Improved phase gradient autofocus algorithm based on segments of variable lengths and minimum entropy phase correction.
Ahmed AzouzZhenfang LiPublished in: ChinaSIP (2014)
Keyphrases
- improved algorithm
- learning phase
- learning algorithm
- preprocessing phase
- optimal solution
- times faster
- cost function
- high accuracy
- similarity measure
- expectation maximization
- preprocessing
- iterative process
- classification algorithm
- detection algorithm
- theoretical analysis
- fourier domain
- gradient information
- multiscale
- np hard
- k means
- equal length
- gradient vectors
- recognition algorithm
- convergence rate
- matching algorithm
- optimization algorithm
- linear programming
- simulated annealing
- worst case
- probabilistic model
- image processing