Abstract: An image rendering device realizes stereoscopic viewing of composite images generated by compositing background three-dimensional models and foreground three-dimensional models each defined in three-dimensional modeling space. A texture mapping unit converts background image data into two or more viewpoint textures and maps each viewpoint texture to a background three-dimensional model in the three-dimensional modeling space. A viewport conversion unit extracts, for each of the two or more viewpoint textures, a viewport image from the background three-dimensional model mapped with the viewpoint texture and from the foreground three-dimensional model.

Abstract: A image providing device provides a user with realistic and natural past-experience simulation through stereoscopic photographs. Specifically, feature-point extractors extract feature points from a foreground image and a background image, respectively. A stereoscopic matching module searches for pairs of feature points matching between the foreground image and the background image and obtains using the feature point pairs a transformation matrix for projecting the foreground image onto the background image. The transformation by the transformation matrix obtained by the matching unit is applied to foreground depth data, which is depth data of the foreground image. Lastly, depth based rendering is performed based on the transformed foreground depth data to obtain two or more viewpoint images corresponding to the foreground image.

Abstract: An image rendering device realizes stereoscopic viewing of a joint background image. A DIBR unit 17 applies pixel shifting to each background image constructing the joint background image and also conducts boundary processing relative to the pixel shifting. The joint background image is composed of one or more background images stitched together along their edges on a three-dimensional model. The pixel shifting is to shift pixels of each background image in the row direction. The amount of shift applied to each pixel is determined based on the depth value of a corresponding pixel of a depth image. The boundary processing is to extract pixels shifted out of the display region of a given background image as a result of pixel shifting and add the extracted pixels to an edge of another background image adjacent to the given background image in the row direction.

Abstract: Ocular strain is reduced for the viewer by reducing extreme changes of depth value occurring at stereoscopic scene jumps, dimension switches from 2D to 3D video, and the like. A playback device includes a video plane and a depth value memory for storing depth values of a plurality of stereoscopic video frames. The depth value memory stores the depth values of a plurality of frames, at least including a destination frame, and of a starting frame. When a request to switch from 2D to 3D video or to switch scenes within 3D video is received, switch timing control or destination frame depth value adjustment is performed so as to reduce the occurrence of extreme depth value changes and provide smooth switching.

Abstract: An image rendering device realizes stereoscopic viewing of composite images generated by compositing background three-dimensional models and foreground three-dimensional models each defined in three-dimensional modeling space. A texture mapping unit converts background image data into two or more viewpoint textures and maps each viewpoint texture to a background three-dimensional model in the three-dimensional modeling space. A viewport conversion unit extracts, for each of the two or more viewpoint textures, a viewport image from the background three-dimensional model mapped with the viewpoint texture and from the foreground three-dimensional model.

Abstract: A image providing device provides a user with realistic and natural past-experience simulation through stereoscopic photographs. Specifically, feature-point extractors 15 and 22 extract feature points from a foreground image and a background image, respectively. A stereoscopic matching module 25 searches for pairs of feature points matching between the foreground image and the background image and obtains using the feature point pairs a transformation matrix for projecting the foreground image onto the background image. The transformation by the transformation matrix obtained by the matching unit is applied to foreground depth data, which is depth data of the foreground image. Lastly, depth based rendering is performed based on the transformed foreground depth data to obtain two or more viewpoint images corresponding to the foreground image.

Abstract: An image rendering device realizes stereoscopic viewing of a joint background image. A DIBR unit 17 applies pixel shifting to each background image constructing the joint background image and also conducts boundary processing relative to the pixel shifting. The joint background image is composed of one or more background images stitched together along their edges on a three-dimensional model. The pixel shifting is to shift pixels of each background image in the row direction. The amount of shift applied to each pixel is determined based on the depth value of a corresponding pixel of a depth image. The boundary processing is to extract pixels shifted out of the display region of a given background image as a result of pixel shifting and add the extracted pixels to an edge of another background image adjacent to the given background image in the row direction.

Abstract: An electronic publication viewer (1000) includes a display target specifying unit (1100) that specifies a display target page and the position and size of the display target region, a page structure data obtaining unit (1200) that obtains page structure data corresponding to the display target page, a rendering unit (1300) that generates the display image data corresponding to the position and size of the display target region, a display image data caching unit (1400) that caches the display image data, and a display control unit (1500) that causes the display image data obtained from the rendering unit (1300) or the display image data caching unit (1400) in a position of a display unit superimposed on the display target region.

Abstract: Ocular strain is reduced for the viewer by reducing extreme changes of depth value occurring at stereoscopic scene jumps, dimension switches from 2D to 3D video, and the like. A playback device includes a video plane and a depth value memory for storing depth values of a plurality of stereoscopic video frames. The depth value memory stores the depth values of a plurality of frames, at least including a destination frame, and of a starting frame. When a request to switch from 2D to 3D video or to switch scenes within 3D video is received, switch timing control or destination frame depth value adjustment is performed so as to reduce the occurrence of extreme depth value changes and provide smooth switching.