记录伦敦的自治市镇来解决停车问题

作者：Penny Boviatsou

Spending hours looking for parking space on busy city roads and parking lots is a serious matter. Cities across the world keep struggling with the problem with wasted fuel, and emissions adding up to the economic and non-economic impact of parking hunting.

Parking app technology is on the rise offering users cashless payments and helping drivers find and reserve parking spaces and avoid parking tickets.

托运, a London-based kerbside management and mobility technology firm, operates an屡获殊荣的停车应用这使用户可以看到和理解所有街道停车场，限制和操作时间，除了街外停车场，帮助用户在到达前的地方做出明智的选择。

“我们的任务是通过提供最佳的路边停车信息来使驾驶员的停车位忘记，以便他们可以找到最接近和最便宜的选择。我们还与地方当局紧密合作，以帮助他们通过数据驱动的解决方案更好地管理其Kerbside资产，以提高驾驶员和企业的合规性和安全访问权限，”Appyparking首席执行官兼创始人Dan Hubert说。

需要调查伦敦的Kerbsides需要create an accurate map of all parking zones跨首都。停车公司接近Getmapping Plc是航空摄影，移动映射，激光雷达，数字地图和基于Web的服务的领先提供商，旨在对伦敦的停车场进行移动地图调查。

在捕获和处理大量地理空间数据方面拥有20多年的经验，GetMapping投资了两个Leica Pegasus：两个终极移动地图系统调查伦敦的自治市镇欧洲最大的移动映射项目。

Efficient data capture through mobile mapping

项目计划对项目的成功至关重要。GetMapping希望确保该项目按计划顺利进行。最初的捕获六个伦敦自治市镇的停车数据在2017/18秋季需要，到2018年前六个月的进步阶段。

A team of three surveyors drove每天25公里与Leica Pegasus：两个在伦敦的行政区周围同时进行collect imagery and LiDAR data。在整个冬季，可以进行测量，这是可能的，并且在道路上不需要测量师或交通管理人员 - 所有数据都是从车辆的安全性中捕获的。

数据收集完成后，将数据转移回了硬盘的办公室。两个团队成员使用徕卡Pegasus:Managerto produce the Simultaneous Localisation and Mapping (SLAM) corrected trajectory, along with panoramic imagery and coloured point clouds.

“测量方法和移动映射系统的进展为收集道路数据的新观点开辟了新的观点。借助Leica Pegasus：两个最终，我们能够平稳收集数据，在伦敦附近的调查站点周围旅行，无需交通管理或封路，”GetMaping集团创新总监Martin Tocher说。

更多数据，更快

进一步捕获停车数据13 London boroughs立即开始，并于2018年中期完成。

Getmapping purchased one Pegasus:Two Ultimate mobile mapping system and upgraded the existing Pegasus:Two to the Ultimate version to complete this project. The Pegasus:Two Ultimate allows capture in a variety of lighting conditions and vehicle speeds - a higher dynamic range is enabled by a large sensor to pixel ratio and a dual-light sensor. Photogrammetry and image quality are improved with the increased side camera resolution of 12 megapixels and onboard JPEG compression.

“ Leica Pegasus：两个Utlimate的高分辨率相机系统提供了更好的图像质量，以及双鱼眼相机系统提供了“免费缝制””pictures,” said Alexandre Alves, European operations manager at Getmapping.“By utilising Leica Geosystems’ latest mobile mapping technology, which has three times the resolution compared to a standard system, the volume of data handled by Getmapping increased threefold, and we upscaled our processing resources to handle the huge volume of data that phase two required.”

After100 days of surveying，这两个阶段的结果是：

• Surveys of all伦敦19号行政区的停车区和五个城市
• 多于被捕获的6,500公里在具有多次通行证的城市环境中，以避免数据阻塞
• 100万个数据captured per second
• 收集的原始数据的19台
• 52 terabytes of data delivered
• 27 features extracted per controlled parking zone
• Final relative accuracy better than1.5 centimetres
• 最终绝对accuracy better than 4 cm
• Maximised value – mobile mapping减少了平均调查时间乘以80％compared to traditional survey methods.

捕获的图像和点云数据以及相关的特征提取，使概述能够传递高清交通管理数据to their smart parking systems. Getmapping’s mobile mapping team delivered the final data ahead of time and also surveyed Brighton, Cambridge, Oxford, Portsmouth and Coventry to support AppyParking’s smart parking proposition. The customer’s expectation is to survey now cities around Europe.