Light sensor chip adaptable to low illumination environment
AssigneePixart Imaging Inc.
InventorGUO-ZHEN WANG
Life of this patent
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Abstract
There is provided an image processing device including a light sensor and a processor. The light sensor is used to detect light and output an image frame. The processor identifies intensity of ambient light according to an image parameter associated with the image frame. When the ambient light is identified to be strong enough, the processor performs an object identification directly using the image frame. When the ambient light is identified to be not enough, the processor firstly converts the image frame to a converted image using a machine learning model, and then performs the object identification using the converted image.
Claims17
A light sensor chip, comprising:
- a light sensor configured to detect light using a first exposure time to output a first image;
- and
- a processor electrically connected to the light sensor to receive the first image, and configured to
- identify ambient light intensity according to an image parameter associated with the first image,
- control the light sensor to detect light using a second exposure time, longer than the first exposure time, to output a second image upon identifying that the ambient light intensity is weak via comparing the ambient light intensity with a threshold, and
- convert, using a pre-stored learning model, the second image into a converted image.
A light sensor chip, comprising:
- a light sensor configured to detect light using a first exposure time to output a first image;
- and
- a processor electrically connected to the light sensor to receive the first image, and configured to
- control the light sensor to detect light using a second exposure time, longer than the first exposure time, to output a second image upon identifying that a gain value for amplifying the first image is not smaller than a gain threshold, and
- convert the second image into a converted image using a pre-stored learning model.
A light sensor chip, comprising:
- a light sensor configured to detect light using a first exposure time to output a first image;
- and
- a processor electrically connected to the light sensor to receive the first image, and configured to
- identify ambient light intensity according to an image parameter associated with the first image,
- control the light sensor to enter a weak light mode and detect light using a second exposure time, longer than the first exposure time, to capture a second image upon identifying that the ambient light intensity is weak via comparing the ambient light intensity with a threshold, and
- convert, using a pre-stored learning model, the second image into a converted image to be outputted upon a blurring of the second image is smaller than a blurring threshold.
Dependencies are inferred from the claim text.