Structured Light Scanner Principle

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Structured light scanner principle.

The projected images have. Used for both dimensional inspection and reverse engineering structured light scanning employs projected light and cameras to measure the three dimensional surfaces of an object. The light is generated with the use of various types of projectors such as the dlp technology digital light processing. The measurement principle of structured light scanners is based on detecting the deformation of a pattern of light projected onto the surface of an object.

Projecting a narrow band of light onto a three dimensionally shaped surface produces a line of illumination that appears distorted from other perspectives than that of the. A projector pro jects a certain number of images on the object of interest. The principle of structured light scanning. Technique for 3d scanner camera projector calibration.

The same technique used for thom s face in the radiohead house of cards video. 2 3 3d reconstruction using structured light the basic principle of sl approach can be summarized as follows. The structured light used generally are of colors white or blue. The most basic principle behind structured light 3d scanning is triangulation.

How structured light scanning works. This video explains the basic concept of how a structured light 3d scanner work using the hdi advance r3x 3d scanner. I ll walk you through setting up your projector and camera and capturing images that can be decoded into a 3d point cloud using a processing application. The projected light ray is generally either in a series pattern or it could be a random dot matrix too.

Structured light 3d scanning. A structured light 3d scanner is a 3d scanning device for measuring the three dimensional shape of an object using projected light patterns and a camera system. A camera placed slightly offset from the projector records the shape of the line at an angle figure 1 and the distance to. This basic trigonometric principle has been the foundation of all 3d scanning technologies that are dependent on a stationary source of light.

Light stripe scanning single stripe camera source surface light plane optical triangulation project a single stripe of laser light scan it across the surface of the object this is a very precise version of structured light scanning good for high resolution 3d but needs many images and takes time courtesy s. One of the most common types of non contact 3d scanning is structured light scanning. Advantages of structured light 3d scanning technology. The projector and camera are accurately calibrated so that 3d locations can be recovered by triangulation.

The object is illuminated with a plane of light that intersects the surface of the object as a deformed stripe which is observed by an offset camera.