A Novel Color Encoded Structured Light Means for Single-Shot 3D Reconstruction

Color encoded structured light is an important means for single-shot 3D reconstruction. In this paper, we present a novel pattern design and decoding algorithm. To realize a 2x2 unique window property, the pattern is constructed only with 4 different colors and their geometrical embedded versions. By encoding both color and geometrical features, a high density coding scheme with small widow size can be obtained. To localize the encoded grid-points, a twofold symmetrybased feature detector is proposed. And a topological structure is used to depict different coding points effectively. The pattern features are decoded via color and shape decoding respectively. Experiments with some real targets are implemented to demonstrate its feasibility.