
If you use CTI, you run the risk of introducing excessive
emphasis on edges. Also, CTI operates only on the hori-
zontal dimension: Excessive CTI is liable to become
visible owing to perceptible (or even objectionable)
differences between the horizontal and vertical charac-
teristics of the image. CTI works well on cartoons, and
on certain other types of images. However, it should be
used cautiously.
Scan-velocity modulation (SVM)
CRT displays are subject to limitations of how fast the
electron beam can change from one state to another
(for example, from on to off). These limitations ...