Media Server 25.4
Media Server Help

# Image Embedding

An embedding is a numerical representation of an image - a vector that you can index into your Content component. The Content component can compare embeddings to other embeddings, to see whether two images are conceptually similar.

An image embedding encoder is a model that is used to generate an embedding. Before running this task, import an encoder into your training database by using the action ImportImageEmbeddingEncoder.

Sometimes pairs of encoders are trained simultaneously, one to generate vectors from images and another to generate vectors from text. In this case, you can use the Content component to search for images that are conceptually similar to keywords.

Configuration Parameter | Description
--- | ---
Encoder | The encoder to use to generate image embeddings.
EmbeddingPrecision | The number of decimal places to use when writing embeddings into the output.
GPUDeviceID | The device ID of the GPU to use.
Input | The image track to process.
Region | A region of the image or video to restrict analysis to.
SampleInterval | The interval at which frames are selected to be analyzed.
SegmentDuration | The maximum duration of a record in the `SegmentedResult` track.
SyncDatabase | Specifies whether to synchronize with the training database before beginning the analysis task.
Type | The analysis engine to use. Set this parameter to `ImageEmbedding`.

## Output Tracks

Output track | Description
--- | ---
`Data` | Contains a record, with an embedding, for each processed image or video frame.
`Result` | Records in the result track contain vectors that are the numerical average of the embeddings that exist, for the same timeframe, in the `Data` track. When the input track does not identify specific objects, a single result record is generated for the entire video. When the input track identifies specific events (for example object class recognition results), the result record timestamps match the times of those events. In this case you should usually set `Region=Input` so that embeddings are generated for identified regions, and not from entire video frames.
`SegmentedResult` | (Available only when processing video). The same as the `Result` track, except the duration of each record is limited by the parameter SegmentDuration. If a result exceeds the specified duration, Media Server begins a new record with the same ID.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Media Server 25.4

Topic Title: Image Embedding