Affiliation of Author(s):地球科学与信息学院
Teaching and Research Group:测绘与遥感科学系
Journal:Geotechnical Investigation ＆ Surveying
Key Words:photogrammetry; direct linear transformation; approximated maximum likelihood estimation
Abstract:Direct Linear Transformation is a widely used analytical approach in photogrammetry and computer vision fields．Traditional method for DLT is least squares estimation with over-determined linear equations with L12= 1 ，and without consideration of image points and corresponding 3 D coordinates errors．Total least squares methods regard the design matrix error as the independent and identical Gaussian noise，which is always not true in application case． A new method named Approximated Maximum Likelihood Estimation is presented in this paper，it depends on the residual covariance through first order
Co-author:邓才华, 周拥军
Indexed by:Unit Twenty Basic Research
Discipline:测绘科学与技术
Document Type:J
Issue:12
Page Number:50-54
Translation or Not:no