Method and Apparatus for Depth Image Estimation of Light Fields

摘要

Disclosed are a method and an apparatus for estimating a light field depth image. The method for estimating a depth image of a light field proposed according to the present invention comprises the steps of: measuring data costs by using an attribute of a light field image including an angle patch and a refocusing image to estimate data costs for a depth label candidate of a pixel of each patch; measuring consistency of a pixel color of each angle patch by calculating each entropy cost in order to calculate data costs in correspondence between pixels of each patch; measuring adaptive non-focus costs to obtain a pixel of each patch having consistency with respect to an occlusion phenomenon; and forming final data costs by normalizing and integrating each entropy cost and adaptive non-focus costs, by using the data costs measured using an attribute of a light field image, the data costs measuring suitability for a depth label candidate, and the data costs for maintaining flatness between adjacent pixels.