Reading Fractions of a pixel in Image

Upon inputting an image into Matlab using imread(), Matlab allows you to read the intensity value associated with a single pixel e.g. a 25x25 image has 625 pixels each with an individual pixel intensity value. My question is whether it is possible to take into account a fraction of a pixel, e.g. 0.5 of a pixel rather than 1 pixel at a time.

Answer 1

[Image Analyst]

You can call imresize() to get the size you need so that the locations you want lie on integer indexes. If you have some oddball (x,y) then you'll need to interpolate yourself specifically for that particular location.