How to save an image displayed ?

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Pramod Bhat 2011-10-20

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Dear friends, i would like to save an image displayed by imshow(I) command in tif format. for example, ifter displaying the image, i select an interactive ROI using "imfreehand(gca", them i wud like to save the image with that RIO borders. when whenever i try this, it is saving its borders also with the image. I dont want that border frame to be saved. may you plz help ? the image shud be saved in .tif format only...

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Answer 1

Image Analyst 2011-10-20

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The saved image must be rectangular, no matter what your freehand ROI looks like, but the outer layer of pixels shouldn't be white unless you're cropping the image and then setting them white. You are using imwrite() to save the cropped portion aren't you?

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Pramod Bhat 2011-10-20

I agree that the saved image should be rectangular irrespective of the ROI. But I want the displayed image to be saved. but when u save it, it ll add and extra frame to the image WHICH IS UNWANTED. I want the core image to be saved.

Im telling u my need another way. I just want the ROI curve to be superimposed on the original image and to be saved. I don want any extra frame or background.

Thanking you…

Image Analyst 2011-10-21

OK let me ask again as simply and explicitly as I can:

"Are you using the function imwrite() to save your image to disk?"

Please answer.

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Answer 2

Grzegorz Knor 2011-10-20

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https://ww2.mathworks.cn/matlabcentral/answers/18789-how-to-save-an-image-displayed#answer_25197

在 MATLAB Online 中打开

I'm not sure if I understood you well:

figure, imshow('pout.tif');
h = imfreehand(gca); 
.
.
.
axis off
print('-dtiff','-r200',filename)

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Pramod Bhat 2011-10-20

thanq....but while saving, it is saving that inmage with it's border(white frame around the image) also...i don want that border to be saved. i want only that with the ROI to be saved.

may u plz help..

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