how to find spatial frequency of color image

16 次查看（过去 30 天）
mohammad shafi bhatt
评论： Image Analyst 2013-11-10
i have fused two images and now i want to find the spatial frequency of fused image can anyone please help

请先登录，再回答此问题。

回答（2 个）

Image Analyst
Image Analyst 2013-11-6
You can calculate the 2D FFT of an image. The image must be a 2D image, not a 3D color image. So you can convert that to gray scale using rgb2gray(), or you can use the red, green, or blue channel, or you can convert to another colorspace such as lab or hsv (using rgb2hsv() function) and then do the FFT of the h, s, or v channel. It all depends on what you want to do with the information once you get it.
  4 个评论
显示 2更早的评论
mohammad shafi bhatt
mohammad shafi bhatt 2013-11-10
CAN U PLEASE SEND ME THE CODE FOR FINDING SPATIAL FREQUENCY AND FUSION MUTUAL INFORMATION OF IMAGE PLZ ITZ URGENT THANKS WITH GREAT REGARDS
Image Analyst
Image Analyst 2013-11-10
I said you can use fft2() to get the spatial frequencies. I don't know what "fusion mutual information" is.

请先登录，再进行评论。

Jan
Jan 2013-11-6
You probably want to analyze the structure of the image's 2d fourier transform using fft2(). Either for each channel or after conversion to a gray image.

类别

在 Help Center 和 File Exchange 中查找有关 Modify Image Colors 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by