Low pass filter on Y U and V bands

1 次查看（过去 30 天）
rest12
rest12 2013-10-16
编辑： Yatin 2013-10-17
I want to implement low pass filter on Y, U and V bands of image by a factor of 3 in both horizontal and vertical directions. I write a code but i want to confirm that whether the code which I write is correct or not? Please confirm. Code is written below:
rgbImage = imread('fav.png');
R = rgbImage(:, :, 1);
G = rgbImage(:, :, 2);
B = rgbImage(:, :, 3);
Y = 0.299*R + 0.587*G + 0.114*B;
U = - 0.14713*R - 0.28886*G + 0.436*B;
V = 0.615*R - 0.51499*G - 0.10001*B;
subplot(2,2,1);
imshow(rgbImage);
title('Original Image');
hsize = 3;
H = fspecial('average', hsize);
filteredY = imfilter(Y, H);
subplot(2,2,2);
imshow(filteredY);
title('filteredY');
filteredU = imfilter(U, H);
subplot(2,2,3);
imshow(filteredU);
title('filteredU');
filteredV = imfilter(V, H);
subplot(2,2,4);
imshow(filteredV);
title('filteredV');

请先登录，再回答此问题。

采纳的回答

Yatin
Yatin 2013-10-17
编辑：Yatin 2013-10-17
Hello,
Your code seems to work correctly and it certainly does low-pass filtering on Y, U and V. You can also however, try using the gaussian low pass filter and compare the result for different sigma values with the results from the averaging filter.
You can have a look at the documentation here:
http://www.mathworks.com/help/images/ref/fspecial.html

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Category Classification 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by