Image processing system

An image processing system comprising:

• an optical lens;
• a lens driver configured to move the optical lens;
• an image sensor configured to convert an optical signal transmitted from the optical lens into an electrical signal, to generate image data;
• and
• a processor configured to perform image signal processing on the image data,
• wherein the image sensor includes a pixel array including a plurality of pixels, each of the plurality of pixels includes a color filter, and the color filter includes a first color filter, a second color filter, and a third color filter, respectively configured to transmit light of different wavelengths, and pixels including the first color filter and pixels including the second color filter include at least one phase-detection (PD) pixel,
• wherein the image data includes a first color channel, a second color channel, and a third color channel, and
• wherein the processor is further configured to:
• based on a modeled relationship between a disparity and a position of the optical lens for each of the first color channel and the second color channel, and further based on a position of the optical lens at which sharpness of the third color channel is maximized, determine, for each of the first to third color channels, a movement distance of the optical lens according to the disparity;
• determine a disparity value and a weight for each of the first color channel and the second color channel from the image data, and
• apply the disparity value and the weight to the movement distance of the optical lens for each of the first color channel and the second color channel, to determine a final movement distance of the optical lens, and
• wherein the lens driver is further configured to move the optical lens according to the final movement distance of the optical lens.

An image processing system comprising:

• an optical lens;
• a lens driver configured to move the optical lens;
• and
• a processor configured to perform image signal processing on image data including a first color channel, a second color channel, and a third color channel,
• wherein the processor is further configured to:
• load a first function group including first linear functions that model a relationship between a disparity and a position of the optical lens for each of the first to third color channels, and load position information of the optical lens at which a sharpness of the third color channel is maximized;
• determine a reciprocal number of a slope of each of the first linear functions as a disparity conversion coefficient for each of the first to third color channels;
• and
• determine an offset value for each of the first to third color channels using an X-intercept of each of the first linear functions and the position information;
• generate, for each of the first to third color channels, second linear functions having the disparity conversion coefficient as a slope and the offset value as a Y-intercept, to generate a second function group;
• and
• control the lens driver to move the optical lens according to a final movement distance of the optical lens, which is obtained based on the second function group.