Method of operating assessment device assessing color distortion of image sensor

A method of operating an assessment device which is configured to communicate with an image sensor and comprises an input buffer and a processor, the method comprising:

• receiving, by the input buffer, raw image data from the image sensor that is configured to capture a test chart;
• generating, by the processor, replacement color information based on the raw image data and a reference chart;
• generating, by the processor, color reconstruction image data by reconstructing a color of the raw image data based on the replacement color information;
• and
• assessing, by the processor, color distortion of the image sensor based on the color reconstruction image data and the raw image data.

A method of operating an assessment device which is configured to communicate with an image sensor and comprises an input buffer and a processor, the method comprising:

• receiving, by the input buffer, raw image data from the image sensor that is configured to capture a test chart;
• generating, by the processor, restored image data by restoring a false color or decolorization of the raw image data;
• and
• assessing, by the processor, color distortion of the image sensor based on the restored image data and the raw image data,
• wherein the test chart comprises a linear pattern in which probabilities of the linear pattern having a position, a length, and a slope are uniform and a probability of the linear pattern having a thickness exponentially decreases as the thickness of the linear pattern decreases.