19
Experiments
Introduction
Classification
Time-multiplexing
Spatial codification
Direct codification
Spatial Codification
•Spatial codification paradigm encodes a set of points
with the information contained in a neighborhood (called window) around
them
•The codification is condensed in a unique pattern
instead of multiplexing it along time
•The size of the neighborhood (window size) is proportional to the number of encoded points and inversely proportional to the number of used
colors
•The aim of these techniques is to obtain a one-shot measurement system Þ
moving objects can be
measured
• Advantages:
― Moving objects supported
― Possibility to condense the codification
into a unique pattern
• Drawbacks:
― Discontinuities on the object surface can
produce erroneous window decoding (occlusions
problem)
― The
higher the number of used colours, the more
difficult to correctly identify them when
measuring non-neutral coloured surfaces
Conclusions
