How to control the depth camera
A technology of depth camera and control method, which is applied in image analysis, image enhancement, instruments, etc., can solve the problems of insufficient number of edge pixels, inability to effectively distinguish the distance between the scene and the depth camera, etc., achieve high power consumption, maintain depth discrimination, Avoid the effect of power consumption
Active Publication Date: 2018-02-13
LITE ON ELECTRONICS (GUANGZHOU) LTD +1
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Since the stereo vision depth camera does not need to emit infrared light, the power consumption is lower than that of the structured light depth camera. However, when a large flat scene appears in the field of view, the number of edge pixels obtained based on the color image is insufficient, resulting in the inability to effectively distinguish The distance between the scene and the depth camera
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[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0014] refer to figure 1 and Figure 2A , 2B , is an embodiment of the depth camera control method of the present invention. The depth camera includes a light source 1, a first image sensing unit 2, a second image sensing unit 3 spaced apart from the first image sensing unit and having an overlapping field of view, a memory 5, and an electrical connection to the light source 1. The processor 4 of the first image sensing unit 2 , the second image sensing unit 3 and the memory 5 .
[0015] The first image sensing unit 2 is capable of sensing light in a first wavelength range. The second image sensing unit 3 is capable of sensing the light in the first wavelength range and the light in a second wavelength range, and the second wavelength range is different from the first wavelength range. The wavelength of the light emitted by the light source 1 is ...
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A control method of a depth camera includes controlling first and second image sensors to detect light in a first wavelength range, generating a first depth map based on first and second images, subjecting one of the first and second images to edge-detection processing, controlling a light source to emit light in a second wavelength range when a number of edge pixels is determined to be smaller than a preset pixel number, controlling the second image sensor to detect light in the second wavelength range, generating a second depth map based on a third image, subjecting the first and the second depth maps to image fusion processing, and registering a fused depth map with one of the first and second images to generate 3D point cloud data.
Description
technical field [0001] The invention relates to a control method of a depth camera, in particular to a control method of a depth camera capable of generating three-dimensional point cloud data. Background technique [0002] An existing depth camera is a structured light depth camera, which uses an infrared light source to emit infrared light with a specific pattern, and uses an infrared light sensor to sense the infrared light reflected from the field of view back to the camera to generate an infrared light image, and a depth map can be obtained by analyzing the infrared image. The advantage of the structured light depth camera is the high accuracy of the depth map. However, when the object in the field of view of the structured light depth camera is far away, the operating power of the infrared light source needs to be increased so that the emitted infrared light can be reflected from the field of view. Back to the structured light depth camera, so it has the disadvantage ...
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IPC IPC(8): H04N13/204H04N13/296
CPCG01B11/2513G06T7/521G06T7/55G06T2207/10024G06T2207/10048G06T2207/20221H04N13/239H04N13/271
Inventor 陈昭宇
Owner LITE ON ELECTRONICS (GUANGZHOU) LTD