Color-coding-based multi-view dimensional stereoscopic-vision foot type three-dimensional measuring method and system and medium

Abstract

The invention discloses a color-coding-based multi-view dimensional stereoscopic-vision foot type three-dimensional measuring method and system and a medium. The method comprises: with a multi-view image collection platform, multi-camera synchronous shooting of a foot type with a color coding pattern sock is carried out and image acquisition is carried out; according to the collected image, internal and external parameters of the cameras are obtained based on a spherical multi-camera calibration algorithm; on the basis of internal and external parameters of the cameras, foot type dense featurepoint matching is carried out; and model construction and foot type parameter measurement are carried out based on the internal and external parameters of the cameras and the foot type dense featurepoint matching result. The color-coding-based multi-view dimensional stereoscopic-vision foot type three-dimensional measuring method and system have advantages of low cost, great easiness in featurepoint identification and matching, high generated point cloud density, and fast computing speed and the like. And the foot model and related size parameters are accurately and completely obtained.

Description

technical field [0001] The invention relates to the technical field of foot shape measurement, in particular to a color coding-based multi-eye stereo vision three-dimensional foot shape measurement method, system and medium. Background technique [0002] At present, the non-contact technologies commonly used in 3D foot measurement include methods based on laser scanning reconstruction, methods based on structured light reconstruction and methods based on stereo vision reconstruction. Most of the foot shape three-dimensional measurement systems on the market are based on the method of laser scanning and reconstruction. Line lasers are used to form a closed plane to scan the feet. At the same time, the camera is used for imaging to obtain the surface information of the foot shape on the section of the light belt, and then through the motor along the vertical direction. Exercise to get the 3D model of the foot shape. The measurement method based on structured light reconstruct...

AI Technical Summary

Problems solved by technology

However, the reliability of the measured parameters is lower compared with the method of directly reconstructing the model

The reconstruction method based on scattered spots is sparse in feature points, so the reconstructed model is also sparse.

At the same time, the measurement methods based on stereo vision reconstruction all require accurate camera parameters, and when the checkerboard calibration method is applied to multiple cameras with a wide distribution, the camera parameters are easy to introduce large cumulative errors in the process of relationship transfer

Images