A fast focus measure for video display inspection
Machine Vision and Applications
Enhanced low-light auto-focus system model in digital still and cell-phone cameras
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
A study on fast iris image acquisition method
CAIP'05 Proceedings of the 11th international conference on Computer Analysis of Images and Patterns
A real-time iris image acquisition algorithm based on specular reflection and eye model
ACIVS'05 Proceedings of the 7th international conference on Advanced Concepts for Intelligent Vision Systems
Auto-focusing in extreme zoom surveillance: a system approach with application to faces
ISVC'06 Proceedings of the Second international conference on Advances in Visual Computing - Volume Part I
A study on iris image restoration
AVBPA'05 Proceedings of the 5th international conference on Audio- and Video-Based Biometric Person Authentication
A new sampling method of auto focus for voice coil motor in camera modules
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
Analysis of focus measure operators for shape-from-focus
Pattern Recognition
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A passive AF algorithm for the digital still camera is proposed. As a class of hybrid processing techniques, the proposed algorithm utilizes the two different focus measures by which the best focused image is extracted via two stages. With the paraxial geometric optics model of image formation, some well-known focus measures are investigated and a robust focusing algorithm is designed based on them. The proposed algorithm has been successfully tested on a prototype digital still camera