Figure 3-2 shows the geometric resampling. All pixel addresses in the Level-1 coordinate system are transformed into the realigned (stagger-corrected) Level-0B coordinates using one, four or sixteen pixel addresses, depending on resampling methods selected. Prior to resampling, DN values of bad pixels are evaluated by linear interpolation from the adjacent pixels, followed by the destriping correction.

Resampling is carried out using the radiometric coefficients of detectors. The nearest neighbor (NN), the bi-linear (BL) and the cubic convolution (CC) methods are available types of resampling. Finally the radiance is converted to DN value using the radiance conversion coefficient which are stored in the radiometric data base file.

Figure 3-2 Geometric Resampling