Image, Audio, and Video Extenders Administration and Programming
When you query images by content, you identify input for the query and a
target set of cataloged images. The input for the query specifies the
name of the features to be used in the query, feature values, and feature
weights (that is, emphasis to be placed on each feature).
You have two ways to provide this input:
- Specify a query string in your query. The query string is a
character string that specifies the features, feature values, and feature
weights for the query.
- Create a query object and refer to it in your query. The query
object specifies features and feature weights. It also identifies a
data source for each feature. The data source provides the value for
each feature.
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