Description: 用VC写的一个小波正反变换.新一代静止图像压缩标准JPEG2000将离散小波变换(DWT)作为其核心变换技术.-VC write a wavelet transform pros. A new generation of geostationary JPEG2000 image compression standard of discrete wavelet transform (DWT) as its core technology transformation. Platform: |
Size: 79872 |
Author:阿良 |
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Description: JPEG 标准的最新进展是 1996 年开始制定， 2001 年正式成为国际标准的 JPEG 2000 。与 JPEG 相比， JPEG 2000 作了大幅改进，其中最重要的是用离散小波变换（ DWT ）替代了 JPEG 标准中的离散余弦变换。在文件大小相同的情况下， JPEG 2000 压缩的图像比 JPEG 质量更高，精度损失更小。作为一个新标准， JPEG 2000 暂时还没有得到广泛的应用，不过包括数码相机制造商在内的许多企业都对其应用前景表示乐观， JPEG 2000 在图像压缩领域里大显身手的那一天应该不会特别遥远。 -JPEG standard on the latest progress of the development started in 1996 and in 2001 became the international standard JPEG 2000. Compared with JPEG, JPEG 2000 made substantial improvements, the most important of which is discrete wavelet transform (DWT) instead of the JPEG standard discrete cosine transform. The file size under the same circumstances, JPEG 2000 compressed images of higher quality than JPEG, precision small loss. As a new standard, JPEG 2000 has not yet been widely applied, including digital camera manufacturers in many enterprises have their applications are optimistic about the prospects of the JPEG 2000 image compression areas prone to the day should not particularly remote. Platform: |
Size: 68608 |
Author:ldwe |
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Description: 本例子用c++实现了关于小波零树的图像压缩算法，对小波感兴趣的可以看看。-this case with the realization of the c-tree wavelet image compression algorithm, the wavelet can be interesting to see. Platform: |
Size: 18432 |
Author:sunl |
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Description: 用于电视编码，解码，比较各种图像压缩算法的优缺点，给出基于DCT变换的图像压缩软件程序-for video encoding, decoding, compare various image compression algorithm advantages and disadvantages DCT is based on the image compression software Platform: |
Size: 4495360 |
Author:陈兵 |
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Description: 本程序基于小波变换的三级分解及重构相关程序，有利于对小波变换在图像压缩中的应用的学习与了解。-procedures based on the wavelet transform three decomposition and reconstruction associated procedures, it is beneficial for wavelet transform in image compression applications of learning and understanding. Platform: |
Size: 2048 |
Author:姚永辉 |
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Description: 提出了一种基于小波域的图像数字水印算法·该算法将相互正交的两种水印(鲁棒水印和参考
水印)同时添加到经过DWT后的载体图像小波系数中,然后用小波反变换得到添加了水印的图像·用提取出
的参考水印来估计图像所受到的攻击,由于提取出的鲁棒水印所受的攻击与参考水印受到的攻击一样,因此
可以估计出原始的鲁棒水印·通过对嵌入水印的图像进行加入噪声、滤波、压缩以及裁剪等大量图像处理等试
验,均能正确检测出水印,表明该算法具有很好的感知效果和鲁棒性
-A wavelet-based image digital watermarking algorithm that the algorithm will be mutually orthogonal two watermarks (watermark robust watermarking and reference) at the same time added to the carrier after image after DWT wavelet coefficients, and then using wavelet transform has been Add a watermark image to use to extract a reference to estimate the watermark image by the attacks, as a result of the robust watermark extracted suffered attacks and the reference watermark by the same attack, it can be estimated through the original Robust Watermarking of the embedded watermark image by adding noise, filtering, compression and cutting, such as a large number of image processing such as testing, can correctly detect the watermark, show that the algorithm has good performance and robustness of perception Platform: |
Size: 190464 |
Author:李倩 |
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Description: 这是偶自己的作品拉，基于matlab环境，作的图象压缩实验，分别ＤＷＴ与ＳＷＴ作对比参照实验-This is the duality gap own work, based on the matlab environment, for the image compression experiments, DWT and SWT, respectively, compared with reference to experimental Platform: |
Size: 16384 |
Author:胡敏 |
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Description: 小波变换是一种快速发展和比较流行的信号分析方法, 其在图像处理中有非常重要的应用, 包括图像压缩, 图像去噪, 图像融合, 图像分解, 图像增强等。小波分析是傅立叶分析思想方法的发展与延拓。除了连续小波
(CWT)、离散小波(DWT), 还有小波包avelet Packet)和多维小波。本文主要介绍小波变换的发展及其在图像处理、的应用-Wavelet transform is a fast-growing and more popular method of signal analysis, image processing in a very important applications, including image compression, image denoising, image fusion, image decomposition, image enhancement and so on. Wavelet analysis is a Fourier analysis method development and extension. Apart from the continuous wavelet (CWT), discrete wavelet (DWT), there are wavelet packet (Wavelet Packet) and multi-dimensional wavelet. This paper describes the development of wavelet transform and its application in image processing Platform: |
Size: 548864 |
Author:yang |
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Description: 双树复小波变换具有平移不变性、方向选择性等特点，适合进行图像压缩，优于传统离散小波变换方法。-The DT-CWT is suitable to image compression processing because of its shift invariance and directional selectivity. It is preferable to traditional Discrete Wavelet Transform(DWT). Platform: |
Size: 1024 |
Author:缪国锋 |
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Description: PERCEPTUAL OPTIMIZATION OF WAVELET IMAGE COMPRESSION
NASA’s extensive image compression requirements may be met in part by the use
of wavelet techniques.1 Wavelets form a large class of signal and image transforms,
generally characterized by decomposition into a set of self-similar signals that vary
in scale and (in 2D) orientation.2 The Discrete Wavelet Transform (DWT) is a
particular member of this family which operates on discrete sequences, and which
has proven to be an effective tool in image compression. Platform: |
Size: 58368 |
Author:hussam |
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Description: 基于Matlab的JPEG2000图像压缩实现，离散小波变换DWT，程序中图片的位置修改下可以自己运行程序看到效果-Matlab-based implementation of the JPEG2000 image compression, discrete wavelet transform DWT, where the image changes the program may be run its own program to see results Platform: |
Size: 2048 |
Author:张松松 |
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Description: This the project is image compression based dwt algorithm-This is the project is image compression based dwt algorithm Platform: |
Size: 11264 |
Author:venkatvasu |
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Search - image compression dwt