A high dynamic range structured light means for the 3D measurement of specular surface
| Autor: | Suming Tang, Zhan Song, Haibo Lin, Hualie Jiang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Dynamic range
Computer science business.industry Mechanical Engineering 020208 electrical & electronic engineering 3D reconstruction 02 engineering and technology Stamping 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Optics 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Radiance Specular highlight Specular reflection Electrical and Electronic Engineering business High dynamic range Structured light |
| Zdroj: | Optics and Lasers in Engineering. 95:8-16 |
| ISSN: | 0143-8166 |
| DOI: | 10.1016/j.optlaseng.2017.03.008 |
| Popis: | This paper presents a novel structured light approach for the 3D reconstruction of specular surface. The binary shifting strip is adopted as structured light pattern instead of conventional sinusoidal pattern. Based on the framework of conventional High Dynamic Range (HDR) imaging technique, an efficient means is first introduced to estimate the camera response function. And then, dynamic range of the generated radiance map is compressed in the gradient domain by introducing an attenuation function. Subject to the change of lighting conditions caused by projecting different structured light patterns, the structure light image with middle exposure level is selected as the reference image and used for the slight adjustment of the primary fused image. Finally, the regenerated structured light images with well exposing condition are used for 3D reconstruction of the specular surface. To evaluate performance of the method, some stainless stamping parts with strong reflectivity are used for the experiments. And the results showed that, different specular targets with various shapes can be precisely reconstructed by the proposed method. |
| Databáze: | OpenAIRE |
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