Patent ID: 8149318

Claim:
A display apparatus comprising: a setting unit configure to set position information of an area to be subjected to display, in an image obtained by an image pickup unit; an image processing unit configured to extract a partial area of the image on the basis of the position information set by the setting unit; a display control unit configured to control to display the partial area extracted from the image by the image processing unit; a change-over unit configured to change over the partial area corresponding to the area to be subjected to display to a partial area of other image; and a calculation unit configured to calculate a specific position of the partial area of the other image such that ratios of respective longitudinal and lateral sizes in a display direction of the image before the change-over by the change-over unit to the specific position of the displayed partial area of the image before the change-over correspond respectively to ratios of longitudinal and lateral sizes in the display direction of the other image to the specific position of the partial area of the other image, and to set the partial area to be extracted from the other image, on the basis of a calculation result, wherein the image processing unit extracts the partial area set in the other image by the calculation unit, in response to the change-over by the change-over unit.