Real-time stereo rendering of concentric mosaics with linear interpolation

Abstract

In this paper, we introduce an efficient image based rendering system for concentric mosaics, which can render stereo pair images of real scene in real time, with improved image qualities. We will mainly focus on related user interface issues and three interpolation algorithms: point sampling, linear interpolation with infinite or constant depth.

On the number of samples needed in light field rendering with constant-depth assumption

“…For example, interpolation using parallel rays assumes infinite depth. It has been shown in [10] that interpolation using constant-depth assumption yields better rendering results. Figure 1 illustrates the concept of bilinear interpolation with constant-depth assumption.…”

“…Figure 1 illustrates the concept of bilinear interpolation with constant-depth assumption. Suppose that we want to render a view at V , and the viewing ray hits the constantdepth surface at P. C 1 and C 2 are two nearby positions of the camera that are closest to V P , and C i D ij (i j = 1 2) are nearby rays in camera C i that are closest to the ray C i P. The pixel value of V P is bilinearly interpolated, e.g., according to the angles 6 D ij C i P and 6 C i P V (i j = 1 2) [10].…”