摘要
未校准的光度立体技术(PMS)在重建物体三维形状时比经典的PMS的光照约束条件低,增加了在实际应用时的灵活性;但未校准PMS算法需要同时估算输入图像的光参数以及物体的三维形状,算法的求解难度也随之提高。提出一种基于未校准PMS和参照物的算法来估算目标物体的三维形状和反照率;并通过实验对合成物体以及自然光环境下的真实物体进行了三维重建。实验结果验证了算法的准确性和有效性。
The lighting constraints is lower in the three-dimensional reconstruction using uncalibrated photometric stereo,which increase the flexibility in actual applications,than those of the classic PMS. But in uncalibrated photometric stereo,the lighting parameters of the input images and the three-dimensional shape of the target object require to be estimated at the same time,and the complexity of solving this problem will be greatly increased. An uncalibrated photometric stereo method with reference object that can be used to estimate the three-dimensional shape of the target object was proposed and its albedo,and the experiment results in reconstruction of a synthetic object and real objects under the natural and mixed lighting environments verify the accuracy and effectiveness of the proposed algorithm.
出处
《科学技术与工程》
北大核心
2017年第35期262-267,共6页
Science Technology and Engineering
基金
国家自然科学基金(61602229
61501278)
山东省自然基金(ZR2016FM13
ZR2016FM21
ZR2015FQ013)资助
关键词
表面法向量
反照率
球谐模型
参照物
surface normal
albedo
spherical harmonic model
reference object
