- From: MichaelFoundation via GitHub <sysbot+gh@w3.org>
- Date: Sun, 01 Nov 2020 20:29:35 +0000
- To: public-sdwig@w3.org
> **Background** > > > > Emerging markets in 'mobile video devices' such as dashcams, drones, body-worn video and smartphones are increasing consumer demand for geotagged video on the web and especially with access to moving objects, e.g. distance & speed for vehicles, and sensor data, e.g. heart rate for fitness users. > > > > Web browser integration of timed video metadata enables users to easily access and share their data with the online community and makes geotagged videos accessible to web search engines in a common format. [OGC Testbed-16 Full Motion Video to Moving Features task](https://portal.ogc.org/files/?artifact_id=91644#PartFMV) has highlighted benefits of exporting embedded (in-band) metadata to a separate, linked (out-of-band) file for web access using [Web Video Map Tracks (WebVMT)](https://w3c.github.io/sdw/proposals/geotagging/webvmt/), including the need for a web API for moving objects & sensors. > > > > **Discussion** > > > > Key concepts include: > > 1. **Data sync** to synchronise timed metadata, including location, with video on the web; > > 1. **Interpolation** to represent intermediate values between sample points for sensors and locations; > > 1. **Moving objects** to determine distance, speed, etc. from a timed location sequence (trajectory); > > 1. **3D coordinates** to (optionally) include height/altitude/elevation, though 2D should be the initial focus. > > > > The aim is to draft a lightweight solution, so consideration should be given to: > > 1. **Relevance** with identified common use cases; > > 1. **Flexibility** to accommodate most use cases; > > 1. **Simplicity** to minimise design complexity & processing overheads; > > 1. **Alignment** with existing standards. > > > > Participants are urged to join and contribute to the [WebVMT Community Group (CG)](https://www.w3.org/community/webvmt-cg/) where [GitHub issues](https://github.com/webvmt/community-group/) form focal points for the key issues to enable ideas to be shared and discussed before the [TPAC meeting](https://www.w3.org/2020/10/TPAC/). > > > > **Objectives** > > > > The goal is to draft a justified list of properties for inclusion in a web API which is designed for accessing moving objects & sensors in a browser and suitable for 'mobile video devices.' > > > > **Participation** > > > > All participants should [register for TPAC 2020](https://www.w3.org/2020/10/TPAC/registration.html). > > > > Please add relevant comments to the following issues which will be used to capture feedback by Friday 23 October 2020: > > * Data [Apprehended](https://github.com/webvmt/community-group/issues/1) with video; > > * Data [interpolation](https://github.com/webvmt/community-group/issues/2) between samples; > > * Data [attributes](https://github.com/webvmt/community-group/issues/3) for moving objects & sensors; > > > > These issues will form the basis of discussion and the conclusions agreed at the breakout meeting in the week 26-30 October 2020. -- GitHub Notification of comment by MichaelFoundation Please view or discuss this issue at https://github.com/w3c/sdw/issues/1194#issuecomment-720146793 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Sunday, 1 November 2020 20:29:37 UTC