Method and apparatus for generating range subject distance image

Abstract

Apparatus for creating an image indicating distances to objects in a scene, including a modulated source of radiation, having a first modulation function, which directs radiation toward a scene; a detector which detects radiation from the scene, modulated by a second modulation function, and generates, responsive to the detected modulated radiation, signals responsive to the distance to regions of the scene; and a processor which forms an image having an intensity value distribution indicative of the distance of objects from the apparatus, and a controller modulates at least one of the first and second modulation functions based on the intensity value distribution indicative formed by the processor.

Description

Field of invention: [0001] The present invention relates generally to systems for generating three-dimensional images, and more particularly to the ability to capture images of a scene and determine distances to objects and parts of the objects in the scene. Background of the invention: [0002] Various techniques are known for generating a three-dimensional image of a scene, ie an image including depth information or distance information. Typical methods are time-of-flight measurements, phase detection and triangulation. These techniques typically require, for example, scanning the image with a laser beam to acquire depth data point by point. However, in many applications it is desired to obtain the depth information or distance information of the entire image at the same time. [0003] US Patent 5,200,793, incorporated herein by reference, describes a distance sensing array camera comprising a light source and a CCD or other detector array. The photoelectric modulator m...

AI Technical Summary

Problems solved by technology

The camera cannot determine various targets or different positions within a certain range

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