_ImageSchema¶

class pyspark.ml.image._ImageSchema[source]¶

Internal class for pyspark.ml.image.ImageSchema attribute. Meant to be private and not to be instantized. Use pyspark.ml.image.ImageSchema attribute to access the APIs of this class.

Methods

`toImage`(array[, origin])	Converts an array with metadata to a two-dimensional image.
`toNDArray`(image)	Converts an image to an array with metadata.

Attributes

`columnSchema`	Returns the schema for the image column.
`imageFields`	Returns field names of image columns.
`imageSchema`	Returns the image schema.
`ocvTypes`	Returns the OpenCV type mapping supported.
`undefinedImageType`	Returns the name of undefined image type for the invalid image.

Methods Documentation

toImage(array: numpy.ndarray, origin: str = '') → pyspark.sql.types.Row[source]¶

Converts an array with metadata to a two-dimensional image.

Parameters

arraynumpy.ndarray: The array to convert to image.
originstr: Path to the image, optional.

Returns

Row: that is a two dimensional image.

New in version 2.3.0: ..

toNDArray(image: pyspark.sql.types.Row) → numpy.ndarray[source]¶

Converts an image to an array with metadata.

Parameters

imageRow: image: A row that contains the image to be converted. It should have the attributes specified in ImageSchema.imageSchema.

Returns

numpy.ndarray: that is an image.

New in version 2.3.0: ..

Attributes Documentation

columnSchema¶

Returns the schema for the image column.

Returns

StructType: a schema for image column, struct<origin:string, height:int, width:int, nChannels:int, mode:int, data:binary>.

New in version 2.4.0: ..

imageFields¶

Returns field names of image columns.

Returns

list: a list of field names.

New in version 2.3.0: ..

imageSchema¶

Returns the image schema.

Returns

StructType: with a single column of images named “image” (nullable) and having the same type returned by columnSchema().

New in version 2.3.0: ..

ocvTypes¶

Returns the OpenCV type mapping supported.

Returns

dict: a dictionary containing the OpenCV type mapping supported.

New in version 2.3.0: ..

undefinedImageType¶: Returns the name of undefined image type for the invalid image.

New in version 2.3.0.

ImageSchema

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