All in Focus Image Generation based on New Focusing Measure Operators
| Autor: | Hossam Eldeen Moustafa Shamardan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Sequence
General Computer Science Pixel Computer science 02 engineering and technology 01 natural sciences Measure (mathematics) Image (mathematics) 010309 optics Operator (computer programming) 0103 physical sciences 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Spatial frequency Focus (optics) Algorithm |
| Zdroj: | International Journal of Advanced Computer Science and Applications. 7 |
| ISSN: | 2156-5570 2158-107X |
| DOI: | 10.14569/ijacsa.2016.071217 |
| Popis: | To generate an all in focus image, the Shape-From-Focus (SFF) is used. The SFF key is finding the optimal focus depth at each pixel or area in an image within sequence of images. In this paper two new focusing measure operators are suggested to be used for SFF. The suggested operators are based on modification for the state of art tool for time-frequency analysis, the Stockwell Transform (ST). The first operator depends on Discrete Orthogonal Stockwell Transform (DOST) which represents a pared version of ST, while the other depends on Pixelwise DOST (P-DOST) which provides a local spatial frequency description. Both of the operators provides the computational complexity and memory demand efficiency compared to the operator depending on ST. A comparison between the suggested operators to operators based on ST are performed and showed that the suggested operators’ performances are as analogous to that of ST. |
| Databáze: | OpenAIRE |
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