Multi-view acquisition device for acquiring product shapes by using liquid surface and acquisition method

Abstract

The invention relates to a multi-view acquisition device for acquiring product shapes by using a liquid surface and an acquisition method. The multi-view acquisition device comprises a base and a container arranged above the base, wherein a liquid storage tank for storing liquid is placed in the base, a water pump is arranged in the liquid storage tank, the water pump is connected with the container above the base through a pipeline, an object to be scanned is placed on the bottom plane of the container which is provided with a plurality of calibration columns, the upper side of the base is fixedly connected with an upright column which is provided with a control device and a motion driving mechanism, the motion driving mechanism comprises a step motor, a ball screw and a nut, the motor is fixed on the upright column, the ball screw is connected with an output shaft of the motor, the nut and the ball screw form a screw driving pair, the nut is fixedly connected with a longitudinal and transverse beam which is connected with a mounting rack for mounting an image acquisition device, and the longitudinal and transverse beam is provided with a liquid level sensor for ensuring that the liquid level is kept unchanged at each acquisition. The multi-view acquisition device solves occlusion phenomena of image acquisition through a plurality of lenses and is provided with a plurality of rounds or other references for splicing images, thereby greatly improving the practicability and the acquisition efficiency. The multi-view acquisition device can conveniently acquire information on the geometric outline at whole or certain height of a product, and the acquisition method has simple and convenient operation, high efficiency and wide application range.

Description

technical field [0001] The invention relates to a multi-view acquisition device and a collection method for obtaining product shapes by using a liquid surface, and belongs to the innovative technology of a multi-view collection device and a collection method for obtaining product shapes by using a liquid surface. Background technique [0002] At present, a method of using liquid to obtain the geometric shape of the product that involves reverse engineering is to inject a low-transmittance liquid into the container where the product to be tested is placed, change the height of the liquid level in the container, and use an optical measuring device to obtain it layer by layer. The information of the geometric contour line of each or a certain height of the product to be tested is currently known as a single lens. Due to the characteristics of the optical lens and the shape of the product, even the outer surface of the product is more or less blocked, so that The collected data ...

AI Technical Summary

Problems solved by technology

[0002] At present, a method of using liquid to obtain the geometric shape of the product that involves reverse engineering is to inject a low-transmittance liquid into the container where the product to be tested is placed, change the height of the liquid level in the container, and use an optical measuring device to obtain it layer by layer. The information of the geometric contour line of each or a certain height of the product to be tested is currently known as a single lens. Due to the characteristics of the optical lens and the shape of the product, even the outer surface of the product is more or less blocked, so that The collected data is incomplete, the product needs to be clamped multiple times, the operation is cumbersome, and the efficiency is low, which limits its application range

Images