Hi i have the following code ? How i can save a file which i show by'imshow' function?

I1=imread('G:\ethanol+water flame 2 images\ethanol+ water flame 2\ethanol+ water flame 2001395.jpg');
I2=figure,imshow(I1,[low high]);
if low<=60 && high>=90
end
    save I2
I3=edge(I2,'canny');
figure,imshow(I3)

Answer 1

[Image Analyst]

Not sure what you mean by "save a file" but you can use imwrite to save a variable as a file:

imwrite(I3, 'Edge Image.png');

or you can save the whole figure, which would include any annotation (text, arrows, etc.), tick marks, etc. in the overlay by using export_fig(): http://matlab.wikia.com/wiki/FAQ#How_do_I_save_my_figure.2C_axes.2C_or_image.3F_I.27m_having_trouble_with_the_built_in_MATLAB_functions.

[saras]

very very thank you sir.Now i can save the image and make further operation on it. Now I've to do image edge detection and trace boundary operation.

[Andreas Goser]

+1 vor your guessing skills

[saras]

Hi i have to extract a portion from an image.I have the following co-ordinates x=[153 259 153 259] y=[393 393 474 474] I'm not sure to use which function?Plz help me

Answer 2

[Andreas Goser]

To save figures created with IMSAVE, there is no other way than with standard figures. See the doc for SAVEAS and PRINT.