mxpi_facealignment

Function	Object alignment plugin, which can be used to align detected object images. It inputs the object image to be aligned and its key point information, and then outputs the aligned object image.
Synchronous/Asynchronous (Status)	Synchronous
Constraints	Input port 0 is used to receive object image data. Input port 1 is used to receive key object point data.
Plugin Base Class (Factory)	mxpi_facealignment
Input/Output	Input: buffer (data type: MxpiBuffer) Output: buffer (data type: MxpiBuffer)
Property	For details, see Table 1.

**Table 1** mxpi_facealignment plugin properties
Property Name	Description	Mandatory or Not	Modifiable or Not
deviceId	Ascend AI Processor ID, which is specified by the deviceId property in the stream_config field. You do not need to set the ID.	No	Yes
dataSourceImage	Index of the object image input data. The default value is the key value of the output port of the upstream plugin.	No	Yes
dataSourceKeyPoint	Index of the key point input data. The default value is the key value of the output port of the upstream plugin.	No	Yes
afterFaceAlignmentHeight	Image height after object alignment. The default value is 112, and the value range is [32, 8192].	No	Yes
afterFaceAlignmentWidth	Image width after object alignment. The default value is 112, and the value range is [32, 8192].	No	Yes

Ensure that the properties of afterFaceAlignmentHeight and afterFaceAlignmentWidth are consistent with the metadata of the input image. Otherwise, the alignment result fails to be obtained due to inconsistent parameters. In addition, OpenCV requires that the height and width be multiples of 2.

Parent topic: Intelligent Video Analysis (IVA) Plugins