室内众包的力量：众包室内3D地图

The Power of Indoor Crowd: Indoor 3D Maps from the Crowd

        近年来，随着基于智能手机的标记技术的发展，目前智能手机上都配有高分辨率的相机和多种微电子传感器，这使得人们开发一些新的移动应用成为可能。在本文中，作者解决了从众包图片中重建室内大规模3D模型的关键问题。作者设计实现了一套IndoorCrowd系统，即支持重建大规模室内3D场景的智能手机增强众包系统。IndoorCrowd填补了当前基于云的3D重建系统的空白，它能够在移动端捕获到满足室内大规模3D重建需求的高质量图片，同时在云服务端部署了自动基于图片的3D重建管道，能够从图片和传感器数据中生成3D模型。此外，作者还提供了一种直观的在线注释工具能够方便的对图片进行标记处理。这些标记信息与传感器信息相结合能够很大程度上减少IndoorCrowd的处理时间。

     Abstract—Remarkable progress was made with smartphones in the last few years. Modern smartphones are now equipped with high-resolution cameras and various micro-electrical sensors that open up new mobile application possibilities. In this work, The authors address a critical task of reconstruct indoor large-scale 3D model from crowd-sourced images. They propose, design, and implement IndoorCrowd, a smartphone empowered crowdsourcing system for large-scale indoor 3D scene reconstruction. IndoorCrowd fills a gap in current cloud-based 3D reconstruction systems as it ensures at mobile side that the captured image set fulfills desired quality for indoor large-scene 3D reconstruction. At the cloud side, they deploy an automated image-based 3D reconstruction pipeline, which generates 3D models from images and sensor data. Moreover, they provide an intuitive online annotation tool that allows easy image labeling. They present that these labeling information combined with sensor data helps IndoorCrowd reduce the total processing time greatly.

     Keywords—Indoor 3D map, crowdsourcing, 3D reconstruction  

Initial Data Acquisition using Smartphone App

3D Reconstruction Pipeline on the cloud  

Chen S, Li M, Ren K. The power of indoor crowd: Indoor 3D maps from the crowd[C]// Computer Communications Workshops (INFOCOM WKSHPS), 2014 IEEE Conference onIEEE, 2014:217-218.