关键词: 道路提取, 标值点过程, 可逆跳跃马尔可夫链蒙特卡罗方法（RJMCMC）, 转移核

Abstract: The road network extracted by the traditional data model is not accurate enough, so a new data model is defined. The traditional birth-death process of searching is blindness and a new proposal nuclear is proposed based on edge detection, and it is greatly accelerating the convergence speed. For traditional proposal will destroy connectivity of the network, it designs a new proposal nuclear based on birth and death of the neighborhood and a new parameters proposal nuclear. Experimental results show that the improved algorithm greatly improves the convergence rate, and the extracted road networks are more accurate and continuous.

Key words: road extraction, marked point process, reversible jump Markov chain Monte Carlo method, proposal nuclear