Azzera filtri
Azzera filtri

Low pass filter on Y U and V bands

5 visualizzazioni (ultimi 30 giorni)
rest12
rest12 il 16 Ott 2013
Modificato: Yatin il 17 Ott 2013
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');
  1 Commento
Walter Roberson
Walter Roberson il 17 Ott 2013
When you display the bands, what colormap are you wanting to use?

Accedi per commentare.

Risposta accettata

Yatin
Yatin il 17 Ott 2013
Modificato: Yatin il 17 Ott 2013
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:

Più risposte (0)

Prodotti

Community Treasure Hunt

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

Start Hunting!

Translated by