Standing Water Detection

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

Result example when alert_mode is set to single:

{
     "event_type":1900544, 
     "task_id":"51d71bb66e6948969fd6156aa48ed36d",    
     "stream_id": "25292206-995f-4c31-bfd5-b0dd7bc389e7",
     "timestamp": 1611648991,
     "message_id": "CBC9C702-5FAE-11EB-9DA9-0242AC110002",
     "image_base64": "/3j24AAQSkZJRgABAQAAAQABAAD/2wBDAAIBAQE...",
     "data":{
         "event_set":[{
                  "bounding_box":{
                       "x": 0,
                       "y": 752,
                       "w": 1920,
                       "h": 328
                   }
        }]   
      }
}

When alert_mode is set to periodic, the results in JSON format when a waterlogging condition is detected are as follows:

{
     "event_type":1900544, 
     "task_id":"51d71bb66e6948969fd6156aa48ed36d",    
     "stream_id": "25292206-995f-4c31-bfd5-b0dd7bc389e7",
     "timestamp": 1611648991,
     "message_id": "CBC9C702-5FAE-11EB-9DA9-0242AC110002",
     "image_base64": "/3j24AAQSkZJRgABAQAAAQABAAD/2wBDAAIBAQE...",
     "data":{
         "water_logging_ratio":0.15,
         "water_logging_flag":true,
         "event_set":[{
                  "bounding_box":{
                       "x": 0,
                       "y": 752,
                       "w": 1920,
                       "h": 328
                   }
        }]   
      }
}

When alert_mode is set to periodic, the results in JSON format when a waterlogging condition is not detected are as follows:

{
     "event_type":1900544, 
     "task_id":"51d71bb66e6948969fd6156aa48ed36d",    
     "stream_id": "25292206-995f-4c31-bfd5-b0dd7bc389e7",
     "timestamp": 1611648991,
     "message_id": "CBC9C702-5FAE-11EB-9DA9-0242AC110002",
     "image_base64": "/3j24AAQSkZJRgABAQAAAQABAAD/2wBDAAIBAQE...",
     "data":{
         "water_logging_ratio":0.0,
         "water_logging_flag":false,
         "event_set":[]   
      }
}

JSON format

Field	Type	Description
event_type	Uint64	Event type for the output message. The value is fixed to 1900544, which is 0x 0000 0000 0001D0000 in hexadecimal format.
task_id	String	Task ID
stream_id	String	Camera ID
timestamp	Uint64	Time when the alarm is triggered
message_id	String	Alarm ID in the form of a UUID
image_base64	String	Base64 encoding results of the video image when the alarm is triggered
data	Object	Output in detail

data parameters

Field	Type	Description
water_logging_ratio	Float	Ratio of the waterlogged area to the detection area. This parameter is available only when the detection interval is set. The value range is [0,1].
water_logging_flag	Bool	Whether waterlogging has occurred. This parameter is available only when the detection interval is set.
event_set	List<Object>	List of events generated

event_set parameters

Field	Type	Description
bounding_box	Object	Minimum bounding rectangle of the waterlogged area in the alarm output

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