together to smooth out the transition from one to the next [13]. Blending can be
done using a weighted average in the overlapping areas, where the weights taper
off to zero at the image borders [14]. This produces a more seamless appearance
and makes the images easier to interpret. Geometric and radiometric corrections
applied to the input images make automatic mosaicing possible [15].
5.6 Summary of Important Points
1. Geometric operations warp an image, changing the positions of the
objects within.
2. Geometric operations include translation, rotation, and scaling as well as
more general transformations.
3. A geometric transformation can be specified by a formula or by a control
grid.
4. Geometric operations are implemented by mapping output pixel