Patent ID: 11902497
Assignee: ARM LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A processor comprising:
an input module for obtaining at least a first frame and a second frame of image data, wherein the first frame of image data is captured at a first image sensor having a first focus configuration with a first focal length characteristic, and the second frame of image data is captured at a second image sensor having a second focus configuration with a second, different, focal length characteristic, the first frame of image data and second frame of image data being captured at a given time;
a determination module for determining:
a first distance of first object in the first frame of image data captured at the given time, based on the first focus configuration and a sharpness characteristic of the first object in the first frame; and
a second distance of a second, different, object in the second frame of image data captured at the given time, based on the second focus configuration and a sharpness characteristic of the second, different, object in the second frame;

an analysis module for analysing the first frame of image data captured at the given time and the second frame of image data captured at the given time to determine whether the sharpness characteristic of the first object in the first frame and the sharpness characteristic of the second, different, object in the second frame exceed a predetermined threshold;
an estimation module for estimating a distance of one or more further objects in the first frame of image data and second frame of image data captured at the given time, based on a difference between the sharpness characteristic of the first object in the first frame of image data captured at the given time, the sharpness characteristic of the second, different, object in the second frame of image data captured at the given time, and a sharpness characteristic of each of the further objects in the first frame of image data captured at the given time, and the second frame of image data captured at the given time;
a normalization module for normalizing depth information associated with the first distance of the at least one object, the second distance of the second, different, object, and the estimated distance of the one or more further objects; and
a generation module for generating a depth map based on the normalized depth information associated with the first distance of the first object, the second distance of the second, different, object, and the estimated distance of the one or more further objects,
wherein at least one of the first image sensor, or second image sensor comprises an autofocusing focus configuration, and the autofocussing focus configuration is used to determine an area of focus within a given frame of image data, and for identifying the first or the second, different, object within the scene, based on the area of focus.