“…Light field depth estimation has become a popular research topic and plays a more and more important role in a wide range of applications, such as scene reconstruction [18], image super-resolution [31,41], object tracking [42], saliency detection [30], image segmentation [47]. According to the input data type, existing depth estimation methods from light field can be categorized into three types: depth estimation based on epipolar plane images (EPIs) [19,12], depth estimation based on sub-aperture images (sub-apertures) [37,40] and depth estimation based on the focal stack [28,36,23]. The EPIs-based depth estimation explores geometry structures in EPIs to capture the depth information.…”