how can i obtain a clear image from a set of 180 images

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Yazan Awwad
Yazan Awwad 2013-11-16
评论： Yazan Awwad 2013-11-23
I have a series of images produced by an ultrasound machine. The images are of an eraser. the position of the eraser is in a different as the ultrasound probe moves. I did image registration to register all of the images in respect to frame 1 (I have a total of 180 images). the intensities of the pixels of the eraser are not consistent between the frames. I took the average of the 180 images and the output image was blurred. I was wondering if u can suggest away to me so that I can get a clearer image out of the 180 images other than averaging them. Thank you in advance

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Image Analyst
Image Analyst 2013-11-16
See section 20.12 here for algorithms: http://iris.usc.edu/Vision-Notes/bibliography/contentsmedical.html#Medical%20Applications,%20CAT,%20MRI,%20Ultrasound,%20Heart%20Models,%20Brain%20Models. Pick on, code it up, and come back here if you have questions.
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Image Analyst
Image Analyst 2013-11-18
Does the scene move between frames? If not, I don't see why averaging frames would produce blur. If they do move, reduce noise on each frame, then call imregister() to align them all, then do averaging.
Yazan Awwad
Yazan Awwad 2013-11-23
The eraser is what moves, but using phase correlation I aligned all the images (see examples at this link: http://www.mathworks.co.uk/matlabcentral/answers/105504-remove-out-of-place-pixel-values ). After i averaged them all, the output image was blurred. Is it may be because i am doing the registration incorrectly. Can u plz take a look at the sample images and probably let me know what is going wrong? Thank you

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