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小波变换的图像压缩 jpeg2000_matlab
JPEG 2000是基于小波变换的图像压缩标准,由Joint Photographic Experts Group组织创建和维护。JPEG 2000通常被认为是未来取代JPEG(基于离散余弦变换)的下一代图像压缩标准。JPEG 2000文件的副档名通常为.jp2,MIME类型是image/jp2。 JPEG 2000的压缩比更高,而且不会产生原先的基于离散余弦变换的JPEG标准产生的块状模糊瑕疵。JPEG 2000同时支持有损数据压缩和无损数据压缩。另外,JPEG 2000也支持更复杂的渐进式显示和下载。 JPEG 2000是国际标准化组织(ISO)发布的标准,文档代码为ISO/IEC 15444-1:2000。虽然JPEG 2000在技术上有一定的优势,但是到目前为止(2006年),互联网上采用JPEG 2000技术制作的图像文件数量仍然很少,并且大多数的浏览器仍然不支持JPEG 2000图像文件的显示。但是,由于JPEG 2000在无损压缩下仍然能有比较好的压缩率,所以JPEG 2000在图像品质要求比较高的医学图像的分析和处理中已经有了一定程度的广泛应用。
(JPEG 2000 is based on wavelet transform the image compression standard, by Joint Photographic Experts Group organization to create and maintain. JPEG 2000 is often thought to be the future replace JPEG (based on the discrete cosine transform) is the next generation of image compression standard. The file JPEG 2000 vice file name is usually. Jp2, MIME type is image/jp2. JPEG 2000 compression ratio are higher, but won t produce the original based on discrete cosine transform JPEG standard of produce massive fuzzy flaws. JPEG 2000 also detrimental to support data compression and nondestructive data compression. In addition, JPEG 2000 also support more complex gradual display and download. JPEG 2000 is international organization for standardization (ISO) issued the standard, the document code for ISO/IEC 15444-1:2000. Although JPEG 2000 on the technology has certain advantages, but so far (2006), the Internet using JPEG 2000 technical production image file number still few, and most )
- 2012-05-25 21:57:11下载
- 积分:1
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d2a
说明: 简单的产生PAM调制序列的M文件,可生成txt文件存储数据(Simple produce PAM modulation sequence of M files, it can create a TXT files stored data
)
- 2011-04-08 08:39:00下载
- 积分:1
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bpsk_ofdm_RS_EN
Modulation test for OFDM : This is a set of five (5) codes about COFDM (Coded Orthogonal Frequency Division Multiplexing) and coding schemes such as Convolutional, BCH, Reed Solomon (RS) and Low Density Parity Check (LDPC).
The study uses an OFDM signal over an AWGN Channel with white Gaussian noise model, and calculate the Bit Error Rate wich is plotted.
- 2013-05-06 20:52:06下载
- 积分:1
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737434a8c47e4bbbb27d8e445b921785
换热站计算及选型,非常有用,里面用的XLS编写的,直接用就可以~~~~~(Calculation and selection of heat transfer stations, very useful, which use XLS written directly on it ~ ~ ~ ~ ~)
- 2014-01-21 09:42:04下载
- 积分:1
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MIMO
MIMO空时信道模型建模源程序的matlab程序(MIMO space-time channel model in matlab source modeling procedures)
- 2008-04-02 16:50:53下载
- 积分:1
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xiaobobaoyiweiquzao
matlab小波包工具箱的使用来分析信号,实现了一维去噪声的功能,恢复出了原始信号(wavelet packet Matlab toolbox used to analyze signals and realized the noise to a peacekeeping function, restoration of the original signal out)
- 2007-06-26 10:56:30下载
- 积分:1
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FOC
Field oriented control of induction motor
- 2013-09-26 04:16:16下载
- 积分:1
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FFTDFTshixianjiceshi
用matlab进行FFT及DFT算法的实现,并测试其运行速度。(Using matlab for FFT and DFT algorithm and test its speed.)
- 2007-12-14 17:09:38下载
- 积分:1
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count_water__line_ok
用matlab中的hough变换检测茶杯中的水位线,期间做了些限制以使的计算量变小(Using the hough transform matlab detection cup of water line, during some restrictions in order to enable the calculation of quantitative small)
- 2008-01-14 19:03:09下载
- 积分:1
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chazhi
说明: 用来对数据进行差值计算,并用来进行作图
用来对数据进行差值计算,并用来进行作图(The data used to calculate the margin, and used for mapping)
- 2009-08-22 16:41:34下载
- 积分:1