Vision sensors, image processing devices including the vision sensors, and operating methods of the vision sensors

A vision sensor, comprising:

• a pixel array comprising a plurality of pixels arranged in a matrix, each pixel of the plurality of pixels configured to generate one or more electrical signals in response to a change in intensity of incident light;
• and
• an event detection circuit configured to
• process one or more electrical signals received from the plurality of pixels, and generate event signals corresponding to the plurality of pixels, at which the change in intensity of the incident light is determined to have occurred, and
• control the generation of the event signals or transmission of the event signals when an amount of event signals exceed a threshold amount.

A vision sensor, comprising:

• a pixel array comprising a plurality of pixels arranged in a matrix, each pixel of the plurality of pixels configured to generate one or more electrical signals in response to a change in intensity of incident light;
• an event detection circuit configured to process one or more electrical signals received from the plurality of pixels, and generate event signals corresponding to the plurality of pixels, at which the change in intensity of the incident light is determined to have occurred;
• and
• an event rate controller configured to adjust an event detection threshold value based on an amount of event signals.