Depth-camera based three-dimensional scene depth measurement device
A technology of depth camera and three-dimensional scene, which is applied in the field of computer vision, can solve the problem of poor measurement accuracy of depth in three-dimensional scenes, and achieve the effect of improving measurement accuracy
Active Publication Date: 2011-05-25
TSINGHUA UNIV
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[0004] The purpose of the present invention is to at least solve the technical defect of poor measurement accuracy of three-dimensional scene depth
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[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0019] Such as figure 1 Shown is a schematic structural diagram of measuring the depth of a three-dimensional scene based on a depth camera according to an embodiment of the present invention. The device includes: a first depth camera 11 , a second depth camera 12 , a synchronization control unit 13 and an optical path control unit 14 .
[0020] The synchronization control unit 13 controls the first depth camera 11 and the second depth camera 12 to simultaneously emit light to the three-dimensional scene to be measured, and simultaneousl...
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The invention provides a depth-camera based three-dimensional scene depth measurement device, comprising a first depth camera, a second depth camera, a synchronization control unit and a light-path control unit. The synchronization control unit is used for controlling the first depth camera and the second depth camera to emit light simultaneously, receiving light reflected by a measured three-dimensional scene, determining two time differences respectively according to the light emitting time and the reflected light receiving time and determining the depth of the measured three-dimensional scene according to the ratio of the two time differences; and the light-path control unit is used for transmitting the emitted light to the measured three-dimensional scene, dividing the light reflectedby the measured three-dimensional scene into two paths and transmitting the two paths of light respectively to the first depth camera and the second depth camera, wherein the path of the light emitted by each depth camera is the same as that of the reflected light. The depth of the three-dimensional scene is determined according to the time difference of the light emitted by the two depth camerasand the received light, the measurement error of the single depth camera is counterbalanced, and the three-dimensional scene depth measurement precision is improved.
Description
technical field [0001] The invention relates to the technical field of computer vision, in particular to a device for measuring the depth of a three-dimensional scene based on a depth camera. Background technique [0002] A depth camera is a device that acquires information in the depth direction of a scene. Existing depth cameras usually use the principle of radar measurement to measure the depth of the 3D scene, that is, the depth camera emits active light waves to illuminate the 3D scene, and the light waves return to the depth camera after being reflected by the 3D scene. The time difference (ie, phase difference) between times acquires depth information of a three-dimensional scene. [0003] The existing problem of using the depth camera to measure the depth information of the 3D scene is that due to the influence of factors such as the measurement accuracy and phase control of the actual instrument, the accuracy of the depth information of the 3D scene measured by the...
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Login to View More IPC IPC(8): G01S17/02G01S17/89G01S7/497G01S5/16
Inventor 戴琼海王雁刚
Owner TSINGHUA UNIV