GraphQL Queries

We provide a list of sample GraphQL queries that might be usefull for your integration as they mostly come from real world deployments we realized in the past.

Get faces with matches#

In order to get all faces with match information with a particular time range use following query:

query GetAllFacesWithMatches(
  $take: Int
  $skip: Int
  $from: DateTime!
  $to: DateTime!
) {
  faces(
    take: $take
    skip: $skip
    order: { createdAt: ASC }
    where: {
      and: [
        { createdAt: { gte: $from } }
        { createdAt: { lte: $to } }
        { matchResults: { any: true } }
      ]
    }
  ) {
    items {
      id
      createdAt
      imageDataId
      matchResults {
        watchlistMemberId
        watchlistMemberFullName
      }
      tracklet {
        id
      }
      frame {
        id
        imageDataId
      }
      cropLeftTopX
      cropLeftTopY
      cropRightTopX
      cropRightTopY
      cropLeftBottomX
      cropLeftBottomY
      cropRightBottomX
      cropRightBottomY
    }
  }
}

Get pedestrians wearing a long sleeve#

query pedestriansWithLongSleeve () {
  pedestrians(
    where: {
      objectAttributes: {
        some: {
          type: { 
            in: [LONG_SLEEVE] 
          } 
        }
      }
    }    
  ){
    items {
      id
      objectAttributes {
         type
         floatValue
         boolValue
      }
    } 
  
  }
}

Build a complex pedestrians query#

Query adult male pedestrians wearing long sleeve, glasses and having a backpack.

query pedestriansFiltered {
  pedestrians(
    where: {
      and: [
        { objectAttributes: { some: { type: { in: [LONG_SLEEVE] } } } },
        { objectAttributes: { some: { type: { in: [GLASSES] } } } },
        { objectAttributes: { some: { type: { in: [IS_ADULT] } } } },
        { objectAttributes: { some: { type: { in: [IS_MALE] } } } },
        { objectAttributes: { some: { type: { in: [BACKPACK] } } } }
      ]
    }
  ) {
    items {
      id
      objectAttributes {
        type
        floatValue
        boolValue
      }
    }
  }
}

Search using an image#

To search in the history of all detected faces using a particular image (of a suspect, for example) we must use two separate queries. First query is using REST API in order to initialize search. Second query then retrieves a results.

Start search#

  POST   to http://your-smartface-ip:8098/api/v1/Faces/Search with a base64 serialized image:

{
	"image": {
		"data": "/9j/4AAQSkZJRgABAQEAYABgAAD/4
        ....
        +HtO1XVm8RnUdK2W2qC/u9SjNhqN/JF/ouop52Q=="
	},
	"threshold": 50,
	"maxResultCount": 1
}

and you will get a Search Session ID in a response

{
	"searchSessionId": "3f21a452-eb05-4f6a-a692-e77931c1cfba"
}

Query for search results#

Use following GraphQL query

query searchByImageResults {
  faces(
    where: {
      searchSessionObjects: {
        some: { searchSessionId: { eq: "3f21a452-eb05-4f6a-a692-e77931c1cfba" } }
      }
    }
  ) {
    items {
      searchSessionObjects {
        score
        searchSessionId
      }
      createdAt
      quality
      matchResults {
        score
      }
      age
      faceArea
      faceAreaChange
      id
      imageDataId
      frame {
        id
        imageDataId
        stream {
          id
          name
        }
      }
    }
    totalCount
  }
}