Low Cost 3D Laser Scanner

Abstract

The invention relates to a low-cost three-dimensional laser scanner. Laser and a CMOS (complementary metal oxide semiconductor) camera are combined for scanning an actual scene, image processing is performed, and a three-dimensional coordinate message is calculated. As is shown in an abstract attached picture, an MSP430 microprocessor is taken as a control mechanism, a line laser on a rotation table is used for projecting line laser to a to-be-detected scene or object, the CMOS camera provided with an optical filter is used for shooting the scene, the image processing is performed after a PC terminal acquires a shot picture, data are calculated, and a three-dimensional point cloud is obtained, so that three-dimensional space is scanned and reconstructed, and the computer is cognized.

Description

(1) Technical field [0001] The invention is a low-cost three-dimensional laser scanner. The device uses a laser combined with a CMOS (ComplementaryMetalOxideSemiconductor, which refers to a complementary MOS integrated circuit manufacturing process composed of complementary metal oxides (PMOS tube and NMOS tube)) camera to scan the actual scene and calculate the three-dimensional coordinate information through image processing. It involves hardware drive and control technology, image processing technology, data calculation algorithm, etc., and the cost of the device is low, and the control technology is relatively simple. It is suitable for spatial scanning reconstruction and achieves the purpose of computer cognition. (2) Background technology [0002] At present, the most important high-tech that is recognized by the global industry as the fastest growing and increasingly widely used is optoelectronic technology. In the field of distance measurement, optoelectronic technol...

AI Technical Summary

Problems solved by technology

[0004] At present, the finished 3D laser scanners are mostly applied to large-scale projects such as architectural model construction, so the scanner structure is complex and the price is relatively high. For example, Topcon’s GLS-1500 is priced at 1,000,000 yuan; Optech’s The price of ILRIS-3D is 2,000,000 yuan; the price of IMAGER5010 of German Z+F company is 2,300,000 yuan

In this case, many subjects that need to apply 3D laser scanning choose 1D or 2D scanners to build their own platforms to achieve 3D effects, but the accuracy and speed are difficult to guarantee, which directly reflects the low cost of 3D laser scanners. The practical prospect and research significance of

[0005] Due to the extremely fast propagation speed of the laser, the high scanning rate requirements, the difficulty in ensuring the distance measurement accuracy, the complex software reconstruction and other high challenges, the project has many difficulties in hardware and software, making many projects based on laser distance measurement. higher threshold

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