Depth Interpolation Using Tangent Planes on Superpixels of a Color Image
Kiyoshi Matsuo, Yoshimitsu Aoki · Electronics and Communications in Japan · 2015
SUMMARY This paper describes a method for accurately interpolating a low‐resolution depth image using a high‐resolution color image. In our method, first, tangent planes on each superpixel are estimated from sparse depth information and dense color information. Then, the neighboring superpixels that have smooth‐connectable tangent planes are connected, and image segmentation to smooth surfaces is achieved. Finally, the low‐resolution depth image is interpolated by using this smooth surface segmentation. In experiments with images from the Middlebury stereo data sets, our method interpolates each image at a high rate, and achieves the lowest error when compared to existing techniques.