An improved $$\ell _1$$ ℓ 1 median model for extracting 3D human body curve-skeleton

Three-dimensional human body curve-skeleton is widely used in pose estimation, skeleton animation and other fields. This paper proposes an improved $$\ell _1$$ median model that can extract three-dimensional human body curve-skeleton. The model includes three-dimensional human body reconstruction from multi-view images, interpolation curve-skeleton extraction, $$\ell _1$$ median skeleton completion, and continuous frame curve-skeleton optimization. Through the completion and optimization processes, the curve-skeleton we extract is smoother and more complete compared with previous methods. We conduct experiments on multi-view human body image dataset collected from light field acquisition system. Both quantitative and qualitative results demonstrate the effectiveness of our model.