Keyphrases
- medial axis
- learning environment
- shape analysis
- prior knowledge
- binary images
- collaborative learning
- collaborative inquiry
- mental models
- cognitive apprenticeship
- concept maps
- artificial intelligence
- thinning algorithm
- knowledge construction
- voronoi diagram
- neural network
- skeleton extraction
- graph matching algorithm
- online collaborative learning
- computer based learning environments
- distance transformation
- meta cognitive
- topological features
- object contours
- expert systems
- distance transform
- search engine
- e learning
- gray scale
- case study
- color images