mxpi_object2osdinstances

Function	Converts bounding boxes to drawing units. For example, it can convert MxpiObjectList to MxpiOsdInstancesList for OSD drawing.
Synchronous/Asynchronous (Status)	Asynchronous
Constraints	-
Plugin Base Class (Factory)	mxpi_object2osdinstances
Input/Output	Input: buffer (data type: MxpiBuffer), metadata (data type: MxpiObjectList) Output: buffer (data type: MxpiBuffer), metadata (data type: MxpiOsdInstancesList)
Port Format (Caps)	Static input: {"metadata/object"} Static output: {"metadata/osd"}
Property	For details, see Table 1.

**Table 1** mxpi_object2osdInstances plugin properties
Property Name	Description	Mandatory or Not	Modifiable or Not
dataSource	Index name of the input data. The default value is the key of the metadata corresponding to the output port of the upstream plugin.	No	Yes
colorMap	Colors for object classes: "R1,G1,B1\|R2,G2,B2\|R3,G3,B3\|...". Configuration example: 255,255,255\|0,0,0\|128,128,128. If the class ID is greater than the number of configured colors, the last color is used. If this property is not set, the default color table is used.	No	Yes
rectThickness	Width of the bounding box. The default value is 1. The value is an integer ranging from 0 to 100.	No	Yes
rectLineType	Line type of the bounding box. The value corresponds to the enumerated value of the OpenCV line type and is the same as that of fontLineType. For details, see Table 2.	No	Yes
fontFace	Font type. The value corresponds to the enumerated value of the OpenCV font type. For details, see Table 2.	No	Yes
fontScale	Font size. The default value is 1.0. The value is of the double type that falls within the range of [0.0, 100.0].	No	Yes
fontThickness	Font width. The default value is 1. The value is an integer ranging from 1 to 100.	No	Yes
fontLineType	Line type of the font. The value corresponds to the enumerated value of the OpenCV line type. For details, see Table 2.	No	Yes
createText	Whether to display the classification result text of the object detection model. The value is of the Boolean type. The options are 0 (no) and 1 (yes). The default value is 1.	No	Yes

**Table 2** Description of pipeline properties
Property Name	Description	Value
fontFace	FONT_HERSHEY_SIMPLEX (normal-size sans serif)	0 (default)
	FONT_HERSHEY_PLAIN (small-size sans serif)	1
	FONT_HERSHEY_DUPLEX (normal-size sans serif, more complex than FONT_HERSHEY_SIMPLEX)	2
	FONT_HERSHEY_COMPLEX (normal-size serif)	3
	FONT_HERSHEY_TRIPLEX (normal-size serif, more complex than FONT_HERSHEY_COMPLEX)	4
	FONT_HERSHEY_COMPLEX_SMALL (smaller version of the normal-size serif)	5
	FONT_HERSHEY_SCRIPT_SIMPLEX (handwritten font)	6
	FONT_HERSHEY_SCRIPT_COMPLEX (a more complex variant of FONT_HERSHEY_SCRIPT_SIMPLEX).	7
	FONT_ITALIC (italic font)	16
fontLineType	LINE_4 (four connected lines)	4
	LINE_8 (eight connected lines)	8 (default)
	LINE_AA (anti-aliasing line)	16

Pipeline sample:

"mxpi_object2osdinstances0":{
    "props":{
  "colorMap":"100,100,100|200,200,200|0,128,255|255,128,0",
  "fontFace":"16",
  "fontScale":"0.5",
  "fontThickness":"2",
  "fontLineType":"16",
  "rectThickness":"2",
  "rectLineType":"16"
    },
    "factory":"mxpi_object2osdinstances",
    "next":"queue5"
},

Parent topic: On-Screen Display (OSD) Plugins