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13 September 2002 Principle of color-encoded technique for 3D measurement and system design
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A color-encoded technique for 3D measurement is presented in this paper. In this technique, a color pattern that is composed of RGB components is created by software on a computer screen and projected to an object by a digital light processing, which is controlled by the computer. The image of the object is captured by a CCD color digital camera positioned at an angle different from that of the digital projection system. The color of each pixel of the image has a one-to-one correspondence with the projection angle. The 3D depth map of the object is obtained by way of computer decoding and calculating of the color image captured. The 3D measuring system and its parameters are designed based on the principle of color-encoded technology.
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Huijuan Yuan, Xiaoyang Yu, Fenlan Li, and Jianyin Guo "Principle of color-encoded technique for 3D measurement and system design", Proc. SPIE 4922, Color Science and Imaging Technologies, (13 September 2002);

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