Digital Signal Processing Reference
In-Depth Information
Old 4:3 video on HDTV
Films on HDTV
Figure 5.10.
Better results occur when the movie makers convert their film
aspect ratio to a 16:9 aspect ratio
sometimes known as
anamorphic widescreen. This is generally labeled on the DVD.
1.78:1
16:9
WIDESCREEN VERSION
e
5.4 Conclusion
Video scaling is probably one of the most common video
processing techniques. It is used in a variety of applications
e
ranging from HDTV to medical, surveillance and conferencing
systems. Done correctly, this is computationally intensive pro-
cessing which has to be done at the video frame rate. It demands
dedicated hardware and/or a fast FPGA to implement at
acceptable quality and at fast frame rates.
