Examples of JSON and XML LPR events for the HTTP extension

Examples of JSON and XML LPR events for the HTTP extension - SharpOS 11.5

SharpOS Administrator Guide 11.5

Applies to

SharpOS 11.5

Last updated

2017-10-10

Content type

Guides

Guides > Administrator guides

Language

English (United States)

Product

SharpOS

Version

11.5

When you send LPR data to an HTTP server, you can configure the system to send the data in XML or JSON format.

JSON format sample:

The following is an example of a license plate read event in JSON format.

NOTE: The binary image data has been removed from the example.

{ "ContextCameraName" : "Context Camera",
  "ContextImage" : "",
  "Id" : "32cf870a-46aa-4cfd-914b-00062d98e93a",
  "Latitude" : 0.0,
  "Longitude" : 0.0,
  "LprCameraName" : "Lpr Camera",
  "PlateAnalytics" : [ { "Key" : "State Name",
        "Score" : -1.0,
        "Value" : "-"
      },
      { "Key" : "Vehicle Type",
        "Score" : 1.0,
        "Value" : "-"
      },
      { "Key" : "Relative Motion",
        "Score" : -1.0,
        "Value" : "-"
      },
      { "Key" : "Context",
        "Score" : 1.0,
        "Value" : "US"
      },
      { "Key" : "Characters Height",
        "Score" : 1.0,
        "Value" : "70"
      }
    ],
  "PlateImage" : "",
  "PlateRead" : "AA7D2",
  "SourceUrl" : "SHARPXS0014",
  "Timestamp" : "2015-08-29T08:42:45.797"
}

XML format sample:

The following is an example of a license plate read event in XML format.

NOTE: The binary image data has been removed from the example.

<Plate>
  <ContextCameraName>Context Camera</ContextCameraName>
  <ContextImage/>
  <Id>32cf870a-46aa-4cfd-914b-00062d98e93a</Id>
  <Latitude>0.0</Latitude>
  <Longitude>0.0</Longitude>
  <LprCameraName>Lpr Camera</LprCameraName>
  <PlateAnalytics>
    <PlateAnalytics>
      <Key>State Name</Key>
      <Score>-1.0</Score>
      <Value>-</Value>
    </PlateAnalytics>
    <PlateAnalytics>
      <Key>Confidence Score</Key>
      <Score>1</Score>
    <Value>100</Value>
    </PlateAnalytics>
  </PlateAnalytics>
  <PlateImage/>
  <PlateRead>AA7D2</PlateRead>
  <SourceUrl>SHARPXS0014</SourceUrl>
  <Timestamp>2015-10-21T21:35:04.8627622+00:00</Timestamp>
</Plate>

Plate read event parameters

The following parameters are included in JSON and XML files that are exported to the HTTP server:

Parameter	Value type	Description
ContextCameraName	String	Name of the color context camera that generated the read event.
ContextImage	Binary	Color context image of the scene. Base64 encoded JPEG image.
Id	Guid	Unique identifier for the read event.
Latitude	Double	Decimal latitude of the Sharp camera.
Longitude	Double	Decimal longitude of the Sharp camera.
LprCameraName	String	Name of the license plate recognition camera that generated the read event.
PlateAnalytics	Array of analytics	Each analytic object is composed of a data triplet. This array is of variable size. The amount of analytic objects received depends on the Sharp camera’s configuration.
Key (analytic triplet)	String	Name of the analytic.
Score (analytic triplet)	Float (-1.0 or 1.0)	Indicates if the analytic value is reliable (1.0) or not (-1.0).
Value (analytic triplet)	String	Value of the analytic.
PlateImage	Binary	Black and white cropped license plate image. Base64 encoded JPEG image.
PlateRead	String	Detected license plate number.
SourceUrl	String	Unique name of the Sharp camera.
Timestamp	DateTime	Date and time of the read event (UTC) in the following format: yyyy-MM-ddTHH:mm:ss:fff.