Imaging sensor with brightness self-adjustment

An image sensor having a brightness self-adjust capability is provided. The image sensor can include a light adjustment layer made of adaptive optical materials and a set of pixels. The image sensor can also include a control circuit configured to generate control signals to control adjustment of one or more light transparency levels at the set of pixels on the light adjustment layer based on the light intensity distribution. The image sensor can further include a sensor array configured to receive lights and facilitate output of image and/or video signals based on the received lights. For facilitating light adjustment, the control circuit can be configured to obtain light intensity distribution from a pre-sensor or the sensor array.