Non-contact object size and distance image measuring instrument

Abstract

The invention discloses a non-contact object size and distance image measuring instrument, which comprises modules including a zoom lens, a CCD (charge coupled device) image sensor, a laser light source, a DSP (digital signal processing) image processing board card, a miniature touch displayer, a power supply module, an instrument panel, a portable instrument case and the like. The measuring instrument firstly obtains images of objects to be measured, then, the images to be processed are subjected to denoising enhancing and interpolation super-resolution processing, and then, light spot detection and pixel calibration are carried out; after a user selects measuring objects, a system segments the measuring objects, and then, the size of the objects and the distance between the objects are calculated; the instrument can simultaneously measure the distance between any two points; a measuring result is finally sent to a display to be displayed in a marked way. The measuring instrument has the advantages that the configuration of the laser light source is flexible, the pixel calibration is simple, the calculation on the sizes and the distance of the objects is accurate, the manufacturing difficulty is low, the portability is realized, the measurement is accurate, the measurement efficiency is high, and the application range is wide.

Description

technical field [0001] The invention relates to a non-contact object size image measuring instrument based on image processing technology and laser calibration and a method for measuring object size and distance by using the device, belonging to the technical field of digital image processing. Background technique [0002] The measurement of the size of objects and the distance between them has a wide range of applications in many fields such as industrial product inspection, power system maintenance, water conservancy engineering measurement, cultural relic archaeological measurement, wild animal and plant protection, etc. In the field of industrial product inspection, it is necessary to measure whether the size of parts, molds and other products meet the standards, and reject defective products that do not meet the standards; in the field of power system maintenance, it is necessary to measure wires and surrounding trees, various overhead lines, and other buildings It is o...

AI Technical Summary

Problems solved by technology

In industrial production, standard gauge block calibration or standard grid plane calibration method is often used. However, the above calibration methods require fixed camera position and focal length, which cannot be applied to field mobile operations such as power line inspection, water conservancy engineering survey, and wild animal survey. Appropriate Calibration Method

At the same time, the calculation of the object size and distance in the machine vision measurement method needs to accurately detect the edge of the object. Due to the influence of weather, light, etc., the images collected by field operations will inevitably have problems such as strong noise and low contrast, which will cause serious problems for the edge detection of objects. Difficulties, which in turn affect the accuracy of the final measurement results

Images