Computer Graphics / Image processing 178583 研一上学期课程比较繁重,加上在实验室要做的事情也多,所以最近博客都没更新了。最近数图课上到频域变换处理相关章节,其中的傅里叶变换其实在图形学领域也有颇多的应用(例如大规模的海水模拟),遂写下这篇博客整理了一些关于傅里叶变换的内容。 复数域 傅里叶变换 傅里...
The representation is transformed to real time image space, to drive the matrix of the lighting device. Manipulation in the frequency domain can maintain image characteristics suitable to an intended illumination application yet produce an output illumination image on the matrix that is less obviously ...
Practical techniques for the determination of image spectra have been developed and become popular in the past few years. Both optical processing systems and digital computers can be used to perform linear filtering via the frequency domain. Optical processing systems use Fourier-transforming lenses and...
今天又复习了一遍<<Digital Image Processing>>的第四章,为了加深对频域的理解,我自己用PS画了一张图。如下: 然后做FFT,得到频谱图如下: 从左到右依次表示:图像的频谱、频谱图往横轴的投影、频谱图往纵轴的投影。原图与频谱图的关系可以从两个角度来理解: 1、从横向来看,从中间的白线切一刀下来(其余部分为全...
ImageProcessing7-FrequencyFiltering DigitalImageProcessing ImageEnhancement:FilteringintheFrequencyDomain CourseWebsite:http://www.comp.dit.ie/bmacnamee 2of54 Contents Inthislecturewewilllookatimageenhancementinthefrequencydomain –JeanBaptisteJosephFourier–TheFourierseries&theFouriertransform–ImageProcessinginthe...
DSP - Introduction to Frequency-Domain Analysis Introduction Frequency-domain analysis is a tool of utmost importance in signal processing applications. Frequency-domain analysis is widely used in such areas as communications, geology, remote sensing, and image processing. Whiletime-domain analysis shows...
Image Enhancement in the Frequency Domain Periodicity and the need for Padding: EE-583: Digital Image Processing Prepared By: Dr. Hasan Demirel, PhD Image Enhancement in the Frequency Domain Periodicity and the need for Padding:
EEL 6562 Image Processing and Computer Vision Image Filtering in the frequency domain Edges and sharp transitions in gray values in an image contribute significantly to high-frequency content of its Fourier transform. Regions of relatively u... R Pydipati 被引量: 0发表: 0年 Homomorphic Filtering...
aincluding frequency domain analysis with high resolution image, texture processing, high resolution SSMC, interactive method between researcher and computer, neural network, etc 包括频域分析以高分辨率图象,纹理处理,高分辨率SSMC、交互式方法在研究员和计算机之间,神经网络等等[translate]...
A Dbrowski - Signal Processing: Algorithms, Architectures, Arrangements, & Applications 被引量: 0发表: 0年 PROCESS, ARRANGEMENTS AND SYSTEMS FOR PROVIDING FREQUENCY DOMAIN IMAGING OF SAMPLE PROCESS, ARRANGEMENTS AND SYSTEMS FOR PROVIDING FREQUENCY DOMAIN IMAGING OF SAMPLEPROBLEM TO BE SOLVED: To provi...