Structured Highlight Inspection of Specular Surfaces
IEEE Transactions on Pattern Analysis and Machine Intelligence
The information available to a moving observer from specularities
Image and Vision Computing - 4th Alvey Vision Meeting
IEEE Computer Graphics and Applications
Retrieving Shape Information from Multiple Images of a Specular Surface
IEEE Transactions on Pattern Analysis and Machine Intelligence
A Coded Light Approach for Depth Map Acquisition
Mustererkennung 1986, 8. DAGM-Symposium
Morphological Image Analysis: Principles and Applications
Morphological Image Analysis: Principles and Applications
Voxel Carving for Specular Surfaces
ICCV '03 Proceedings of the Ninth IEEE International Conference on Computer Vision - Volume 2
ICCV '03 Proceedings of the Ninth IEEE International Conference on Computer Vision - Volume 2
A Variational Analysis of Shape from Specularities using Sparse Data
3DPVT '04 Proceedings of the 3D Data Processing, Visualization, and Transmission, 2nd International Symposium
PDE based shape from specularities
Scale Space'03 Proceedings of the 4th international conference on Scale space methods in computer vision
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Structured light techniques with binary coding are practical to inspect the specular surfaces. The structured light approaches use a scanned array of point sources and images of the resulting reflected highlights to compute local surface orientation. Binary coding scheme is the classic scheme for efficiently coding the light sources. This paper proposes a novel quaternary coding scheme which is much more efficient than the classic binary coding scheme. In this scheme, polychromatic light sources are utilized and coded in quaternary scheme. Our experimental system is described in detail. The problem caused by the polychromatic light sources is discussed too. To solve the problem, we drew lesson from the erosion operator from the Mathematical Morphology and designed an effective algorithm. The experiment results show the new quaternary coding scheme not only keeps a very high accuracy, but also greatly improves the efficiency of the inspection of specular surface.