how to save image

hai..

how to save image that pop up at frame show figure. I try to used this function,but the saved image not follow the dimension(X x Y) of original image.

saveas(gcf,'mask_image.jpg', 'jpg')

thank

Answer 1

[Jan]

Image = getframe(gcf);
imwrite(Image.cdata, 'mask_image.jpg');

Another method:

printf(gcf, '-djpeg100', 'mask_image.jpg', '-r0');

But the later is not guaranteed to have exactly the same size. There are some rounding effects between the units of the figure and the pixel resolution.

See: help print and help imwrite.

[Ahmed]

but..how to save image without is pop up that image in frame show figure.

for example

[image_height,image_width]=size(S);

BW=ones(image_height,image_width);

d=xor(BW,I1);

i want save image "d".

i do like this because i need image "d" in <450x479x3 uint8>.

From coding above I got image "d" in <450x479 logical>.

[Clinton Connelly]

You could just use the built-in "imwrite" function to save any loaded image, or specifically a 'uint8' file, to a file of any choice:

Image = imread("ImageName.jpg");
imwrite(Image, "NewImageName.jpg");

This code doesn't return the max resolution of the file, but there is a parameter for that:

Image = imread("ImageName.jpg");
imwrite(Image, "NewImageName.jpg", "Quality", 100) 

The interval of values for quality is between 0 and 100, inclusive, with the result being self-explanatory

Other information could be found in matlab by typing the input "help imwrite" and doing some reading...

There's also a text file called libtiffcopyright.txt, but I don't know where to find that