Recreation Fields 2023

The perimeter of all public and private sport/recreation courts, including clay, grass, dirt, and paved surfaces are captured. Each court is delineated separately even if adjacent. Pavement around the recreation court is captured as sidewalk, not recreation court. Courts are defined as: Basketball Court: full outline of the court Tennis Court: full outline of the court Baseball Field: infield and outfield of a baseball area as one polygon if easily defined in aerial photo. Otherwise infield as the baseball field. Football Field: full outline of the field as best defined in aerial photo. Soccer Field: full outline of the field as best defined in aerial photo. Track: outline of track. Any recreation fields within tracks are captured and coded separately. Other Recreation Area: For areas that cannot be easily defined by function, they are captured as other recreation area, with full outline of the field as best defined in aerial photo.本数据集采集所有公共与私人运动/休闲场地的轮廓，涵盖黏土场、草地场、泥土地场及铺装场地。即便场地相邻，亦会对每个场地单独进行标注划分。休闲场地周边的铺装区域将被归类为人行道，而非运动/休闲场地。 各类场地的定义标准如下： - 篮球场（Basketball Court）：采集场地的完整轮廓； - 网球场（Tennis Court）：采集场地的完整轮廓； - 棒球场（Baseball Field）：若航拍影像中可清晰界定范围，则将棒球区域的内场与外场合并为单个多边形；若无法清晰界定，则以内场作为棒球场的范围； - 橄榄球场（Football Field）：依据航拍影像的最佳识别结果，采集该场地的完整轮廓； - 足球场（Soccer Field）：依据航拍影像的最佳识别结果，采集该场地的完整轮廓； - 跑道（Track）：采集跑道的轮廓。跑道内部包含的所有休闲场地，需单独采集并进行编码标注； - 其他休闲区域（Other Recreation Area）：对于无法通过功能属性清晰界定的区域，按照航拍影像中可识别的场地完整轮廓进行采集标注。