1 results about "Color marker" patented technology

This invention discloses a method for measuring 3D topography and deformation based on marker point culling and extraction, belonging to the field of computer vision 3D measurement and computing. The method includes: creating colored marker points on the surface of the object being measured; projecting a grayscale structured light pattern onto the surface of the object; acquiring the structured light pattern modulated on the surface of the object to obtain a texture pattern; extracting the red, green, and blue (RGB) intensity values ​​of the background and the colored marker points from the texture pattern; calculating the culling coefficient and extraction coefficient based on the RGB intensity values ​​of the background and the colored marker points, and extracting the stripe pattern and marker point pattern respectively; reconstructing the 3D topography using the stripe pattern; associating the preceding and following 3D point clouds using the marker point pattern; and subtracting the corresponding coordinates of the 3D points to obtain 3D deformation information. This method achieves full-field 3D topography reconstruction of complex structures; ensures the accuracy of deformation tracking; and enables 3D topography and deformation measurement of complex objects.