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in red & green represent expanded nodes (nodes in closed set). The color indicate the distance (in the graph) of a node from the start node (red: lower, green: higher). The empty nodes with blue boundary are the ones in open set. The nodes of the graph are generated on the fly, and nodes falling inside the obstacle are discarded as inaccessible. Note that
Dijkstra's is a special case of the
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is created by uniform square discretization of a 2-dimensional planar region, placing a node in each discretized cell, and connecting each node with its 8 neighbors using bidirectional edges. Cost of edges are same as their
Euclidean lengths. The gray shape represents an obstacle. The filled circles
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is identically 0. Note how the nodes are expanded almost uniformly in all directions. The number of nodes expanded is significantly higher when compared with the
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Add a one-line explanation of what this file represents
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same search problem solved using A* search algorithm
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55:, looped, 382 frames, 43 s)
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1456:迪卡斯特拉演算法
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1466:戴克斯特拉算法
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