Thread Subject: save binary labeled images

Hallo there,

When I save with the command "imwrite" a binary labeled image then the
image is saved as a rgb image. That means that each pixel has an rgb
value like (0, 0, 0) for the black background and (255, 255, 255) for
the objects. But in the saved image there are not the labels for each
object.

This is my code:

image1 = imread('test_001.bmp');
thresh = graythresh(image1);
image = im2bw(image1, thresh);

E = bwlabel(image);

imwrite(E, 'ttt.bmp', 'bmp');

Is it possible to save a binary labeled image so that in each pixel is
the label that I give to it and NOT the rgb values?

Best regards,
Vicky

On Nov 8, 1:44=A0pm, Vicky <bonsa...@gmx.de> wrote:
> Hallo there,
>
> When I save with the command "imwrite" a binary labeled image then the
> image is saved as a rgb image. That means that each pixel has an rgb
> value like (0, 0, 0) for the black background and (255, 255, 255) for
> the objects. But in the saved image there are not the labels for each
> object.
>
> This is my code:
>
> image1 =3D imread('test_001.bmp');
> thresh =3D graythresh(image1);
> image =3D im2bw(image1, thresh);
>
> E =3D bwlabel(image);
>
> imwrite(E, 'ttt.bmp', 'bmp');
>
> Is it possible to save a binary labeled image so that in each pixel is
> the label that I give to it and NOT the rgb values?
>
> Best regards,
> Vicky

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BMP is 24 bit RGB. Try saving as TIFF format.