Reconstruction of Sewer Shaft Profiles from Fisheye-Lens Camera Images
نویسندگان
چکیده
In this paper we propose a robust image and sensor based approach for automatic 3d model acquisition of sewer shafts from survey videos captured by a downward-looking fisheye-lens camera while lowering it into the shaft. Our approach is based on Structure from Motion adjusted to the constrained motion and scene, and involves shape recognition in order to obtain the geometry of the scene appropriately. The approach has been implemented and applied successfully to the practical stage as part of a commercial software.
منابع مشابه
3D Reconstruction of Sewer Shafts from Video
In this paper we propose a robust approach for automatic 3d model acquisition of sewer shafts from survey videos. Images are captured by a specific camera setup which is composed of a downward-looking fisheye-lens camera while lowering it into the shaft. Additionally, an inertial sensor measures rotation around the viewing axis. Our approach is based on Structure from Motion adjusted to the con...
متن کاملTime budget evaluation for image-based reconstruction of sewer shafts
In this paper we propose a robust real-time image and sensor based approach for automatic 3d model acquisition of sewer shafts from survey videos captured by a downward-looking fisheye-lens camera while lowering it into the shaft. Our approach is based on Structure from Motion adjusted to the constrained motion and scene, and involves shape recognition techniques in order to obtain the geometry...
متن کاملGeometric Modelling and Calibration of Fisheye Lens Camera Systems
The paper describes a geometric projection model for fisheye lenses and presents results of the calibration of fisheye lens camera systems based on it. For fisheye images the real projection model does not comply with the central perspective. In addition, the lenses are subject to considerable distortions. The fisheye lens projection follows an approximately linear relation between the incidenc...
متن کاملLens Model Selection for Visual Tracking
A standard approach to generate a camera pose from images of a single moving camera is Structure From Motion (SfM). When aiming on a practical implementation of SfM often a camera is needed that is lightweight and small. This work analyses which is the best camera and lens for SfM, that is small in size and available on the market. Therefore we compare cameras with fisheye and perspective lense...
متن کاملIntegrated Processing of Terrestrial Laser Scanner Data and Fisheye-camera Image Data
The paper presents the integration of a geometric model of fisheye lenses and a geometric terrestrial laser scanner model in a bundle block adjustment. The model allows for a full integration of hemi-spherical fisheye imagery into terrestrial laserscanner data processing schemes. Both the laserscanner and fisheye geometric model are extended by additional parameters to compensate for deviations...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2009