。-First conduct a block, the experiment is to read the image the first 4* 4 small pieces, then its DCT transform, the space domain to the frequency domain, and then divided by the quantization factor, reducing the amount of data. And the rounding operation. Then the quantized value of matrix decoding.
Platform: | Size: 1024 | Author: serena | Hits:

[Special Effects] Digital_Image_Process_Example

Description: 本展示程式，采用Borland C++ Builder编译器开发， 参考书籍为 Digital Image Processing, Prentice Hall, 2002. (2nd edition) 具备功能如下： 空间域处理 Spatial domain proc.. 灰阶值转换 Gray Level Trans.. 遮罩型滤波器 Spatial Filter 统计型滤波器 Statistics Filter 梯度运算子 Gradient Operator Canny 边缘侦测器使用梯度运算子 参考 Computer Vision Shapiro Stockman Prentice Hall P.300 杂讯产生器 Noise 影像空间转换 Translate 频率域处理Frequency domain proc.. 傅利叶转换 Fourier transform 显示FFT(DFT)频域影像 Show Fourier trans.. 频率域滤波器 Frequency Filter Ideal低频滤波器 Ideal高频滤波器 Butterworth低频滤波器 Butterworth高频滤波器 Gaussian低频滤波器 Gaussian高频滤波器 离散余弦转换 DCT transform 显示DCT频域影像 Show Fourier trans.. DCT量化器 DCT Quantization (P441)霍夫曼编码实作-The show program using Borland C++ Builder compiler development, The reference books Digital Image Processing, Prentice Hall, 2002. (2nd edition) Have the following functions: Space domain processing Spatial domain proc .. Grayscale value conversion Gray Level Trans .. Spatial Filter mask filter Statistics Filter statistical filter Gradient operator Gradient Operator Canny edge detector using the gradient operator Reference Computer Vision Shapiro Stockman Prentice Hall P.300 Noise Generator Noise Image space conversion Translate Frequency domain processing Frequency domain proc .. Fourier transform Fourier transform Display FFT (DFT) frequency domain imaging Show Fourier trans .. Frequency domain filter Frequency Filter Ideal low-pass filter Ideal high-frequency filter Butterworth low-frequency filter The Butterworth high frequency filter Gaussian low-pass filter The Gaussian high frequency filter The discrete cosine transform D
Platform: | Size: 1949696 | Author: 章竣尧 | Hits:

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