Qiang Ji and R. M. Haralick, Breakpoint Detection Using covariance propagation, IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 20, No. 8, August 1998. download the paper
	Qiang Ji and Robert M. Haralick, Error Propagation for the Hough Transform, vol. 20, pp813-823, 2001, Journal of Pattern Recognition Letters. download the paper
	Qiang Ji and Robert M. Haralick Efficient Facet Edge Detection and Quantitative Performance Evaluation, Journal of Pattern Recognition, Vol. 35 no. 3, pages 689 - 700, 2002. download the paper
	Qiang Ji and Yonghong Xie, Randomized Hough Transform with Error Propagation for Line and Circle Detection, accepted by Pattern Analysis and Application.
	Qiang Ji and Robert M. Haralick, Corner Detection with Covariance Propagation, IEEE Computer Society Conference on Computer Vision and Pattern Recognition, June, 1997.
	Qiang Ji and Robert Haralick, A statistical framework for geometric tolerancing manufactured parts, in 14th International Conference on Pattern Recognition (ICPR), Brisbane, Australia, August, 1998. download the paper
	Qiang Ji and Robert M. Haralick, Quantitative Evaluation of Edge Detectors Using the Minimum Kernel Variance Criterion, in 1999 IEEE International Conference on Image Processing, Kobe, Japan, October, 1999. download the paper
	Qiang Ji and Robert M. Haralick, A Statistically Efficient Method for Ellipse Detection, in 1999 IEEE International Conference on Image Processing, Kobe, Japan, October, 1999. download the paper
	Qiang Ji and Robert M. Haralick,An Optimal Bayesian Hough Transform for Line Detection, in 1999 IEEE International Conference on Image Processing, Kobe, Japan, October, 1999.
	Qiang Ji and Robert M. Haralick, Error Propagation for Computer Vision Performance Characterization, in 1999 International Conference on Imaging Science, Systems, and Technology, Las Vegas, June, 1999. download the paper
	Yong H Xie and Qiang Ji, Effective Line Detection with Error Propagation, IEEE International Conference on Image Processing (ICIP'2001), Thessaloniki, Greece, October 7-10, 2001. download the paper
	Yonghong Xie and Qiang Ji, A New Efficient Ellipse Detection Method, International Conference on Pattern Recognition, 2002. download the paper