红河学院学报
紅河學院學報
홍하학원학보
JOURNAL OF HONGHE UNIVERSITY
2012年
2期
18-22
,共5页
曾建华%朱云东%方玉萍%刘微%段剑金%李泽东%李宏宁%杨卫平
曾建華%硃雲東%方玉萍%劉微%段劍金%李澤東%李宏寧%楊衛平
증건화%주운동%방옥평%류미%단검금%리택동%리굉저%양위평
双向反射分布函数BRDF%粗糙目标表面%简化模型
雙嚮反射分佈函數BRDF%粗糙目標錶麵%簡化模型
쌍향반사분포함수BRDF%조조목표표면%간화모형
bidirectional reflectance distribution function(BRDF)%rough target surface%simplified model
利用从五参量模型简化而来的BRDF模型对水泥板、花岗岩的实验数据进行优化拟合.通过与实测数据比较,结果表明,二参量模型对粗糙度大的目标表面BRDF统计建模是完全可行、有效的,但对粗糙度小的目标表面不适用.而三参量、四参量模型对各种样片表面都能得到较好的拟合效果.简化模型的准确性为粗糙目标表面统计建模简化了计算、节约了时间,便于进一步对粗糙目标作相关的多光谱成像研究与仿真.
利用從五參量模型簡化而來的BRDF模型對水泥闆、花崗巖的實驗數據進行優化擬閤.通過與實測數據比較,結果錶明,二參量模型對粗糙度大的目標錶麵BRDF統計建模是完全可行、有效的,但對粗糙度小的目標錶麵不適用.而三參量、四參量模型對各種樣片錶麵都能得到較好的擬閤效果.簡化模型的準確性為粗糙目標錶麵統計建模簡化瞭計算、節約瞭時間,便于進一步對粗糙目標作相關的多光譜成像研究與倣真.
이용종오삼량모형간화이래적BRDF모형대수니판、화강암적실험수거진행우화의합.통과여실측수거비교,결과표명,이삼량모형대조조도대적목표표면BRDF통계건모시완전가행、유효적,단대조조도소적목표표면불괄용.이삼삼량、사삼량모형대각충양편표면도능득도교호적의합효과.간화모형적준학성위조조목표표면통계건모간화료계산、절약료시간,편우진일보대조조목표작상관적다광보성상연구여방진.
In this paper, a BRDF five-parameter model is simplified as two-parameter model, three-parameter model and four-parameter model. The experimental data of the cement board and moorstone is fit with the simplified models. By comparison with the measured data, the results show that the two-parameter model are entirely feasible and effective for the target surface roughness BRDF statistical modeling, but not applying for the small target surface roughness. The three- parameter model and the four-parameter model can get a better fitting result for a variety of sample surface. The accuracy of the simplified model for the statistical modeling of rough target surface can simplify the calculation, save time and facilitate further the research of multi-spectral imaging and simulation related to the rough target .