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Rate control initialization algorithm for scalable video coding

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4 Author(s)
Lulu He ; EECS Dept., Northwestern Univ., Evanston, IL, USA ; Sen Wang ; Kane, P. ; Pappas, T.N.

We present a high-accuracy shape acquisition approach that uses a combined Gray code and phase-shifting structured light projection. The Gray code pattern coarsely divides the projected plane into local regions, whereas phase-shifting precisely determines the pixel-accurate index for each point on the plane. The combination of the two codifications greatly decreases the number of patterns as compared to Gray code alone. It also retains high resolution without the required phase unwrapping step in the phase-shifting algorithm, which is time consuming. Most importantly, it works for multiple objects or discontinuous surfaces without using markers, as employed by the phase-shifting method. Experimental results with real objects and human faces indicate the effectiveness of the proposed approach.

Published in:

Image Processing (ICIP), 2011 18th IEEE International Conference on

Date of Conference:

11-14 Sept. 2011