초록 ▼

An imaging acquisition system that generates a picture depth from an auto focus curve generated from picture of a three dimensional spatial scene is described. The auto focus curve comprises a step edge. The system generates the depth based on the step edge and a reference auto focus normalization c

An imaging acquisition system that generates a picture depth from an auto focus curve generated from picture of a three dimensional spatial scene is described. The auto focus curve comprises a step edge. The system generates the depth based on the step edge and a reference auto focus normalization curve.

대표청구항 ▼

What is claimed is: 1. A computerized method comprising:receiving an auto focus curve that is associated with a picture of a three dimensional spatial scene, wherein the auto focus curves comprises a step edge; andcomputing, by a processor in a camera, a picture depth value using the step edge and a

What is claimed is: 1. A computerized method comprising:receiving an auto focus curve that is associated with a picture of a three dimensional spatial scene, wherein the auto focus curves comprises a step edge; andcomputing, by a processor in a camera, a picture depth value using the step edge and an auto focus normalization reference curve, wherein the auto focus normalization reference curve includes a plurality of points and correlates the step edge to a known amount of blurring, and wherein the computing a picture depth comprises,computing a defocus measurement value for a step edge in the auto focus curve using a one dimensional step edge gradient and a step edge center,deriving a picture blur value using the defocus measurement value and the auto focus normalization reference curve, andcomputing the picture depth value using the picture blur value.