An input device comprising: an operation panel configured to receive an operation by at least one operating body located close to the operation panel, wherein a plurality of sections are virtually defined on the operation panel; a plurality of horizontal and vertical electrodes (150-EY, 150-EX)) arranged along the operation panel in a x-direction and a y-direction, respectively, the plurality of horizontal and vertical electrodes (150-EY, 150-EX) being spaced from the operation panel, each of the plurality of horizontal and vertical electrodes (150-EY, 150-EX) including two detection terminals; and an image data calculation unit connected to the two detection terminals, the image data calculation unit being configured to calculate image data values; wherein: in each of the plurality of sections, part of one of the plurality of horizontal electrodes (150-EY) and part of one of the plurality of vertical electrodes (150-EX) are arranged in proximity to part of the operation panel, each of the image data values varies in accordance with an amount of electric charge charged in the corresponding section by a capacitance between a corresponding electrode and the at least one operating body, and the image data calculation unit is configured to detect, for each of the detection terminals, a detection value varying in accordance with an amount of electric charge detected through a corresponding detection terminal of the detection terminals, each of the image data values is calculated for a corresponding section of the plurality of sections virtually defined on the operation panel, and the image data calculation unit is further configured to calculate the image data values based on a plurality of coefficient information values, each of the coefficient information values corresponding to one set of different sets of one of the sections and one of the detection terminals, and the each of the coefficient information values representing a ratio of an amount of electric charge detected through the detection terminal of the one set to an amount of electric charge charged in the section of the one set. an operation panel configured to receive an operation by at least one operating body located close to the operation panel, wherein a plurality of sections are virtually defined on the operation panel; a plurality of horizontal and vertical electrodes (150-EY, 150-EX)) arranged along the operation panel in a x-direction and a y-direction, respectively, the plurality of horizontal and vertical electrodes (150-EY, 150-EX) being spaced from the operation panel, each of the plurality of horizontal and vertical electrodes (150-EY, 150-EX) including two detection terminals; and an image data calculation unit connected to the two detection terminals, the image data calculation unit being configured to calculate image data values; wherein: in each of the plurality of sections, part of one of the plurality of horizontal electrodes (150-EY) and part of one of the plurality of vertical electrodes (150-EX) are arranged in proximity to part of the operation panel, each of the image data values varies in accordance with an amount of electric charge charged in the corresponding section by a capacitance between a corresponding electrode and the at least one operating body, and the image data calculation unit is configured to detect, for each of the detection terminals, a detection value varying in accordance with an amount of electric charge detected through a corresponding detection terminal of the detection terminals, each of the image data values is calculated for a corresponding section of the plurality of sections virtually defined on the operation panel, and the image data calculation unit is further configured to calculate the image data values based on a plurality of coefficient information values, each of the coefficient information values corresponding to one set of different sets of one of the sections and one of the detection terminals, and the each of the coefficient information values representing a ratio of an amount of electric charge detected through the detection terminal of the one set to an amount of electric charge charged in the section of the one set. in each of the plurality of sections, part of one of the plurality of horizontal electrodes (150-EY) and part of one of the plurality of vertical electrodes (150-EX) are arranged in proximity to part of the operation panel, each of the image data values varies in accordance with an amount of electric charge charged in the corresponding section by a capacitance between a corresponding electrode and the at least one operating body, and the image data calculation unit is configured to detect, for each of the detection terminals, a detection value varying in accordance with an amount of electric charge detected through a corresponding detection terminal of the detection terminals, each of the image data values is calculated for a corresponding section of the plurality of sections virtually defined on the operation panel, and the image data calculation unit is further configured to calculate the image data values based on a plurality of coefficient information values, each of the coefficient information values corresponding to one set of different sets of one of the sections and one of the detection terminals, and the each of the coefficient information values representing a ratio of an amount of electric charge detected through the detection terminal of the one set to an amount of electric charge charged in the section of the one set.