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lvboqqqqqqq
于傅里叶变换的图像加密技术研究
具体是将一幅图像用 fft 变换到频域
在频域中进行加密 我考虑的是通过随机相位来加密的方法,请问用matlab怎样实现
加密后在通过 ifft 得到加密后的图象
(Fourier transform in the image encryption technology to study the details of an image is to use fft transformed to the frequency domain in the frequency domain I consider encryption is through random-phase approach to encryption, Will the use of Matlab how to achieve the adoption of encryption ifft be encrypted images)
- 2006-09-07 20:44:18下载
- 积分:1
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lee
说明: 对图像噪声进行滤除,从而方便合成孔径雷达干涉图数据处理的后续步骤,包括相位解缠以及生成dem数据。(Image noise filtering)
- 2021-02-02 12:27:59下载
- 积分:1
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kalmanXYZT.m
卡尔曼滤波(扩展方法)定时定位,自己编写调试。(Kalman filter (extension methods) time positioning, write your own debugging.)
- 2013-10-11 21:38:40下载
- 积分:1
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Face_eye_detection_Eye_tracking
一个人脸识别和人眼跟踪的程序包.针对几十幅图象组成的视频进行识别和跟踪.大家参考吧!(脪 禄赂 枚脠脣脕 鲁 脢 露 卤 冒 潞 脥脠脣脩脹 赂 煤 脳 脵渭脛 鲁 脤脨貌 掳 眉.脮毛 露 脭 录 赂 脢 庐 霉脥 录 脧贸 脳 茅 鲁 脡渭脛脢脫脝渭 陆 酶脨脨脢 露 卤 冒 潞 脥 赂 煤 脳 脵. )
- 2008-04-08 12:42:56下载
- 积分:1
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kld
基于数学形态学的图像颗粒度分析算法,先去噪再求面积然后绘制颗粒度函数。(based on mathematical morphology particle size analysis algorithms, first try to de-noising area before drawing particles function.)
- 2006-06-24 13:10:11下载
- 积分:1
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TERCOM
TERCOM(数字高程匹配)地形匹配算法,经调试可以运行(TERCOM (Digital Elevation match) terrain matching algorithm, the debugger can be run)
- 2020-09-18 14:27:56下载
- 积分:1
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Haralick
计算灰度共生距的matlab源代码Haralick Texture Features Matlab Toolbox v0.1b(Calculation of gray symbiotic matlab source code from the Haralick Texture Features Matlab Toolbox v0.1b)
- 2009-01-14 16:48:47下载
- 积分:1
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ISAR
:近距离目标超高分辨率微波成像技术在安全检测、非破坏性控制、生物医学等领域中有着非常重要的应用
价值和广阔的应用前景。该文利用基于窄脉冲形式的超宽带时域雷达系统研究近距离目标的高分辨率ISAR成像,
给出了仿真和实测结果。利用转台旋转目标,基于超宽带脉冲源和超宽带收发天线以及高性能取样示波器,配以同
步触发脉冲和自行研发的数据采集软件,搭建了该时域雷达实验系统,提出了准确获取目标回波信息的实验条件,
和实现回波延时精确校正的误差补偿方法。并针对采样时间窗内的杂波干扰,讨论了时域后向投影算法(Back
Projection,BP)与背景对消技术相结合的成像算法,实现了分辨率为 8 mm 的近距离目标的成像,准确地反映了
目标的位置、形状和大小等信息。( The high resolution imaging of near field targets are interesting for security, non-destructive control and
biomedical application. In this paper, high resolution near field ISAR imaging is implemented using Ultra Wide
Band (UWB) time domain radar system. Simulation and experiment are both conducted. The target is rotated by
turntable. The system is built based on the UWB pulse source, UWB antennas, high performance sampling
oscillograph, synchronous trigger pulse and proper motion study data acquisition software. Experiment condition
and delay errors compensation method are presented to obtain accurate echo information of the target. And Back
Projection (BP) combined with background cancel algorithm is discussed considering the clutter interference in
time window. )
- 2011-06-19 10:30:55下载
- 积分:1
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iterative_blind_deconvolution
说明: 盲迭代反卷积算法,可以在不求PS的情况下恢复图像(Iterative blind deconvolution algorithm, can not seek restoration of the PS images)
- 2008-09-04 22:31:03下载
- 积分:1
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Digital-Image-Processing-writed-by-Gonzalez-secon
Digital Image Processing writed by Gonzalez second edition of the Chinese version
- 2012-04-05 23:13:38下载
- 积分:1