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JPEGCompression
编码:
(1)进行颜色转换,将RGB格式转换为YUV格式。
(2)将待编码的N×N的图像分解成(N/8)^ 2 个大小为8×8的子图像。
(3)对每个子图像进行DCT变换,得到各子图像的变换系数。这一步的实质是把空间域表示的图像转换成频率域表示的图像。
(4)对变换系数进行量化。
(5)进行Z字形重排
(6)使用霍夫曼变长变码编码器对量化的系数进行编码,得到压缩后的图像(数据)。
解码:
(1) 对压缩的图像数据进行解码,得到用量化系数表示的图像数据。
(2) 进行反Z字型重排
(3)用与编码时相同的量化函数或量化值表对用量化系数表示的图像数据进行逆量化,得到每个子图像的变换系数。
(4)对逆量化得到的每个子图像的变换系数进行反向正交变换(如反向DCT变换等),得到(N/8)^2 个大小为8×8的子图像。
(5)将(N/8)^2 个大小为8×8的子图像重构成一个N×N的图像。
(6)进行颜色组合,将YUV格式转换为RGB格式图像。(JPEG compression and decompression process)
- 2019-02-18 22:58:13下载
- 积分:1
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GS
说明: 计算全息算法,使用matlab算法计算出图像的相位分布(Computational holographic algorithm)
- 2020-12-25 11:00:05下载
- 积分:1
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grabcut
matlab中实现grabcut,已经编译调试好了,直接运行就可以了(the code of grabcut,you can run it in matlab without debug)
- 2020-11-02 13:29:53下载
- 积分:1
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arnold1
用arnold变换对lena图进行图像置乱(scramble a picture by arnold transformation)
- 2009-05-04 17:21:44下载
- 积分:1
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ObjectTracking
目标跟踪的两个算法,分别是运动变化和基于高斯权值的颜色空间HSI的meanshift算法(Two target tracking algorithm, namely, Gaussian-based movement and the right to change the value of the HSI color space meanshift algorithm)
- 2007-12-19 18:37:37下载
- 积分:1
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surfAndsift
里面有注释,还有sift和surf的比较(There are notes, there are more sift and surf the)
- 2015-01-25 21:16:46下载
- 积分:1
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图像中值滤波处理源代码.zip
说明: C语言编写的程序,可以对图象进行中值滤波处理,效果不错,联系方式: QQ76947175(c program which can execute medeaval filter.good performance,contact with QQ76947175.)
- 2020-12-09 21:19:20下载
- 积分:1
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Small-wave-analysis
(1) 进行小波的图像消噪处理
(2) 进行小波的图像压缩处理
(3) 进行小波的图像增强处理
((1) Wavelet Image Denoising (2) Wavelet Image Compression (3) Wavelet Image Enhancement)
- 2007-03-10 13:47:38下载
- 积分:1
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MATLAB
介绍了DAB 接收机中的OFDM 同步算法,重点对OFDM 接收机方案中基于保护间隔的符号定时估计、频
率偏移估计进行了分析,提出了适用于Eureka147DAB 系统的同步算法;并对各种算法进行了计算机仿真,本文介绍的算法满
足DAB 接收机的要求,有很大的应用价值。(Introduced the DAB the OFDM receiver synchronization algorithms, focusing on OFDM receiver scheme based on the protection of the interval estimation, frequency symbol timing
Rate migration estimates are analyzed and some appropriate Eureka147DAB system in the synchronization algorithms And kinds of the computer simulation algorithm, this paper introduces the algorithm of the full
The requirements of the foot DAB receiver, a large application value.
)
- 2012-02-23 14:34:06下载
- 积分:1
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FreeImage380Chinese
一个自由、开源的图形库--FreeImage3.92最新版的中文参考(支持位图构件―例如调色板和数据位―的便易访问;将位图从一种位深度转换到另一种位深度;当有多幅位图页―例如TIFF―时访问位图的不同页;基本的位图处理,如旋转、翻转(flipping)和重采样,或点操作,如亮度和对比度调整;Alpha混合与合成(Compositing and blending);FreeImage不支持:高级图象处理操作,如回卷(Convolution)和变换(Transform);位图绘制; 矢量图形。)(a free, revenue graphics library-- the latest version FreeImage3 .92 reference to the Chinese (support bitmap elements- such as transfer shade and data spaces- the easy access; will be from a bitmap-depth conversion to another kind of depth; When a number of bitmap page- such as TIFF- Bitmap to visit the different pages; basic bitmap processing, such as rotation, Upset (flipping) and resampling, or point operations, such as brightness and contrast adjustments; Alpha mixed with the synthetic (Compositing and blending); FreeImage not support : Advanced image processing operation, If the response (Convolution) and transform (Transform); bitmap rendering; Vector graphics.))
- 2007-02-12 14:25:21下载
- 积分:1