Abstract:

A new depth estimation algorithm based on graph cuts is proposed to improve the accuracy of depth maps. Average luminancegradient matching method is proposed to replace unitary pixel luminance matching. The graph structure is changed considering depth correlations between each adjacent pixel. The depth of the colocated pixel in previous frame is used to restrict the depth of current pixel. Taking consideration of the spatial and temporal features of depth maps, the accuracy of estimated depth maps is then improved. Experimentss demonstrate that the proposed method can generate more accurate depth maps than the traditional graph cuts in algorithms.

Key words: depth estimation, graph cuts, spatial accuracy, temporal consistency