Abstract: A system generates applications based on a domain specific language (DSL). The applications allow a user to take measurements based on user movements using a client device (for example, a mobile phone) for providing to an expert. The domain specific language includes commands that cause the generated applications to perform various tasks, such as providing specific instructions to the user, starting and stopping recording, taking measurements, and so on. The system compiles the DSL specification to generate executable instructions that are deployed (for example, on a client device such as a mobile phone). The DSL specification allows users to specify virtual points based on multiple landmarks obtained from the images of the user. The DSL specification allows users to specify a point as a stable point for landmarks that are expected to be stationary but move across frames.

Abstract: In one implementation, a computer-implemented method includes receiving, at a mobile computing device and after transmitting an order, information that identifies a delivery worker who is handling delivery of the order; continuously updating an interface presented by the mobile computing device until the order has been delivered, the interface identifying a current location of the delivery worker relative to a current location of the mobile computing device as both of the current locations change over time, the continuously updating including: determining, by the mobile computing device, the current location of the mobile computing device; receiving, at the mobile computing device, the current location of the delivery worker; and presenting, by the mobile computing device, the interface depicting the current location of the delivery worker relative to the current location of the mobile computing device.

Abstract: Techniques are described for measuring acceleration of a vehicle with a mobile device. The techniques are applied to detect excessive acceleration events of the vehicle. The techniques are implemented in a mobile device that includes an accelerometer, a global positioning system (GPS) sensor, and a processor configured to identify an excessive acceleration event of a vehicle that the mobile device is located in. The processor is configured to receive, from the accelerometer, a first acceleration data when the vehicle is a rest and a second acceleration data when the vehicle is moving. The processor is also configured to determine, based on the first acceleration data, a gravity vector, and determine, based on the second acceleration data, an acceleration vector for the mobile device.

Abstract: An intersection assistance system includes at least one vehicle sensor and a gap estimator. The vehicle sensor is configured to obtain vehicle information on vehicles approaching the intersection along a main roadway. The gap estimator is configured to estimate gap information relating to a gap between the vehicles based on the vehicle information. The gap information includes a length of the gap, a location of the gap, and a velocity of the gap. In a method of obtaining information for use in assisting a driver of an entering vehicle to safely enter an intersection, vehicle information is obtained on vehicles traveling toward the intersection on a main roadway. Next, gap information is estimated relating to a gap between the vehicles based on the vehicle information. The gap information includes a length of the gap, a location of the gap, and a velocity of the gap.

Abstract: An intersection assistance system includes at least one vehicle sensor and a gap estimator. The vehicle sensor is configured to obtain vehicle information on vehicles approaching the intersection along a main roadway. The gap estimator is configured to estimate gap information relating to a gap between the vehicles based on the vehicle information. The gap information includes a length of the gap, a location of the gap, and a velocity of the gap. In a method of obtaining information for use in assisting a driver of an entering vehicle to safely enter an intersection, vehicle information is obtained on vehicles traveling toward the intersection on a main roadway. Next, gap information is estimated relating to a gap between the vehicles based on the vehicle information. The gap information includes a length of the gap, a location of the gap, and a velocity of the gap.