Title :
Optimum packing of convex-polygons by a new data structure sequence-table
Author :
Yamazaki, Hiroyuki ; Sakanushi, Keishi ; Kajitani, Yoji
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
Abstract :
The convex-polygon packing problem is to arrange given convex-polygons without overlapping each other in a bounding box of minimum area. This paper proposes a new algorithm. A solution space of convex-polygon packings is constructed by a new data-structure called the sequence-table which can represent topological relations between two convex-polygons. The algorithm searches the solution space stochastically for an optimum packing. The solution space has two important properties, i.e. every solution is feasible and an optimal solution is included. In our experiments, the system based on simulated annealing was shown to output highly compacted packings of convex-polygons
Keywords :
VLSI; circuit layout CAD; data structures; integrated circuit layout; network topology; simulated annealing; VLSI layout; bounding box; convex-polygon packing problem; convex-polygons; highly compacted packings; minimum area; optimum packing; sequence-table data structure; simulated annealing; solution space; topological relations; Algorithm design and analysis; Clothing; Compaction; Data structures; Quadratic programming; Simulated annealing; Space technology; Steel;
Conference_Titel :
Circuits and Systems, 2000. IEEE APCCAS 2000. The 2000 IEEE Asia-Pacific Conference on
Conference_Location :
Tianjin
Print_ISBN :
0-7803-6253-5
DOI :
10.1109/APCCAS.2000.913647