pyflink.multimodal.expression.ImageExpressionAccessor.hash

ImageExpressionAccessor.hash(*, method: str = 'phash', concurrency: Optional[int] = None) → pyflink.table.expression.Expression

Compute an image perceptual hash.

Equivalent to image_hash(). See that function for full parameter details.

Parameters

• method – Hash algorithm name.

• concurrency – Optional execution concurrency for this operation. None uses the framework default.

Returns

A DataFrame expression that produces a STRING perceptual hash.