计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2013年
17期
150-153
,共4页
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
道路提取%標值點過程%可逆跳躍馬爾可伕鏈矇特卡囉方法(RJMCMC)%轉移覈
도로제취%표치점과정%가역도약마이가부련몽특잡라방법(RJMCMC)%전이핵
road extraction%marked point process%reversible jump Markov chain Monte Carlo method%proposal nuclear
研究了标值点过程的道路提取算法，针对传统数据模型提取道路不够准确的缺点，改进了数据模型。提出了基于边缘检测的生灭转移核，避免了传统的生灭过程搜索的盲目性，大大加快了算法的收敛速度。针对传统转移核容易破坏线段的连接性的缺点，定义了多种新型的RJMCMC转移核，重新设计了基于邻域的生灭转移核及线段参数转移核。仿真结果表明，改进算法大大提高了收敛速度，并且提取的道路网络更准确，更连续。
研究瞭標值點過程的道路提取算法，針對傳統數據模型提取道路不夠準確的缺點，改進瞭數據模型。提齣瞭基于邊緣檢測的生滅轉移覈，避免瞭傳統的生滅過程搜索的盲目性，大大加快瞭算法的收斂速度。針對傳統轉移覈容易破壞線段的連接性的缺點，定義瞭多種新型的RJMCMC轉移覈，重新設計瞭基于鄰域的生滅轉移覈及線段參數轉移覈。倣真結果錶明，改進算法大大提高瞭收斂速度，併且提取的道路網絡更準確，更連續。
연구료표치점과정적도로제취산법，침대전통수거모형제취도로불구준학적결점，개진료수거모형。제출료기우변연검측적생멸전이핵，피면료전통적생멸과정수색적맹목성，대대가쾌료산법적수렴속도。침대전통전이핵용역파배선단적련접성적결점，정의료다충신형적RJMCMC전이핵，중신설계료기우린역적생멸전이핵급선단삼수전이핵。방진결과표명，개진산법대대제고료수렴속도，병차제취적도로망락경준학，경련속。
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.
