Systems and methods region-of-interest automatic gain or exposure control

A device comprising:

• a non-transitory computer-readable medium;
• and
• a processor communicatively coupled to the non-transitory computer-readable medium, the processor configured to:
• receive a first image from an image sensor, the first image captured with a first field of view (FOV) and comprising a first plurality of pixels;
• apply first weights to the first plurality of pixels;
• receive a second image from the image sensor, the second image captured with a second FOV and comprising a second plurality of pixels;
• determine a region of interest (ROI) in the second image, the ROI in the second image comprising a subset of the second plurality of pixels in the second image;
• determine an ROI weight for the ROI in the second image, wherein the ROI weight for the ROI in the second image comprises a combination of the first weights applied to the first plurality of pixels and an ROI value;
• determine statistics based on the first plurality of pixels in the first image, the subset of the second plurality of pixels in the second image, and the ROI weight for the ROI in the second image;
• and
• adjust a gain or exposure setting for the image sensor based on the statistics.

A non-transitory computer-readable medium comprising processor-executable instructions configured to cause a processor to:

• receive a first image from an image sensor, the first image captured with a first field of view (FOV) and comprising a first plurality of pixels;
• apply first weights to the first plurality of pixels;
• receive a second image from the image sensor, the second image captured with a second FOV and comprising a second plurality of pixels;
• determine a region of interest (ROI) in the second image, the ROI in the second image comprising a subset of the second plurality of pixels in the second image;
• determine an ROI weight for the ROI in the second image, wherein the ROI weight for the ROI in the second image comprises a combination of the first weights applied to the first plurality of pixels and an ROI value;
• determine statistics based on the first plurality of pixels in the first image, the subset of the second plurality of pixels in the second image, and the ROI weight for the ROI in the second image;
• and
• adjust a gain or exposure setting for the image sensor based on the statistics.

An apparatus comprising:

• means for receiving a first image from an image sensor, the first image captured with a first field of view (FOV) and comprising a first plurality of pixels;
• means for applying first weights to the first plurality of pixels;
• means for receiving a second image from the image sensor, the second image captured with a second FOV and comprising a second plurality of pixels;
• means for determining a region of interest (ROI) in the second image, the ROI in the second image comprising a subset of the second plurality of pixels in the second image;
• means for determining an ROI weight for the ROI in the second image, wherein the ROI weight for the ROI in the second image comprises a combination of the first weights applied to the first plurality of pixels and an ROI value;
• means determining statistics based on the first plurality of pixels in the first image, the subset of the second plurality of pixels in the second image, and the ROI weight for the ROI in the second image;
• and
• means for adjusting a gain or exposure setting for the image sensor based on the statistics.