Wide-angle image providing method

A method of providing a wide-angle image, comprising:

• a photographing step of generating, by a first camera module, a first area image of a first area, generating, by a second camera module, a second area image of a second area neighboring a right of the first area, generating, by a third camera module, a third area image of a third area neighboring a lower side of the first area, and generating, by a fourth camera module, a fourth area image of a fourth area neighboring a lower side of the second area and a right of the third area;
• a distortion calibration step of calibrating, by a distortion calibration unit, distortion of each of the first, second, third and fourth area images;
• a phase difference calibration step of calibrating, by a phase difference calibration unit, a phase difference of each of the first, second, third and fourth area images whose distortion has been calibrated;
• an overlap calibration step of calibrating, by an overlap calibration unit, the first, second, third and fourth area images whose phases have been calibrated in an overlap manner so that the first, second, third and fourth area images neighbor each other;
• and
• a color calibration step of calibrating, by a color calibration unit, a color of the superimposed and calibrated overlap image.

A method of providing a wide-angle image, comprising:

• a photographing step of generating, by a first camera module, a first area image of a first area, generating, by a second camera module, a second area image of a second area neighboring a right of the first area, generating, by a third camera module, a third area image of a third area which is an opposite side of the first area, and generating, by a fourth camera module, a fourth area image of a fourth area which is an opposite side of the second area and neighbors a left of the third area;
• a distortion calibration step of calibrating, by a distortion calibration unit, distortion of each of the first, second, third and fourth area images;
• a phase difference calibration step of calibrating, by a phase difference calibration unit, a phase difference of each of the first, second, third and fourth area images whose distortion has been calibrated;
• an overlap calibration step of calibrating, by an overlap calibration unit, the first, second, third and fourth area images whose phases have been calibrated in an overlap manner so that the first, second, third and fourth area images neighbor each other;
• and
• a color calibration step of calibrating, by a color calibration unit, a color of the superimposed and calibrated overlap image.