| 摘要 |
A system for imaging a moving three dimensional (3D) object 1 comprises: at least three light sources 3, 5, 7, irradiating the object 1 from three different angles and each emitting radiation at a different frequency (wavelength); a video camera 9 to collect radiation from the three radiation sources, as reflected from the object; and an image processor to distinguish between the reflected signal from the three different radiation sources and generate a depth map of the 3D object. A corresponding depth imaging method is also independently claimed. Stored calibration data from a sample with a same surface characteristic as the imaged object may be used to determine orientation - specifically, surface normals - of the object; a calibration board (21, Figure 2) may be used to provide such data. The processor can determine shadow positions arising from object movement. The system is particularly directed to imaging non rigid materials such as cloth, and generating animation data. |
