Pseudocolor image processing consists of assigning colors to gray values based on a specified criterion.
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Bit allocation is one of the three key problems for transform encoding techniques.
Boudary-based segmentation uses the similarity in gray levels in a region.
The sign of the first derivative can be used to determine whether an edge pixel lies on the dark or light side of an edge.
Which one does not belong to the research contents of digital image processing?
A. image encoding
B. image enhancement
C. image storage
D. image segmentation