Chromatic aberration appears for almost all lenses for imaging based on white light. The effect degrades image quality for both b/w and colour cameras. This paper discusses the possibilities of modelling chromatic aberration with self-calibrating bundle adjustment for high-precision photogrammetric 3D point measurement using all three channels of a true colour image. After a survey on common ty...

In this paper we present a new calibration approach for focused plenoptic cameras. We derive a new mathematical projection model of a focused plenoptic camera which considers lateral as well as depth distortion. Therefore, we derive a new depth distortion model directly from the theory of depth estimation in a focused plenoptic camera. In total the model consists of five intrinsic parameters, t...

We present a simple, fast and robust technique for semi-automatic 2D-3D registration capable to align a large set of unordered images to a massive point cloud with minimal human effort. Our method converts the hard to solve image-to-geometry registration problem in a Structure-from-Motion (SfM) plus a 3D-3D registration problem. We exploit a SfM framework that, starting just from the unordered ...

One main challenge in Augmented Reality (AR) applications is to keep track of video objects with their movement, orientation, size, and position accurately. This poses a challenging task to recover nonrigid shape and global pose in real-time AR applications. This paper proposes a novel two-stage scheme for online non-rigid shape recovery toward AR applications using Active Appearance Models (AA...

We present a calibration method for multi-view cameras which provides a rigorous maximum-likelihood estimation of the mutual orientation of the cameras within a rigid multi-camera system. No calibration targets are needed just a movement of the multi-camera system taking synchronized images of a high textured and static scene. Multi-camera systems with non-overlapping views have to be rotated w...

We attack the problem of coordinate frame dependence and gauge freedoms in structure-from-motion. We are able to formulate a bundle adjustment algorithm whose results are independent of both the coordinate frame chosen to represent the scene and the ordering of the images. This method is more efficient that existing approaches to the problem in photogrammetry. We demonstrate that to achieve coo...

We present a new structure from motion (Sfm) technique based on point and vanishing point (VP) matches in images. First, all global camera rotations are computed from VP matches as well as relative rotation estimates obtained from pairwise image matches. A new multi-staged linear technique is then used to estimate all camera translations and 3D points simultaneously. The proposed method involve...

In order to acquire quick, high resolution, affordable aerial photographs, an unmanned helium filled airship system equipped with a non-metric digital camera was developed in Chinese Academy of Surveying and Mapping. To meet the potential demand of large scale photogrammetric applications, the non-metric digital camera was calibrated rigourously based on the bundle adjustment with additional pa...

This paper presents a comprehensive analysis of the topographic mapping capabilities of images from the Mars Exploration Rover 2003 (MER) mission. The 3D measurement accuracies of Pancam (panoramic camera) and Navcam (navigation camera) stereo pairs are estimated using basic photogrammetric principles. The mapping capabilities of single-site panoramas, multi-site panoramas, and wide-baseline st...

Common techniques in structure from motion do not explicitly handle foreground occlusions and disocclusions, leading to several trajectories of a single 3D point. Hence, different discontinued trajectories induce a set of (more inaccurate) 3D points instead of a single 3D point, so that it is highly desirable to enforce long continuous trajectories which automatically bridge occlusions after a ...