Method and system for tracking context

In one implementation, a method of tracking a context is performed at a device that includes an image sensor, one or more processors, and a non-transitory memory. The method includes capturing an image of an environment at a particular time using the image sensor. The method includes detecting a context based at least in part on an image of an environment. The method includes, in accordance with a determination that the context is included within a predefined context set, storing an entry in a database including data indicative of the detected context in association with data indicative of a particular time. The method includes receiving a query regarding a context. The method includes providing a response to the query based on the data indicative of the particular time. 在一个具体实施中，一种跟踪情境的方法在包括图像传感器、一个或多个处理器和非暂态存储器的设备处执行。该方法包括使用该图像传感器在特定时间捕获环境的图像。该方法包括至少部分地基于环境的图像来检测情境。该方法包括：根据确定情境被包括在预定义的情境集合内，在数据库中与指示特定时间的数据相关联地存储包括指示检测到情境的数据的条目。该方法包括接收关于情境的查询。该方法包括基于指示特定时间的数据来提供对查询的响应。