To overcome the difficulty of reconstruction for small object, the paper addresses a series of improved methods. The
reconstruction mainly includes: orientation, measurement and modeling. The multi-view matching based on refining TIN
can combine the process of automatic measuring and modeling. Based on coarse-to-fine tragedy, it can increase
effectively precision and efficiency. The experiment results demonstrate that these approaches are effective and
applicable to reconstruction of small archeology with sufficient texture features.
KEYWORDS: 3D modeling, Visual process modeling, Tin, 3D metrology, Image processing, Cameras, Photogrammetry, Calibration, 3D vision, Mathematical modeling
It is difficult for traditional photogrammetry techniques to reconstruct 3D model of close-range objects. To overcome the
restriction and realize complex objects' 3D reconstruction, we present a realistic approach on the basis of multi-baseline
stereo vision. This incorporates the image matching based on short-baseline-multi-views, and 3D measurement based on
multi-ray intersection, and the 3D reconstruction of the object's based on TIN or parametric geometric model. Different
complex object are reconstructed by this way. The results demonstrate the feasibility and effectivity of the method.
In this paper, a automatic approach of geometry precision checking for digital ortho-image (DOM), especially for a batch of DOM, is proposed. Automatic image matching between DOM with various resolution was performed in the DOM checking based on reference DOM with higher resolution. Automatic extraction of linear feature was used in the DOM checking based on reference vector map with higher precision. A lot of experiments testify that the method of this paper
can improve the efficency and reliability of checking method of DOM image for geometry precision.
KEYWORDS: 3D modeling, Model-based design, Data modeling, Solid modeling, Visual process modeling, Systems modeling, 3D image reconstruction, 3D image processing, Cameras, Process modeling
Techniques of converting 2D plans or survey data to CAD models (model-based modeling) are very labor intensive, and methods for rendering such models are generally not photo-realistic. The photogrammetric modeling technique (image-based modeling) is an interactive tool that allows the user to build a geometric model of an object based on a set of photographs. This paper adopts an approach of combination of model-based modeling and image-based modeling, make the modeling process more effective and accurate.
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