Encryption domain content-based image retrieval and convolution through a block-based transformation algorithm.
Jia-Kai ChouChuan-Kai YangHsing-Ching ChangPublished in: Multim. Tools Appl. (2016)
Keyphrases
- image retrieval
- learning algorithm
- optimal solution
- preprocessing
- detection algorithm
- optimization algorithm
- simulated annealing
- dynamic programming
- computational cost
- linear transformation
- np hard
- similarity measure
- matching algorithm
- expectation maximization
- image database
- worst case
- cost function
- computational complexity
- significant improvement
- visual features
- search space
- feature space
- image matching
- objective function
- fast fourier transform
- matrix multiplication
- convolution kernel