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Adaptive illumination based on projector-camera system for mult i reflective three-dimensional scene

机译：基于投影仪 - 相机系统的自适应照明，用于多升力三​​维场景

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摘要

We introduce a technique for illumination optimization based on a projector-camera system applied to a multireflective three-dimensional (3-D) scene. Simple mapping would fail if the scene is nonplane since they would translate to incoherent mapping between the projector and the camera. The correspondence between the pixels on the projector and camera in multireflective 3-D scene was indirectly established by surface orientation measurement. Once the correspondence was established, the local light was adapted by using the iteration in order to obtain the optimal illumination intensities at different surface orientations. User intervention forjudging the desirable image is required in the iteration stage since there is no absolute reference for comparison to which the object must appear. According to the feedback from the camera, the projector is to compensate for surface reflectance for the most part by modulating the projection brightness at each pixel to be inversely proportional to the brightness of the pixel under uniform light. The time required for this adaptive illumination can be shortened to the inspection stage of 40 ms as long as the inspected object does not change in orientation or location. This proposed technique aims to enhance the illumination capabilities and presents a more unified system than existing methods.
机译：我们介绍了一种基于应用于多边形三维（3-D）场景的投影仪相机系统的照明优化技术。如果场景是非平面，则简单的映射将失败，因为它们会转化为投影仪和相机之间的不连贯映射。通过表面方向测量间接建立在MultiFreflective 3-D场景中的投影仪和摄像机上的像素之间的对应关系。一旦建立了对应，通过使用迭代来调整局部光以获得不同表面取向的最佳照明强度。在迭代阶段中需要用户干预讲解所需的图像，因为没有绝对参考，以便与对象必须出现的比较。根据摄像机的反馈，投影仪通过调制每个像素的投影亮度来补偿大多数情况的表面反射率，以与均匀光下的像素的亮度成反比。只要被检查的物体在取向或位置不变化，该自适应照明所需的时间可以缩短到40ms的检查阶段。该提出的技术旨在增强照明能力，并提出比现有方法更统一的系统。

著录项

  • 来源
    《Optical engineering》 |2017年第2期|025104.1-025104.7|共7页
  • 作者

    Chengang Lyu; Shuang Gao; Jiachen Yang;

  • 作者单位

    Tianjin University School of Electrical and Information Engineering Tianjin China;

    Tianjin University School of Electrical and Information Engineering Tianjin China;

    Tianjin University School of Electrical and Information Engineering Tianjin China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    adaptive illumination; machine vision; correspondence; iteration;

    机译：自适应照明;机器视觉;一致;迭代;

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