H,S,V components

Hello.How can I display the H,S,V components separately in matlab on the example below?Please,canyou help me?

Answer 1

[Maik]

Im = imread('peppers.png'); 

% Display RGB image

figure;imshow(Im); 

% Convert RGB to HSV 
hsvIm = rgb2hsv(Im); 

% Display HSV channels 

hChannel = hsvIm(:,:,1); 
figure;imshow(hChannel);

sChannel = hsvIm(:,:,2); 
figure;imshow(sChannel);

vChannel = hsvIm(:,:,3); 
figure;imshow(vChannel);

[John D'Errico]

@Maik

oops. You plotted the same channel, three times. Did you notice that all thee plots look amazingly similar? ;-)

[Maik]

Thanks changed it now. :)

[Aysel Alimirzayeva]

@Maik Thank you.

Answer 2

[John D'Errico]

trivial, really.

help rgb2hsv

 RGB2HSV Convert red-green-blue colors to hue-saturation-value.
    H = RGB2HSV(M) converts an RGB color map to an HSV color map.
    Each map is a matrix with any number of rows, exactly three columns,
    and elements in the interval 0 to 1.  The columns of the input matrix,
    M, represent intensity of red, green and blue, respectively.  The
    columns of the resulting output matrix, H, represent hue, saturation
    and color value, respectively.
 
    HSV = RGB2HSV(RGB) converts the RGB image RGB (3-D array) to the
    equivalent HSV image HSV (3-D array).
 
    CLASS SUPPORT
    -------------
    If the input is an RGB image, it can be of class uint8, uint16, single,
    or double. The output image is single when the input is single. For all 
    other input data types, the output image is double. If the input is a
    colormap, the input and output colormaps are both of class double.
 
    See also HSV2RGB, COLORMAP, RGBPLOT.

    Documentation for rgb2hsv
       doc rgb2hsv

    Other uses of rgb2hsv

       codistributed/rgb2hsv    gpuArray/rgb2hsv

So simply convert to HSV. Then you can use a tool like imshow

waves = imread('waves.jpg');
waves_HSV = rgb2hsv(waves);
imshow(waves_HSV(:,:,1))
title 'H channel'

imshow(waves_HSV(:,:,2))
title 'S channel'

imshow(waves_HSV(:,:,3))
title 'V channel'

Easy peasy.

[Aysel Alimirzayeva]

@John D'Errico Thank you very much.

Answer 3

[Image Analyst]

Use rgb2hsv and imsplit

hsvImage = rgb2hsv(rgbImage);
[hImage, sImage, vImage] = imsplit(hsvImage);

[Aysel Alimirzayeva]

@Image Analyst Thanks