Promblem video setup as RGB but show in axes but not show in RGB axes show grayscale instead

I want to show video as RGB but axes show grayscale color instead

RGB2GRAY only accepts a Mx3 matrix for MAP or a MxNx3 input for RGB.

Answer 1

[Walter Roberson]

Change

data = rgb2gray (getdata(vid,2));

to

temp = getdata(vid,2);
data = cat(3, rgb2gray(temp(:,:,:,1)), rgb2gray(temp(:,:,:,2)));

[Adisorn Phanukthong]

thank you sir

[Adisorn Phanukthong]

Please explain in

temp = getdata(vid,2);
data = cat(3, rgb2gray(temp(:,:,:,1)), rgb2gray(temp(:,:,:,2)));

[Walter Roberson]

Small correction:

data = cat(4, rgb2gray(temp(:,:,:,1)), rgb2gray(temp(:,:,:,2)));

getdata(vid,2) says to fetch 2 frames. That will give you MxNx3x2 . Assign that to a temporary variable. Now take each MxNx3 slice of it and convert each one through rgb2gray, producing something that is MxNx1 . Now splice them along the 4th dimension to get somehting MxNx1x2

[Adisorn Phanukthong]

thank you for good knowledge

Answer 2

[Image Analyst]

Make sure the output format of the camera is RGB and not monochrome/grayscale.