Page 185 - Digital Analysis of Remotely Sensed Imagery

150 Cha pte r F i v e

Parameter Effect Graphic Illustration *
Z—sensor altitude Change in image scale

X, Y—sensor A different area is
location sensed; no change in
scale

Rotation along the Change in scale along y
flight direction Y-axis
(X-axis) (w)
x

Rotation along the Change in scale along y
Y-axis (f) X-axis

x

Rotation along the A different area is
Z-axis (k ) sensed

∗ Solid lines show the ground area covered without geometric distortion; dashed
lines show the area covered as a result of geometric distortion caused by one of the
parameters.
TABLE 5.1 Effect of Platform/Sensor Position and Orientation on Image Geometry

X-direction (the flight direction). Yaw is defined as the rotation
around the Z-axis (plumb direction). Unlike roll and pitch, yaw
exerts no direct impact on the geometry of the obtained image (e.g.,
no change in scale). Instead, a slightly different area from the