Optical Watermarking Technique Applied to Moving Objects
نویسندگان
چکیده
We propose the application of optical watermarking to real moving objects like the faces of people who are walking. Optical watermarking technology uses spatially modulated light containing invisible watermarked data that irradiates real objects to make photographed data contain the embedded watermarking. We performed experiments where illumination containing time-sequential data embedded with watermarking information in each frame was irradiated onto the model of a human face with motion, and the watermarking information was extracted from moving image data captured with a video camera. A technique was used to correct geometrical distortion in the image of the watermarked area that occurred on the curved surface of a 3D object. As a result, we found that the embedded time-sequential watermarking information was extracted from the moving image data with a sufficient degree of accuracy.
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