4 results about "Structure light" patented technology

The embodiment of the invention discloses a welding line positioning method for positioning the butt joint position between welding workpieces. The welding line positioning method comprises the stepsthat an industrial camera receives structured light reflected through laser beam irradiation at the butt joint position, and an image is formed; the image is processed, and a structured light stripe framework composed of single pixels is obtained; according to the structured light stripe framework, feature points of the butt joint position area are extracted from the image, and coordinates of thebutt joint position in the image are obtained; and deflection amount calculation is conducted on the butt joint position coordinates in the image, and the actual coordinates of the butt joint positionare obtained. Through the above manner and the implementing manner, the problem that in the prior art, positioning of the butt joint position of the middle of a folded welding workpiece is inaccurateis solved; and through the positioning method, the positioning precision is improved, the later welding operation is facilitated, and the welding quality is improved.

An LED lensing arrangement for lighting fixtures includes (1) a rigid light-transmissive outer structure having an outwardly-facing light-exit surface and an outer-structure light-input surface, (2) an optically-clear molded polymeric inner structure having a light-entrance surface and a light-output surface which is adhered to the outer-structure light-input surface, the inner structure being of a material which is pourable upon molding, one example being a liquid silicone rubber (LSR) material, and (3) at least one LED light source secured with respect to and optically coupled to the inner-structure light-entrance surface.

The invention provides a measurement method and device for planar image analysis based on structural illumination features, and the method comprises the following steps: projecting stripes to the surface of a to-be-measured object, and obtaining an EPI picture of the to-be-measured object; performing feature extraction on the EPI picture to obtain line segments with obvious linear features; identifying collinear line segments belonging to the same feature point from the line segments with obvious linear features; and determining the coordinates of the three-dimensional scene of the feature point according to the collinear line segment and the relationship among the polar plane position, the straight line slope and the intercept in the EPI image. According to the invention, stripe analysisis carried out on stripe structured light projected to the surface of an object, noise is removed by using filtering and mathematical analysis methods, and an EPI reconstruction result based on structured illumination is optimized, so that the accuracy of a three-dimensional measurement result is improved, and the precision, stability and efficiency are improved to a certain extent.