Keyphrases
- learning algorithm
- high accuracy
- optimal solution
- worst case
- preprocessing
- computational cost
- k means
- tree structure
- cost function
- matching algorithm
- times faster
- computational complexity
- similarity measure
- experimental evaluation
- expectation maximization
- optimization algorithm
- color palette
- binary images
- theoretical analysis
- detection algorithm
- clustering method
- dynamic programming
- np hard
- significant improvement
- search space
- recognition algorithm
- color constancy
- color image segmentation
- gradient information
- color quantization
- image sequences