HomeCloudSoftwareHardware
DepthAI Components
DepthAI Tutorials
DepthAI Perception
Tools
ROS
Neural Networks
DepthAI API References

ON THIS PAGE

  • Cast
  • Node properties
  • How to place it
  • Inputs and Outputs
  • Usage
  • Examples of functionality
  • Reference

Cast

Cast Node is used to convert NNData messages to ImgFrame. This is useful in cases where applications need to use outputs from a NeuralNetwork node to be fed into nodes that only accept ImgFrame.

Node properties

  • outputFrameType - The type of the output frame. The type should be the same as the NN output frame type.
  • offset - The offset to be applied to the output frame. Default is 0.
  • scale - The scale factor to be applied to the output frame. Default is 1.
Offset and scale are used to define a linear transformation of the pixel values. The formula is output = input * scale + offset.

How to place it

Python
C++

Python

Python
1pipeline = dai.Pipeline()
2cast = pipeline.create(dai.node.Cast)

Inputs and Outputs

React Flow

Usage

Python
C++

Python

Python
1pipeline = dai.Pipeline()
2
3nn = pipeline.create(dai.node.NeuralNetwork)
4# Load a custom blob
5nn.setBlobPath("path_to_blob")
6
7cast = pipeline.create(dai.node.Cast)
8cast.setOutputFrameType(dai.ImgFrame.Type.BGR888p)
9cast.setScale(1)
10
11# Link the output of NN to the input of Cast
12nn.out.link(cast.input)
13
14# Send the casted output to a host via XLink
15xout = pipeline.create(dai.node.XLinkOut)
16xout.setStreamName("castOut")
17cast.output.link(xout.input)

Examples of functionality

Reference

class

depthai.node.Cast(depthai.Node)

method
setNumFramesPool(self, arg0: int) -> Cast: Cast
Set number of frames in pool  Parameter ``numFramesPool``:     Number of frames in pool
method
setOffset(self, arg0: float) -> Cast: Cast
Set offset  Parameter ``offset``:     Offset
method
setOutputFrameType(self, arg0: depthai.RawImgFrame.Type) -> Cast: Cast
Set output frame type  Parameter ``outputType``:     Output frame type
method
setScale(self, arg0: float) -> Cast: Cast
Set scale  Parameter ``scale``:     Scale
property
input
Input NNData or ImgFrame message.
property
output
Output ImgFrame message.
property
passthroughInput
Passthrough input message.

Need assistance?

Head over to Discussion Forum for technical support or any other questions you might have.