FPrint.Image¶

Subclasses:: None

Methods¶

Inherited:: GObject.Object (37)
Structs:: GObject.ObjectClass (5)

class	`new` (width, height)
	`detect_minutiae` (cancellable, callback, *user_data)
	`detect_minutiae_finish` (result)
	`get_binarized` ()
	`get_data` ()
	`get_height` ()
	`get_minutiae` ()
	`get_ppmm` ()
	`get_width` ()

Virtual Methods¶

Inherited:: GObject.Object (7)

Properties¶

Name	Type	Flags	Short Description
`height`	`int`	r/w/co	The height of the image
`width`	`int`	r/w/co	The width of the image

Signals¶

Inherited:: GObject.Object (1)

Fields¶

Inherited:: GObject.Object (1)

Class Details¶

class FPrint.Image(**kwargs)¶

Bases:: GObject.Object
Abstract:: No
Structure:: FPrint.ImageClass

classmethod new(width, height)¶

Parameters:

width (int) –
height (int) –

Return type:

FPrint.Image

detect_minutiae(cancellable, callback, *user_data)¶

Parameters:

cancellable (Gio.Cancellable or None) – a Gio.Cancellable, or None
callback (Gio.AsyncReadyCallback or None) – the function to call on completion
user_data (object or None) – the data to pass to callback

Detects the minutiae found in an image.

detect_minutiae_finish(result)¶

Parameters:: result (Gio.AsyncResult) – A Gio.AsyncResult
Raises:: GLib.Error
Returns:: True on success
Return type:: bool

Finish minutiae detection in an image

get_binarized()¶

Returns:: The binarized image data
Return type:: bytes

Gets the binarized data for an image. This data must not be modified or freed. You need to first detect the minutiae using FPrint.Image.detect_minutiae().

get_data()¶

Returns:: The image data
Return type:: bytes

Gets the greyscale data for an image. This data must not be modified or freed.

get_height()¶

Returns:: the height of the image
Return type:: int

Gets the pixel height of an image.

get_minutiae()¶

Returns:: The detected minutiae
Return type:: [FPrint.Minutia]

Gets the minutiae for an image. This data must not be modified or freed. You need to first detect the minutiae using FPrint.Image.detect_minutiae().

get_ppmm()¶

Returns:: the resolution of the image in points per millimeter
Return type:: float

Gets the resolution of the image. Note that this is assumed to be fixed to 500 points per inch (~19.685 p/mm) for most drivers.

get_width()¶

Returns:: the width of the image
Return type:: int

Gets the pixel width of an image.

Property Details¶

FPrint.Image.props.height¶

Name:: height
Type:: int
Default Value:: 0
Flags:: READABLE, WRITABLE, CONSTRUCT_ONLY

The height of the image

FPrint.Image.props.width¶

Name:: width
Type:: int
Default Value:: 0
Flags:: READABLE, WRITABLE, CONSTRUCT_ONLY

The width of the image