小规模地理场景中点要素三维注记优化配置算法
地理场景中点要素三维注记配置规则多为“遮挡则不显示”和“遮挡直接显示”，该类规则的缺陷是注记信息丢失或存在大量遮挡，普适性不强，尤其不适用于小规模地理场景点要素三维注记配置。本文首先归纳了三维注记绘制的内容、位置及方法，并针对小规模地理场景点要素三维注记配置问题，以“信息不丢失、注记尽可能少的遮挡”为配置目标，配置规则为“遮挡后优化并显示”。算法以透视变换矩阵、逆透视变换矩阵及GRID算法为基础，以遗传算法为核心，以三维注记质量评价函数为遗传算法适应度评价函数，实现点要素三维注记的可行最优解求解。经多视角、多平台对照试验可知，本算法适用于多视角三维注记优化配置，具备普适性；与主流GIS平台（S...
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| Veröffentlicht in: | Ce hui xue bao 2016-12, Vol.45 (12), p.1476 |
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| creator | 周鑫鑫 吴长彬 孙在宏 丁远 贺涛 |
| description | 地理场景中点要素三维注记配置规则多为“遮挡则不显示”和“遮挡直接显示”，该类规则的缺陷是注记信息丢失或存在大量遮挡，普适性不强，尤其不适用于小规模地理场景点要素三维注记配置。本文首先归纳了三维注记绘制的内容、位置及方法，并针对小规模地理场景点要素三维注记配置问题，以“信息不丢失、注记尽可能少的遮挡”为配置目标，配置规则为“遮挡后优化并显示”。算法以透视变换矩阵、逆透视变换矩阵及GRID算法为基础，以遗传算法为核心，以三维注记质量评价函数为遗传算法适应度评价函数，实现点要素三维注记的可行最优解求解。经多视角、多平台对照试验可知，本算法适用于多视角三维注记优化配置，具备普适性；与主流GIS平台（SuperMap Desktop、ArcScene）的三维注记配置效果作对比，本算法三维注记质量值分别相对提升144%、232%，符合配置目标。 |
| doi_str_mv | 10.11947/j.AGCS.2016.20160210 |
| format | Article |
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| subjects | Algorithms Annotations Configurations Genetic algorithms Genetic transformation Occlusion Placement Platforms Quality assessment Transformations (mathematics) |
| title | 小规模地理场景中点要素三维注记优化配置算法 |
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