DEPTH ESTIMATION FROM IMAGE DEFOCUS USING MULTIPLE RESOLUTION GAUSSIAN DIFFERENCE

A blur estimation method and apparatus which utilizes Gaussian differences at multiple resolutions, upon which iterative convolution is performed to match sharpness measures between two images. Blur differences are combined with an iteration number selected from multiple resolution levels based on c...

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Bibliographic Details
Main Authors Li Pingshan, Tu Xue
Format Patent
LanguageEnglish
Published 06.10.2016
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:A blur estimation method and apparatus which utilizes Gaussian differences at multiple resolutions, upon which iterative convolution is performed to match sharpness measures between two images. Blur differences are combined with an iteration number selected from multiple resolution levels based on comparing a sharpness ratio as the blur difference estimate. Blur difference estimate is then applied through a depth model to arrive at a depth estimate. Blur difference depth estimation can be utilized for controlling operation of focus control hardware in an imaging device.
Bibliography:Application Number: US201514675287