How to get the YUV value for each pixel?
2 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Hi everyone
I am new to matlab, so any help would be appreciated.
I have an image and I need to get the YUV value for each pixel in the image.
Can anyone help? Thanks in advance
0 Commenti
Risposta accettata
Dishant Arora
il 17 Feb 2014
if you have a RGB image you can convert it into YUV using below mentioned equations:
Y = R*(0.299000) + G*(0.587000) + B*(0.114000);
U = R*(-0.168736) + G*(-0.331264) + B*(0.500000) + 128;
V = R*(0.500000) + G*(-0.418688) + B*(-0.081312) + 128;
2 Commenti
DGM
il 3 Nov 2021
Modificato: DGM
il 4 Nov 2021
That's not YUV. That's more or less YPbPr, or YCbCr without the margins. The offset implies that the RGB image is uint8-scaled, though if it were actually uint8, the operations would result in severe data truncation. The only case in which this would work is if R,G,and B were uint8-scaled floating-point data.
This covers general luma-chroma conversions, including YUV:
If actual YCbCr conversion is desired with margins, just use rgb2ycbcr().
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Convert Image Type in Help Center e File Exchange
Prodotti
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!