save image seen in imagesc

when i display input image using "imagesc", it shows in a different format compared to "imshow"

imagesc(Img,[0 255]); colormap(gray); %code i used

is it possible to save the image i view from imagesc to a variable so that i can use it for further processing

Answer 1

[Walter Roberson]

Use mat2grey()

[Walter Roberson]

scaled_Img = mat2gray(Img, [0 255]);

[Elysi Cochin]

sir, scaled_Img is exactly what i wanted. Is there any way to set the outer portions to white from scaled image (like if more white regions, set the outer pixels also to white). Will something like that work? If so how can i do that portion.

[Walter Roberson]

https://www.mathworks.com/help/images/ref/imclearborder.html

Take 255 minus the image. imclearborder. Take 255 minutes that result.

[Walter Roberson]

IM2 = 255 - imclearborder( 255 - scaled_Img );

Answer 2

[Image Analyst]

Try using imwrite() to save your indexed image:

imwrite(Img, filename);