2012

Poznan University of Technology Academic Journals. Electrical Engineering

Journal year: 2012 | Journal number: Issue 71

scientific article

english

EN Image Based Rendering (IBR) is one of the most efficient approaches to the real-time computer visualisation. Applying the warping equation, being the essence of this method, it is possible to render the image observed by a virtual camera assuming the knowledge of the image and the depth map taken by another camera or cameras located at different positions. Nevertheless, depending on the geometrical configuration of the reference and destination (virtual) cameras some holes in the destination image can be observed. Their presence is caused by the fact that some fragments of objects visible from the destination camera may be not present in the reference images. A typical approach to filling such holes is splatting but typical algorithms usually cause the loss of details. Nevertheless, using the sub-pixel IBR based on the combination of the images taken from two or more cameras, the problem of missing data can be partially solved due to the possibility of the 2D or 3D interpolation, considering also the depth values of the projected points in the second case. The results obtained using the proposed approach have been verified using some recently proposed full-reference image quality assessment methods using the synthetic image of the 3D object as the reference image.

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