CAJ | 학술논문

一般假设的平行光光源，即远光源模型，受安装空间的约束在现实世界中很难实现。针对这一问题，提出了近光源模型解决近光源大尺寸物体的三维重建。近光源模型是一种新型的光源位置假设，需要标定光源位置，计算目标物体每个点上的光线方向，这样即使当物体尺寸较大或距离光源较近时，近光源模型也是对光源较优的一种假设。通过分析上述两种光源模型对噪声、光源到目标物体距离等因素的敏感度，比较发现当光源距离物体较近或物体尺寸较大的情况下，近光源模型的重建结果优于远光源的重建结果。
일반가설적평행광광원，즉원광원모형，수안장공간적약속재현실세계중흔난실현。침대저일문제，제출료근광원모형해결근광원대척촌물체적삼유중건。근광원모형시일충신형적광원위치가설，수요표정광원위치，계산목표물체매개점상적광선방향，저양즉사당물체척촌교대혹거리광원교근시，근광원모형야시대광원교우적일충가설。통과분석상술량충광원모형대조성、광원도목표물체거리등인소적민감도，비교발현당광원거리물체교근혹물체척촌교대적정황하，근광원모형적중건결과우우원광원적중건결과。
Distant illumination model,assuming parallel light source,is generally difficult to implement in the real world,where the work-ing space is constrained. To deal with this problem,a nearby light model is proposed to solve the three-dimensional reconstruction of the large-size objects near the light source. A nearby light source model is a new light position assuming,which works with calibrated light source position,calculated light vector across whole target object,even when the object is larger or closer to the light sources,the nearby light source model is also a better assumption. By analyzing the sensitivity of above two model for noise and distance between light source and target object,found that the reconstruction result of nearby source model is better than that from distant source model when the light source is closer to object or the object is larger.