Three-dimensional point cloud information acquisition method and device, and electronic equipment

Abstract

The invention provides a three-dimensional point cloud information acquisition method and device, and electronic equipment, and belongs to the technical field of three-dimensional modeling. The three-dimensional point cloud information acquisition method comprises the steps: acquiring images of the surface of a target object through N cameras respectively, wherein the images comprise structured light patterns of the surface of the target object, at least two cameras with different lens apertures exist in the N cameras, and N is an integer larger than 1; and determining three-dimensional pointcloud information of the surface of the target object according to each image. More accurate three-dimensional point cloud information acquisition can be performed on a target object with large reflectivity difference in different areas of the surface.

Description

technical field [0001] The present invention relates to the technical field of three-dimensional modeling, in particular to a method, device and electronic equipment for collecting three-dimensional point cloud information. Background technique [0002] The three-dimensional shape information of the target to be measured can be accurately obtained by using the three-dimensional measurement technology based on structured light. Three-dimensional measurement based on structured light usually uses structured light modules and cameras. Let the structured light module project a preset structured light pattern to the surface of the target object, and then use the camera to capture the projected image of the above pattern on the surface of the target object. Using these photos and performing structured light calculations on them, the three-dimensional information of the surface of the target object can be obtained. [0003] However, when the reflectivity of the surface of the tar...

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Problems solved by technology

[0003] However, when the reflectivity of the surface of the target object varies in a large range, that is, there are high reflection areas (such as metals, ceramics, etc.) and low reflection areas (such as black matte objects) on the surface of the target object, due to the The brightness of the light or the exposure time of the camera is fixed, and the image captured by the camera on the surface of the target object with structured light will be overexposed (high reflection area) or underexposed (low reflection area) in some areas, resulting in The image of the surface of the target object collected by the camera cannot be recognized to obtain the 3D point cloud information, or there are holes in some areas of the 3D point cloud information, resulting in low accuracy of the 3D point cloud information

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