interpolation between 2 images

hi everyone i have 2 grayscle images of ct scan how can i priduce an image between these 2 images by spline,nearest or linear methods?

[Adam]

If you mean an image that combines the two then a mean, max or min between the two would do this, but it depends what effect you are looking for. Spline interpolation needs at least 3 points so I don't see how this would work for just 2 images.

[tala]

thanks for your attention for example i have 9 frames of echocardiography in 9 time indexes, and i want to have 18 frames instead, so i have to produce one frame between each two consecutive frames to make the number of frames double

[naveen venugopal]

hi Tala, I am working on the same problem. Did you check the possibilities of imwrap() can you share your experience?

Answer 1

[Image Analyst]

Like Adam says, you can just take the average of the two. This will average intensities but it does not move structures laterally/spatially like a morphing/warping would. To do that you'd need to identify landmarks in the initial and final image and then use imwarp() or something to warp the image.