1. A display apparatus, comprising: an input unit configured to input an image to be displayed; a determination unit configured to determine whether the input image is an image obtained by a 2-3 pull down method; an I/P conversion unit configured to, when the input image is an image obtained by the 2-3 pull down method, convert the input image from an interlaced image to a progressive image; a double speed frame unit configured to convert, when the input image is an image obtained by the 2-3 pull down method, frames of the progressive image converted by the I/P conversion unit; a display unit configured to replace at least one of frame images converted by the double speed frame unit with a different image, and display the frame images while inverting the electrical polarity thereof on a frame-by-frame basis; and a correction unit configured to correct frame images to a high-frequency emphasized image in which a high-frequency component is emphasized, and a low-frequency image composed of a low-frequency component, wherein the display unit replaces at least one of a plurality of frame images with the high-frequency emphasized image and at least one of the plurality of frame images with the low-frequency image, and displays the frame images while inverting the electrical polarity thereof on a frame-by-frame basis.