Patent ID: 11962946
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An image processing apparatus that generates a display image to be displayed in a display system including a display area, the image processing apparatus comprising:
an obtaining unit configured to obtain one input image acquired through shooting by one image capturing apparatus;
a generating unit configured to generate the display image from the input image on the basis of a correspondence between a first projection plane corresponding to the input image and a second projection plane corresponding to the display area; and
a holding unit configured to hold information indicating the correspondence,
wherein the correspondence is a correspondence calculated in accordance with a shooting field angle at which the input image has been captured and a view angle with which the display image is displayed in the display area with respect to a point-of-view position,
wherein the first projection plane has a size that is based on the shooting field angle,
wherein the second projection plane has a size that is based on the view angle,
wherein the correspondence is a relationship that is based on a ratio of a length of the first projection plane in a horizontal direction to a length of the second projection plane in the horizontal direction,
wherein the correspondence is a relationship in which positions at a predetermined interval on the first projection plane arc associated with corresponding positions on the second projection plane such that the corresponding positions are equally spaced,
wherein the first projection plane is a flat plane,
wherein the second projection plane is a plane formed by curving a flat plane in a horizontal direction, and
wherein the correspondence has a linearity relationship between a coordinate indicating a position of a point on the first projection plane and an angle indicating a position of a point on the second projection plane such that the coordinate indicating a position of a point of the first projection plane is equal to the sum of (a) a first constant multiplied by the angle indicating a position of a point of the second projection plane and (b) a second constant.