save image from imshow using imwrite

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Sebastian
Sebastian 2012-5-5
评论： Abu Kalam 2018-10-26
Hi all,
I'm using imshow(a,[]) to edit the intensity of a grayscale picture and plot it. I would like to save this brighter figure using imwrite(). I want this picture to be the same size as the original. I can't get this to work. I can't get imwrite to save the new figure.
I've tried to solve this problem using functions that do more or less the same thing, like mat2gray() and getframe(), but I just want to know how I can save the figure created by imshow() with imwrite() . This is the code:
h = imshow(inputimage,[]);
test = getimage(h);
imwrite(test,'imageoutput.tif');
I really hope someone can help me out.

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回答（2 个）

Image Analyst
Image Analyst 2012-5-5
imshow() does not allow you to edit the image. You can save the image by using imwrite(inputimage, filename); If you have other, missing code, such as adding annotation or applying a colormap or whatever, then use export_fig() as mentioned in the FAQ: 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.
Walter Roberson
Walter Roberson 2012-5-5
The File Exchange contribution http://www.mathworks.com/matlabcentral/fileexchange/7943 will convert the indexed image to truecolor that you can then imwrite()

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