IMAGE SENSOR AND OPERATING METHOD OF IMAGE SENSOR

An image sensor includes an active pixel array in which a plurality of active pixels are arranged in a matrix, the active pixel array including a plurality of active regions including at least one active pixel, an optical black pixel array in which a plurality of optical black pixels are arranged in a matrix, the optical black pixel array including a plurality of optical black regions including at least one optical black pixel, a readout circuit configured to generate image data including pixel values by converting pixel signals generated from the plurality of active pixels into digital signals and generate black data including black pixel values by converting black signals generated from the plurality of optical black pixels into digital signals, and a dark level corrector configured to correct pixel values included in the image data.