how to save image on which calculation are performed?

img = imread('Image');
gfrgb = imfilter(img, fspecial('gaussian', 3, 3), 'symmetric', 'conv');

cform = makecform('srgb2lab', 'AdaptedWhitePoint', whitepoint('d65'));
lab = applycform(gfrgb,cform);
l = double(lab(:,:,1)); lm = mean(mean(l));
a = double(lab(:,:,2)); am = mean(mean(a));
b = double(lab(:,:,3)); bm = mean(mean(b));
sm = (l-lm).^1.7 + (a-am).^3.5 + (b-bm).^0.8;
imshow(sm,[]);

how to save resultant image in ?

also gbvs images with this syntax show_imgnmap( img2 , map);

Answer 1

[Massimo Zanetti]

You can save your image sm as .png as follows:

imwrite(sm,'mySavedImage.png');

[Hash ir]

it's not saving properly image ?

[Adam]

You have to make sure your scaling is correct for the data type you save to. If you save as 'double' then values are expected to be between 0 and 1, for example.