get-label-detection

Description

Gets the label detection results of a Amazon Rekognition Video analysis started by StartLabelDetection .

The label detection operation is started by a call to StartLabelDetection which returns a job identifier (JobId ). When the label detection operation finishes, Amazon Rekognition publishes a completion status to the Amazon Simple Notification Service topic registered in the initial call to StartlabelDetection .

To get the results of the label detection operation, first check that the status value published to the Amazon SNS topic is SUCCEEDED . If so, call GetLabelDetection and pass the job identifier (JobId ) from the initial call to StartLabelDetection .

You can select how results are aggregated by using the AggregateBy input parameter. The default aggregation method is TIMESTAMPS . You can also aggregate by SEGMENTS , which aggregates all instances of labels detected in a given segment.

The returned Labels array may include the following attributes:

• Name - The name of the detected label.
• Confidence - The level of confidence in the label assigned to a detected object.
• Parents - The ancestor labels for a detected label. GetLabelDetection returns a hierarchical taxonomy of detected labels. For example, a detected car might be assigned the label car. The label car has two parent labels: Vehicle (its parent) and Transportation (its grandparent). The response includes the all ancestors for a label, where every ancestor is a unique label. In the previous example, Car, Vehicle, and Transportation are returned as unique labels in the response.
• Aliases - Possible Aliases for the label.
• Categories - The label categories that the detected label belongs to.
• BoundingBox — Bounding boxes are described for all instances of detected common object labels, returned in an array of Instance objects. An Instance object contains a BoundingBox object, describing the location of the label on the input image. It also includes the confidence for the accuracy of the detected bounding box.
• Timestamp - Time, in milliseconds from the start of the video, that the label was detected. For aggregation by SEGMENTS , the StartTimestampMillis , EndTimestampMillis , and DurationMillis structures are what define a segment. Although the “Timestamp” structure is still returned with each label, its value is set to be the same as StartTimestampMillis .

Timestamp and Bounding box information are returned for detected Instances, only if aggregation is done by TIMESTAMPS . If aggregating by SEGMENTS , information about detected instances isn’t returned.

The version of the label model used for the detection is also returned.

Use MaxResults parameter to limit the number of labels returned. If there are more results than specified in MaxResults , the value of NextToken in the operation response contains a pagination token for getting the next set of results. To get the next page of results, call GetlabelDetection and populate the NextToken request parameter with the token value returned from the previous call to GetLabelDetection .

If you are retrieving results while using the Amazon Simple Notification Service, note that you will receive an “ERROR” notification if the job encounters an issue.

See also: AWS API Documentation

Synopsis

  get-label-detection
--job-id <value>
[--max-results <value>]
[--next-token <value>]
[--sort-by <value>]
[--aggregate-by <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options

--job-id (string)

--max-results (integer)

--next-token (string)

--sort-by (string)

--aggregate-by (string)

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

Global Options

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination. If automatic pagination is disabled, the AWS CLI will only make one call, for the first page of results.

--output (string)

The formatting style for command output.

• json
• text
• table
• yaml
• yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

• on
• off
• auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

• base64
• raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.

Examples

To get the results of an objects and scenes detection operation

The following get-label-detection command displays the results of an objects and scenes detection operation that you started previously by calling start-label-detection.

aws rekognition get-label-detection  \
    --job-id 1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef

Output:

{
    "Labels": [
        {
            "Timestamp": 0,
            "Label": {
                "Instances": [],
                "Confidence": 50.19071578979492,
                "Parents": [
                    {
                        "Name": "Person"
                    },
                    {
                        "Name": "Crowd"
                    }
                ],
                "Name": "Audience"
            }
        },
        {
            "Timestamp": 0,
            "Label": {
                "Instances": [],
                "Confidence": 55.74115753173828,
                "Parents": [
                    {
                        "Name": "Room"
                    },
                    {
                        "Name": "Indoors"
                    },
                    {
                        "Name": "School"
                    }
                ],
                "Name": "Classroom"
            }
        }
    ],
    "JobStatus": "SUCCEEDED",
    "LabelModelVersion": "2.0",
    "VideoMetadata": {
        "Format": "QuickTime / MOV",
        "FrameRate": 29.970617294311523,
        "Codec": "h264",
        "DurationMillis": 6806,
        "FrameHeight": 1080,
        "FrameWidth": 1920
    },
    "NextToken": "BMugzAi4L72IERzQdbpyMQuEFBsjlo5W0Yx3mfG+sR9mm98E1/CpObenspRfs/5FBQFs4X7G"
}

For more information, see Detecting Labels in a Video in the Amazon Rekognition Developer Guide.

Output

JobStatus -> (string)

StatusMessage -> (string)

VideoMetadata -> (structure)

NextToken -> (string)

Labels -> (list)

LabelModelVersion -> (string)

JobId -> (string)

Video -> (structure)

JobTag -> (string)

GetRequestMetadata -> (structure)