TLS強(qiáng)度數(shù)據(jù)的入射角及距離效應(yīng)改正方法
發(fā)布時(shí)間:2018-12-12 10:11
【摘要】:通過分離目標(biāo)反射率、入射角及距離三個(gè)因素,利用Weierstrass定理,將激光強(qiáng)度表示成三個(gè)因素多項(xiàng)式函數(shù)的乘積形式,提出一種新的地面三維激光掃描(terrestrial laser scanning,TLS)激光強(qiáng)度改正模型。利用不同反射率的漫反射目標(biāo),設(shè)計(jì)入射角與距離實(shí)驗(yàn),確定各個(gè)多項(xiàng)式的次數(shù)及系數(shù),求取改正后激光強(qiáng)度值。實(shí)驗(yàn)結(jié)果表明,與現(xiàn)有改正模型進(jìn)行比較,本文模型能精確地對激光強(qiáng)度值進(jìn)行改正,并可以推廣到自然目標(biāo)強(qiáng)度數(shù)據(jù)的改正。
[Abstract]:By separating the three factors of target reflectivity, incidence angle and distance, and using Weierstrass theorem, the laser intensity is expressed as the product of polynomial function of three factors, and a new ground 3D laser scanning (terrestrial laser scanning, is proposed. TLS) laser intensity correction model. Using diffused reflectance target with different reflectivity, the experiment of incident angle and distance is designed, the degree and coefficient of each polynomial are determined, and the corrected laser intensity is obtained. The experimental results show that compared with the existing correction model, the proposed model can accurately correct the laser intensity value and can be extended to the correction of the natural target intensity data.
【作者單位】: 同濟(jì)大學(xué)測繪與地理信息學(xué)院;香港理工大學(xué)土地測量與地理資訊學(xué)系;
【基金】:國土環(huán)境與災(zāi)害監(jiān)測國家測繪地理信息局重點(diǎn)實(shí)驗(yàn)室開放基金(LEDM2014B05)~~
【分類號】:P225.2
本文編號:2374382
[Abstract]:By separating the three factors of target reflectivity, incidence angle and distance, and using Weierstrass theorem, the laser intensity is expressed as the product of polynomial function of three factors, and a new ground 3D laser scanning (terrestrial laser scanning, is proposed. TLS) laser intensity correction model. Using diffused reflectance target with different reflectivity, the experiment of incident angle and distance is designed, the degree and coefficient of each polynomial are determined, and the corrected laser intensity is obtained. The experimental results show that compared with the existing correction model, the proposed model can accurately correct the laser intensity value and can be extended to the correction of the natural target intensity data.
【作者單位】: 同濟(jì)大學(xué)測繪與地理信息學(xué)院;香港理工大學(xué)土地測量與地理資訊學(xué)系;
【基金】:國土環(huán)境與災(zāi)害監(jiān)測國家測繪地理信息局重點(diǎn)實(shí)驗(yàn)室開放基金(LEDM2014B05)~~
【分類號】:P225.2
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