Image processing apparatus and image processing method

An image processing method, comprising:

• in an image processing apparatus:
• generating a first texture image of a specific viewpoint, based on each of a second texture image of a first viewpoint, a third texture image of a second viewpoint, a first depth image corresponding to the second texture image, and a second depth image corresponding to the third texture image, wherein
• the second texture image is obtained based on projection of a first rear face of a polygon to a first projection face with respect to the first viewpoint,
• the third texture image is obtained based on projection of a second rear face of the polygon to a second projection face with respect to the second viewpoint,
• the first projection face is perpendicular to a first sight line direction,
• the second projection face is perpendicular to a second sight line direction,
• the first sight line direction is from the first viewpoint to a center of the polygon,
• the second sight line direction is from the second viewpoint to the center of the polygon,
• the first viewpoint and the second viewpoint are opposed to each other across the center of the polygon,
• the second texture image corresponds to a first reconstructed portion of the polygon,
• the third texture image corresponds to a second reconstructed portion of the polygon, and
• each of the first reconstructed portion of the polygon and the second reconstructed portion of the polygon is greater than one-half of the polygon.

An image processing apparatus, comprising:

• a central processing unit (CPU) configured to:
• generate each of a first texture image of a first viewpoint and a second texture image of a second viewpoint, wherein
• the generation of the first texture image is based on projection of a first rear face of a polygon to a first projection face with respect to the first viewpoint,
• the generation of the second texture image is based on projection of a second rear face of the polygon to a second projection face with respect to the second viewpoint,
• the first projection face is perpendicular to a first sight line direction,
• the second projection face is perpendicular to a second sight line direction,
• the first sight line direction is from the first viewpoint to a center of the polygon,
• the second sight line direction is from the second viewpoint to the center of the polygon,
• the first viewpoint and the second viewpoint are opposed to each other across the center of the polygon,
• the first texture image corresponds to a first reconstructed portion of the polygon,
• the second texture image corresponds to a second reconstructed portion of the polygon, and
• each of the first reconstructed portion of the polygon and the second reconstructed portion of the polygon is greater than one-half of the polygon;
• and
• generate a first depth image and a second depth image,
• wherein the first depth image corresponds to the first texture image and the second depth image corresponds to the second texture image.

An image processing method, comprising:

• in an image processing apparatus:
• generating each of a first texture image of a first viewpoint and a second texture image of a second viewpoint, wherein
• the generation of the first texture image is based on projection of by projecting a first rear face of a polygon to a first projection face with respect to the first viewpoint,
• the generation of the second texture image is based on projection of a second rear face of the polygon to a second projection face with respect to the second viewpoint,
• the first projection face is perpendicular to a first sight line direction,
• the second projection face is perpendicular to a second sight line direction,
• the first sight line direction is from the first viewpoint to a center of the polygon,
• the second sight line direction is from the second viewpoint to the center of the polygon,
• the first viewpoint and the second viewpoint are opposed to each other across the center of the polygon,
• the first texture image corresponds to a first reconstructed portion of the polygon,
• the second texture image corresponds to a second reconstructed portion of the polygon, and
• each of the first reconstructed portion of the polygon and the second reconstructed portion of the polygon is greater than one-half of the polygon;
• and
• generating a first depth image and a second depth image,
• wherein the first depth image corresponds to the first texture image and the second depth image corresponds to the second texture image.

An image processing apparatus, comprising:

• a central processing unit (CPU) configured to:
• generate each of a first texture image of a first viewpoint and a second texture image of a second viewpoint, wherein
• the generation of the first texture image is based on projection of a first rear face of a polygon to a first projection face with respect to the first viewpoint,
• the generation of the second texture image is based on projection of a second rear face of the polygon to a second projection face with respect to the second viewpoint,
• the first projection face is perpendicular to a first sight line direction,
• the second projection face is perpendicular to a second sight line direction,
• the first sight line direction is from the first viewpoint to a center of the polygon,
• the second sight line direction is from the second viewpoint to the center of the polygon, and
• the first viewpoint and the second viewpoint are opposed to each other across the center of the polygon;
• generate a first depth image and a second depth image,
• wherein the first depth image corresponds to the first texture image and the second depth image corresponds to the second texture image;
• determine a plurality of candidate pairs of positions of the first viewpoint and the second viewpoint based on successive rotation of a straight line by a specific amount in at least one direction around the center of the polygon, wherein
• the straight line interconnects the first viewpoint and the second viewpoint, and
• the straight line passes through the center of the polygon;
• generate a plurality of pieces of viewpoint information indicating the plurality of candidate pairs of positions of the first viewpoint and the second viewpoint;
• generate, for each of the plurality of candidate pairs of positions of the first viewpoint and the second viewpoint, texture images of the first viewpoint and the second viewpoint;
• set the texture images corresponding to a specific candidate pair of positions of the plurality of candidate pairs of positions of the first viewpoint and the second viewpoint, as final texture images of the first viewpoint and the second viewpoint,
• wherein the set texture images, corresponding to the specific candidate pair of positions of the first viewpoint and the second viewpoint, has a largest region of a specific rear face of the polygon among the texture images corresponding to the plurality of candidate pairs of positions of the first viewpoint and the second viewpoint;
• and
• generate depth images individually corresponding to the final texture images of the first viewpoint and the second viewpoint.