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.
Materials and 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 digital images.
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 different from the type of core interpolators (BL and CC).