Image sensor

An image sensor comprising:

• processing circuitry configured to generate initial image data in units of sub-frames by reading out electrical signals from a pixel array, the pixel array including a plurality of pixels each configured to convert optical signals into the electrical signals;
• and
• a memory configured to store the initial image data, wherein
• the processing circuitry is further configured to,
• generate first image data based on the initial image data, the generating the first image data including merging the initial image data of each of m sub-frames included in a frame according to a plurality of sub-exposure times included in a first exposure time associated with the frame, wherein m is a positive integer,
• generate event data corresponding to each of the m sub-frames based on the initial image data corresponding to each of the m sub-frames, and
• generate output data by sequentially packing the first image data and the event data.

An image sensor comprising:

• a pixel array including at least one complementary metal-oxide semiconductor (CMOS) image sensor (CIS) pixel and at least one dynamic vision sensor (DVS) pixel, the at least one CIS pixel configured to convert optical signals into electrical signals, and the at least one DVS pixel configured to generate event signals by sensing a change in intensity of the optical signals;
• and
• processing circuitry configured to,
• generate first image data based on the electrical signals, the first image data having a first frame rate,
• generate event data based on the event signals, the event data having a second frame rate higher than the first frame rate of the first image data, and
• generate output data by sequentially packing the first image data and the event data corresponding to an exposure time of the first image data-,
• wherein the processing circuitry is further configured to,
• generate second image data corresponding to a plurality of sub-frames of an image frame, the plurality of sub-frames corresponding to a plurality of sub-exposure times included in a first exposure time associated with the first image data,
• merge at least a portion of the second image data corresponding to each of the plurality of sub-frames to generate the first image data, and
• generate the event data corresponding to each of the plurality of sub-frames based on the second image data generated from the plurality of sub-frames and the second image data generated from at least one reference frame continuous with each of the plurality of sub-frames.