搜索资源列表
wavelet97
- 利用97小波变换进行图像压缩，用matlab仿真，实验证明它具有较高的压缩比-using wavelet transform image compression using Matlab simulation experiment to prove that it has a higher compression ratio
dct_condense
- 余弦变换压缩，用于图像压缩，压缩比高，且压缩后图像质量仍然很好。适用于灰度图象。-Cosine Transform compression for image compression, compression ratio, and compressed image quality is still good. Apply to the gray-scale image.
A_new_algorithm_of_image_compress_based_on_BP_neur
- 本文探讨了神经网络用于图像压缩的方法，提出了一种基于边缘信息检测的BP神经网络压缩方法:按图像各部分像素特征将图像分为平滑块、纹理块和边缘块，不同的分类块采用不同的隐含层数。实验结果证明本算法在在保证重建图像丰富细节的同时，能大大提高图像的压缩比。-This paper discusses the neural network for image compression method, edge information is presented based on BP neural networ
jpeg
- 通过dct变换，以及使用了熵编码的huffman编码形式，对lena图像进行压缩。改变压缩率来看压缩结果-By dct transform, and the use of entropy coding huffman encoding on the lena image compression. Change the compression ratio compression results view
Huffman
- MatLab实现对灰度图像的哈夫曼编码。 给出每个灰度级的编码。 并计算压缩比。-MatLab implementation of Huffman coding of gray image. Each gray-scale coding is given. And calculate the compression ratio.
RunLength_finsh
- 利用vc 开发平台实现游程编码的算法，文件中有详细的代码，可以得出压缩比。里面也有运行程序的结果。-Vc development platform to use to achieve run-length coding algorithm, the document in detail the code compression ratio can be drawn. There is also the result of running the program.
DCTchange
- DCT变换程序，将一组给定的8*8图像块经过DCT变换为另一个8*8矩阵，并计算输出压缩比。-DCT transform process, a given set of 8* 8 image block after DCT transform for another 8* 8 matrix, and calculate the output compression ratio.
image_processing
- 包含多种图像处理算法，可显示图像直方图，进行图像压缩计算压缩比，对图像进行锐化（拉普拉斯算子，索伯算子等）-Contains a variety of image processing algorithms, can display the image histogram for image compression calculation of compression ratio, image sharpening [Laplacian, Sober algorithm, etc.]
Huffman
- 利用霍夫曼编码对图像的冗余度进行压缩，以利于传输。采用霍夫曼编码来得到比较好的压缩比。-Use Huffman code redundancy of images compressed in order to facilitate transmission. Huffman code used to get relatively good compression ratio.
compression
- 对图像进行压缩，包括DCT变换，量化，游程编码。有良好的压缩比和压缩率。-Image compression, including DCT transform, quantization, run-length coding. A good compression ratio and compression ratio.
ObjectiveFidelityCriteria
- 本实验要求编写一个计算压缩-解压缩图像的均方根误差、均方信噪比的程序。该程序是一个通用程序。编写程序产生图示的结果。使用上面的保真度准则程序计算可视信息的损失特性。-Prepared in this experiment, a calculation of compression- decompression of the root-mean-square error of image, mean square signal to noise ratio of the procedure. Th
Untitled3
- 图形压缩比计算方法 我上学期做的 可以用 运行成功了-Graphics compression ratio calculation method
EZW
- 此代码是小波零树算法的matlab实现程序，子程序较为齐全，包括最后计算压缩图像的峰值信噪比和压缩效果的源码。-This code is the wavelet zero-tree algorithm matlab implementation procedures, subroutines are more complete, including the final calculation of the peak signal to noise ratio and the compressed
XIAOBO
- 小波分析有它独特的特点。它的压缩比高、压缩速度快 , 压缩后能保持信号与图像的特征基本不变 ,且在传递过程中可以抗干扰。可以克服传统方法产生的缺陷 ,因此获得了较好的压缩效果。 -Wavelet analysis has its unique characteristics. Its high compression ratio, compression speed, compressed to maintain the basic characteristics of the sign
Denoise_compression
- 分形在图像压缩技术中的应用已成为图像数据压缩领域中最为热点的问题之一 其压缩比在理论上可超过经典压缩方法的几个数量级。 -Fractal image compression technology in the application of image data compression has become an area of one of the most hot spots in theory, its compression ratio can be compressed more t
ImageCompress
- 利用主分量分析技术进行图像压缩，实验证明该算法具有很好的压缩比-Using principal component analysis for image compression, experimental results show that the algorithm has very good compression ratio
RLE
- 灰度图像的二值化，实现图像的RLE编解码，并计算图像的压缩比。-Gray image binarization, the RLE encoding and decoding of image and calculate the compression ratio.
A.Blind.and.Robust.Watermarking.Scheme
- Abstract- H.264/AVC is becoming a popular video codec for its better compression ratio, lower distortion and applicability to portable electronic devices. Thus, issues of copyright protection appropriate for this standard become very importan
DCT_JPEG
- 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
myidwt1
- matlab环境的小波压缩算法，给予dwt的心电图压缩，滤去了高频分量，具有较高的压缩比率-matlab environment wavelet compression algorithm, giving dwt ECG compression, filter the high frequency components with high compression ratio