APPARATUS AND METHOD FOR GENERATING DEPTH IMAGE
First Claim
1. An apparatus for generating a depth image, the apparatus comprising:
- an optical modulator which optically modulates reflective light which is reflected light from an object to which light modulated using a first pseudorandom (PN) sequence is irradiated, by use of second PN-sequences, each of which has a same PN sequence as the first PN-sequence, but the second PN-sequences having N different time shifts;
an optical sensor which senses the optically modulated reflective light; and
a depth image process unit which samples N intensity images from the optically modulated reflective light sensed by the optical sensor and generates a depth image of the object using the sampled N intensity images.
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Abstract
An apparatus and method for generating a depth image are provided. The apparatus includes an optical modulator, an optical sensor, and a depth image processor. The optical modulator optically modulates light which is reflected from an object to which light modulated using a first pseudorandom (PN) sequence is irradiated. The optical modulator optically modulates the reflected light using second PN-sequences, where each of the second PN-sequences has a same PN sequence as the first PN-sequence, but the second PN-sequences have N different time shifts. The optical sensor senses the optically modulated reflective light. The depth image processor samples N intensity images from the optically modulated reflective light sensed by the optical sensor and generates a depth image of the object using the sampled N intensity images.
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Citations
23 Claims
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1. An apparatus for generating a depth image, the apparatus comprising:
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an optical modulator which optically modulates reflective light which is reflected light from an object to which light modulated using a first pseudorandom (PN) sequence is irradiated, by use of second PN-sequences, each of which has a same PN sequence as the first PN-sequence, but the second PN-sequences having N different time shifts; an optical sensor which senses the optically modulated reflective light; and a depth image process unit which samples N intensity images from the optically modulated reflective light sensed by the optical sensor and generates a depth image of the object using the sampled N intensity images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for generating a depth image, the apparatus comprising:
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an optical modulator which optically modulates reflective light which is reflected light from an object to which light modulated using N first pseudorandom (PN) sequences having, respectively, N different time shifts is irradiated, by use of a second PN-sequence which has a same PN sequence as that of the first PN-sequences but has a time shift different from those of the first PN-sequences; an optical sensor which senses the optically modulated reflective light; and a depth image process unit which samples N intensity images from light signals sensed by the optical sensor and generates a depth image of the object using the sampled N intensity images. - View Dependent Claims (18)
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19. A method of generating a depth image, the method comprising:
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performing optical modulation on reflective light which is reflected light from an object to which light modulated using a first pseudorandom (PN) sequence is irradiated, by use of a second PN-sequence which has a same PN sequence as a first PN-sequence but the second PN-sequence has N different time shifts; sensing the optically modulated reflective light; sampling N intensity images obtained from the sensed optically modulated reflective light; and generating a depth image of the object using the N sampled intensity images. - View Dependent Claims (20)
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21. A method of generating a depth image, the method comprising:
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irradiating light modulated using a first pseudorandom (PN) sequence toward an object; optically modulating, using a plurality of second PN-sequences, light that is reflected off of the object, the second PN-sequences having a same PN-sequence as the first PN sequence; sensing the optically modulated light; sampling N intensity images from the sensed optically modulated light; and generating a depth image of the object using the N sampled intensity images, wherein the second PN-sequences have N different time shifts. - View Dependent Claims (22, 23)
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Specification