ASTIGMATIC DEPTH FROM DEFOCUS IMAGING

摘要

A rangefinder has a depth camera and a computer. The depth camera is positioned to receive electromagnetic energy from a scene. Imaging optics and a sensor in the camera generate an input image based on electromagnetic energy. The computer receives the input image, calculates intermediate images by applying differentiation operators along different axes to the input image, creates a merit function map, and computes a depth map from the merit function map.

主权项

1. An apparatus comprising a rangefinder, said rangefinder comprising a depth camera and a computer, wherein said depth camera is positioned to receive electromagnetic energy from a scene, wherein said depth camera comprises imaging optics and a sensor configured to generate an input image based on said electromagnetic energy, and wherein said computer is programmed to receive said input image, to calculate a first intermediate image from said input image, to calculate a second intermediate image from said input image, to create a merit function map based on said first and second intermediate images, and to compute a depth map from the merit function map.