Abstract: Provided is a method of operating an assessment device which communicates with an image sensor and includes an input buffer and a processor, the method including receiving, by the input buffer, raw image data from the image sensor that is configured to capture a test chart, generating, by the processor, conversion image data based on color domain transformation of the raw image data, generating, by the processor, estimation image data by estimating a non-distorted image based on the conversion image data, and assessing, by the processor, color distortion of the image sensor based on the estimation image data and the conversion image data.

Abstract: An under-display camera is provided, wherein an image acquisition unit including the under-display camera is configured to generate an evaluation image based on a first light, by using an imaging unit including an image sensor. The first light is output by a light emitting unit, including a light source, and passes through a display panel. The under-display camera is controlled based on a result of evaluating a performance of the under-display camera, the result being obtained by calculating a feature value based on the evaluation image, calculating a reference value based on a reference image, and comparing the feature value with the reference value, the reference image being obtained based on a second light output by the light emitting unit, the second light not passing the display panel.

Abstract: An under-display camera is provided, wherein an image acquisition unit including the under-display camera is configured to generate an evaluation image based on a first light, by using an imaging unit including an image sensor. The first light is output by a light emitting unit, including a light source, and passes through a display panel. The under-display camera is controlled based on a result of evaluating a performance of the under-display camera, the result being obtained by calculating a feature value based on the evaluation image, calculating a reference value based on a reference image, and comparing the feature value with the reference value, the reference image being obtained based on a second light output by the light emitting unit, the second light not passing the display panel.