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Autofocus window selection algorithm based on saliency detection
Chen, Guang1,2; Fan, Xuewu1
Conference Name6th International Conference on Optical and Photonic Engineering, icOPEN 2018
Source PublicationSixth International Conference on Optical and Photonic Engineering, icOPEN 2018
Conference Date2018-05-08
Conference PlaceShanghai, China
Contribution Rank1

Focus window selection is a very important step in the process of Auto-Focusing(AF). This paper proposes a new method for the selection of focus window, where a fast AF window selection algorithm based on image saliency region extraction is used to cut down the computation time and overcome the disturbance of the background in the automatic focusing system. Firstly, the salient object detection method based on the Minimum Barrier Plus(MB+) Transform algorithm is utilized to calculate the salient regions of the image in order to obtain a feature map. Secondly, a threshold method is used to de-noise the feature map. Then, correlation treatment method and boundary expansion method are used to build the focus window, of which the size and position are self-adaptive with the target. To the end, in this study, a comparison is made between the commonly used algorithm and the introduced window selection algorithm based on the improved MB + saliency detection in terms of accuracy and computation time. The result obtained indicates that our algorithm has better performance in highlighting the potential focus targets. And its better accuracy and less computation time make it suitable for tasks in general scenes and complex backgrounds. © 2018 SPIE.

KeywordAuto-focus Window Selection Saliency Detection Minimum Barrier Distance Self-adaptive
Indexed ByEI ; CPCI
WOS IDWOS:000450859600054
EI Accession Number20183305684091
Citation statistics
Document Type会议论文
Affiliation1.Xi'An Institute of Optics and Precision Mechanics Chinese Academy of Sciences, Xi'an; 710119, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Chen, Guang,Fan, Xuewu. Autofocus window selection algorithm based on saliency detection[C]:SPIE,2018.
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