How to get the YUV value for each pixel?

6 次查看（过去 30 天）
Rachel
Rachel 2014-2-17
编辑： DGM 2021-11-4
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

请先登录，再回答此问题。

采纳的回答

Dishant Arora
Dishant Arora 2014-2-17
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 个评论
DGM
DGM 2021-11-3
编辑：DGM 2021-11-4
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:
https://www.mathworks.com/matlabcentral/answers/421371-is-there-a-direct-function-for-rgb-to-yuv-color-space-conversion-please-help
If actual YCbCr conversion is desired with margins, just use rgb2ycbcr().

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Convert Image Type 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