An image acquisition apparatus comprising: an image sensor comprising a plurality of elements divided into a plurality of unit areas, each unit area formed with a red element outputting a signal corresponding to a red light, two green elements (1102, 1103) each outputting a signal corresponding to a green light, and a blue element outputting a signal corresponding to a blue light arranged in a matrix structure in a mosaic pattern; a driving unit is configured to move the image sensor by a pixel unit from a first position to a second position, a third position and a fourth position sequentially, wherein each pixel unit corresponds to the distance between neighbouring elements of the plurality of elements (1101 to 1104) of the image sensor; and an image processor is configured to receive a signal output from the red element, a signal output from each of the green elements (1102, 1103), and a signal output from the blue element in each of the plurality of positions, and to generate a single image of an object by combining the signals received at each of the first position, the second position, the third position and the fourth position, wherein the driving unit is further configured to move the image sensor from the first position to the second position in a first direction (di), to move the image sensor to the third position in a second direction that is perpendicular to the first direction, and to move the image sensor to the fourth position in a third direction that is perpendicular to the second direction and opposite to the first direction, and wherein to move the image sensor to each position, the driving unit is configured to move the image sensor in the plurality of directions (di, d2, d3, d4) using a plurality of rails (1191 to 1194) and a plurality of wheels (1196a to 1196d, 1197a to 1197d) that are drivable on a respective rail of the plurality of rails (1191 to 1194) in a straight line direction. an image sensor comprising a plurality of elements divided into a plurality of unit areas, each unit area formed with a red element outputting a signal corresponding to a red light, two green elements (1102, 1103) each outputting a signal corresponding to a green light, and a blue element outputting a signal corresponding to a blue light arranged in a matrix structure in a mosaic pattern; a driving unit is configured to move the image sensor by a pixel unit from a first position to a second position, a third position and a fourth position sequentially, wherein each pixel unit corresponds to the distance between neighbouring elements of the plurality of elements (1101 to 1104) of the image sensor; and an image processor is configured to receive a signal output from the red element, a signal output from each of the green elements (1102, 1103), and a signal output from the blue element in each of the plurality of positions, and to generate a single image of an object by combining the signals received at each of the first position, the second position, the third position and the fourth position, wherein the driving unit is further configured to move the image sensor from the first position to the second position in a first direction (di), to move the image sensor to the third position in a second direction that is perpendicular to the first direction, and to move the image sensor to the fourth position in a third direction that is perpendicular to the second direction and opposite to the first direction, and wherein to move the image sensor to each position, the driving unit is configured to move the image sensor in the plurality of directions (di, d2, d3, d4) using a plurality of rails (1191 to 1194) and a plurality of wheels (1196a to 1196d, 1197a to 1197d) that are drivable on a respective rail of the plurality of rails (1191 to 1194) in a straight line direction.