mxpi_class2osdinstances

Function	Converts classification results to drawing units. For example, convert MxpiClassList to MxpiOsdInstancesList for OSD drawing. MxpiVisionList provides the coordinate information of the submap. If the dynamic port is not used, MxpiVisionList is directly obtained from the buffer.
Synchronous/Asynchronous	Synchronous
Constraints	-
Plugin Base Class (Factory)	mxpi_class2osdinstances
Input/Output	Input: buffer (data type: MxpiBuffer) and metadata (data type: MxpiClassList) buffer (data type: MxpiBuffer) and metadata (data type: MxpiVisionList) Output: buffer (data type: MxpiBuffer) and metadata (data type: MxpiOsdInstancesList)
Port Format (Caps)	Static input: {"metadata/class"}; dynamic input: {"image/yuv"} Static output: {"metadata/osd"}
Property	For details, see Table 1.

**Table 1** mxpi_class2osdinstances plugin properties
Property Name	Description	Mandatory or Not	Modifiable or Not
dataSourceClass	Index name of the classification result. The default value is the key of the metadata mounted to the output port of the upstream plugin.	No	Yes
dataSourceImage	Index name of the image. The default value is the key of the metadata mounted to the output port of the upstream plugin.	No	Yes
topK	Top K classes to be displayed. The value ranges from 0 to 100. The default value is 1.	No	Yes
position	Position of the classification result text in the image. The options are as follows. The default value is LEFT_TOP_IN. LEFT_TOP_OUT: outside of the upper left corner of the image LEFT_TOP_IN: interior of the upper left corner of the image LEFT_BOTTOM_IN: interior of the lower left corner of the image RIGHT_TOP_IN: interior of the upper right corner of the image RIGHT_BOTTOM_IN: interior of the lower right corner of the image	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 ranges from 0.0 to 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
createRect	Whether to create a rectangle boundary for the classification result text. The options are 0 (no) and 1 (yes). The default value is 1.	No	Yes
colorMap	Rectangle boundary color: "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 rectangle boundary. The default value is 1. The value is an integer ranging from 1 to 100. When this parameter is set to -1, this rectangle is filled with a color.	No	Yes
rectLineType	Line type of the rectangle boundary. 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 Yes

Pipeline sample:

"mxpi_class2osdinstances0":{
    "props":{
 "colorMap":"100,100,100|200,200,200|0,128,255|255,128,0",
 "fontFace":"1",
 "fontScale":"0.8",
 "fontThickness":"1",
 "fontLineType":"8",
 "rectThickness":"2",
 "rectLineType":"8",
 "position":"LEFT_TOP_IN",
 "topK":"3",
 "createRect":"1"
    },
    "factory":"mxpi_class2osdinstances",
    "next":"tee1"
},

Parent topic: OSD Plugins