[英]how to apply frequency domain filter on rgb image
如鏈接https://www.mathworks.com/matlabcentral/answers/uploaded_files/40966/salt_and_pepper_noise_removal_color.m 中所述,可以通過在空間域中應用 rgb 圖像的每個通道來完成應用 2D 過濾器。如下:
% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);
% Median Filter the channels:
redMF = medfilt2(redChannel, [3 3]);
greenMF = medfilt2(greenChannel, [3 3]);
blueMF = medfilt2(blueChannel, [3 3]);
在頻域的情況下如何將濾波器應用於rgb圖像?
定義您的采樣頻率; 定義您的截止頻率;
創建您的過濾器 - 示例 Butterworth
fc = 1;
fs = 10;
[b,a] = butter(6,fc/(fs/2));
對每個通道應用過濾器
dataOut = filter(b,a,double((rgbImage(:,:,1))));
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.