Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for fall detection using data for a person's shadow. One of the methods includes obtaining, from a camera, an image of a portion of a property; determining whether a shadow is likely depicted in the image; in response to determining that a shadow is likely depicted in the image, determining whether the shadow in the image likely represents a potentially falling person; and in response to determining that the shadow in the image likely represents a potentially falling person, performing one or more actions for the potentially falling person.

Abstract: A monitoring system that is configured to monitor a property is disclosed. The monitoring system includes a thermal camera that is configured to generate a thermal image of the property. The monitoring system further includes a monitor control unit that is configured to receive, from the thermal camera, the thermal image. The monitor control unit is further configured to, based on the thermal image, determine a temperature of a portion of the property depicted in the thermal image. The monitor control unit is further configured to determine that the temperature of the portion of the property depicted in the thermal image satisfies a temperature threshold. The monitor control unit is further configured to, based on determining that the temperature of the portion of the property depicted in the thermal image satisfies the temperature threshold, select and perform a monitoring system action.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for pathogen detection. One of the methods includes providing, to a classifier, sensor data for a physical area, at a property, to cause the classifier to generate output data using the sensor data; receiving, from the classifier, the output data that indicates whether a pathogen was likely detected; detecting, using the output data, a likely pathogen in the physical area; determining whether to provide an alert given the detection of the likely pathogen; and in response to determining whether to provide the alert given the detection of the likely pathogen, selectively providing, to a device, the alert to cause the device to present the alert or determining to skip providing the alert.

Abstract: A monitoring system that is configured to monitor a property is disclosed. The monitoring system includes a thermal camera that is configured to generate a thermal image of the property. The monitoring system further includes a monitor control unit that is configured to receive, from the thermal camera, the thermal image. The monitor control unit is further configured to, based on the thermal image, determine a temperature of a portion of the property depicted in the thermal image. The monitor control unit is further configured to determine that the temperature of the portion of the property depicted in the thermal image satisfies a temperature threshold. The monitor control unit is further configured to, based on determining that the temperature of the portion of the property depicted in the thermal image satisfies the temperature threshold, select and perform a monitoring system action.

Abstract: A monitoring system that is configured to monitor a property is disclosed. The monitoring system includes a thermal camera that is configured to generate a thermal image of the property. The monitoring system further includes a monitor control unit that is configured to receive, from the thermal camera, the thermal image. The monitor control unit is further configured to, based on the thermal image, determine a temperature of a portion of the property depicted in the thermal image. The monitor control unit is further configured to determine that the temperature of the portion of the property depicted in the thermal image satisfies a temperature threshold. The monitor control unit is further configured to, based on determining that the temperature of the portion of the property depicted in the thermal image satisfies the temperature threshold, select and perform a monitoring system action.

Abstract: A monitoring system that is configured to monitor a property is disclosed. The monitoring system includes a thermal camera that is configured to generate a thermal image of the property. The monitoring system further includes a monitor control unit that is configured to receive, from the thermal camera, the thermal image. The monitor control unit is further configured to, based on the thermal image, determine a temperature of a portion of the property depicted in the thermal image. The monitor control unit is further configured to determine that the temperature of the portion of the property depicted in the thermal image satisfies a temperature threshold. The monitor control unit is further configured to, based on determining that the temperature of the portion of the property depicted in the thermal image satisfies the temperature threshold, select and perform a monitoring system action.

Abstract: Methods and systems including computer programs encoded on a computer storage medium, for event detection through variable bitrate of a video. A method includes obtaining bitrate information that describes bitrates for portions of a video, determining bitrate criteria that corresponds to a likely occurrence of an event being shown in the video, determining that the bitrate indicated by the bitrate information for a particular portion of the video satisfies the bitrate criteria, in response to determining that the bitrate indicated by the bitrate information for the particular portion of the video satisfies the bitrate criteria, determining that an instance of the event is likely to be shown in the particular portion of the video, and providing a user device an indication that the event is likely to be shown in the particular portion of the video.

Abstract: A monitoring system that is configured to monitor a property is disclosed. The monitoring system includes a thermal camera that is configured to generate a thermal image of the property. The monitoring system further includes a monitor control unit that is configured to receive, from the thermal camera, the thermal image. The monitor control unit is further configured to, based on the thermal image, determine a temperature of a portion of the property depicted in the thermal image. The monitor control unit is further configured to determine that the temperature of the portion of the property depicted in the thermal image satisfies a temperature threshold. The monitor control unit is further configured to, based on determining that the temperature of the portion of the property depicted in the thermal image satisfies the temperature threshold, select and perform a monitoring system action.