Background: Some interpolators cannot be used in an image magnification problem in
a freely scalable form. For instance, when we want to magnify an image to a 16-time bigger scale,
some interpolators have to do this process in two steps including two 4-time magnification steps,
however, some are able to do it directly.
Methods: For generating data of this study, Matlab as a simulator has been used. Bi-linear (BL)
and cubic convolution (CC) interpolators are the two applied re-samplers in the reconstruction of
Results: Data shows that the performance of both free-size interpolators (BL and CC) is obviously
different in both direct and indirect pixel reconstruction.
Conclusion: The acquired data shows a less error in the condition of direct interpolation. The relative
results of experiments are d.ifferent from the type of core interpolators (BL and CC).