Wrong-Way Driving Detection

Data streams in JSON format are output to the specified DIS channels or webhook URLs, including structured data and images.

Result example:

{
	"event_type": 75009,
	"task_id": "a066974ae7334649a37257242c5fa4c3",
	"stream_id": "03543400000000000101#1c471506397a48ecab0ba52360bdd430",
	"timestamp": 1535546604,
	"message_id": "0DD1BEA6-634B-11E8-8B0B-407D0FAD9218",
	"image_base64": "/9j/4AAQSkZJRgABAJDA...",
	"data": {
		"vehicles": [{
			"bounding_box": {
				"x": 858,
				"y": 200,
				"w": 679,
				"h": 535
			},
                      "license_plate_id": "XXXXXX",
                      "license_plate_type": 0,
                      "direction": 0
		}]
	}
}

JSON format

Field	Type	Description
event_type	Int	Output flag of the vehicle detection result. The value is fixed to 75009.
message_id	String	UUID of the JSON output, which uniquely identifies the output record
stream_id	String	Camera ID, which uniquely identifies a camera. For offline videos, video names are displayed to distinguish between different video sources.
timestamp	Int	Timestamp when a vehicle is detected
data	Object	List of fields in the vehicle detection result. For details, see the description of data parameters.
image_base64	String	Base64 code of an image
task_id	String	Task ID

data parameters

Field

Type

Description

vehicles

List<Object>

List of output vehicles

Field	Type	Description
vehicles	List<Object>	List of output vehicles

vehicles parameters

Field	Type	Description
bounding_box	Object	Coordinates of a bounding box
license_plate_id	String	License plate. When the license plate cannot be recognized, an empty string is output.
license_plate_type	Int	Color of license plate. 0 indicates unknown, 1 indicates blue, 2 indicates yellow, 3 indicates green (new energy vehicle), 4 indicates white, and 5 indicates black. If the license plate cannot be recognized, the output is 0.
direction	Int	Vehicle direction. 0: approaching. The vehicle head is captured. 1: leaving. The vehicle rear is captured.

bounding_box parameters

Field	Type	Description
x	Int	Horizontal coordinate of the upper-left corner of a bounding box
y	Int	Vertical coordinate of the upper-left corner of a bounding box
w	Int	Width of a bounding box
h	Int	Height of a bounding box