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Version: v24.05

Retrieve Frame Count

In this tutorial, we learn how to get frame count from camera with ion-kit.

Prerequisite​

  • ionpy
  • numpy
  • OpenCV
pip3 install -U pip
pip3 install opencv-python
pip3 install numpy
pip3 install ion-python==1.8.10

Tutorial​

The process of setting up the pipeline is the exactly same as the one in the previous tutorials. We just need to set up an additional output port and buffer to obtain frame count from the BB.

Get frame count​

While displaying image, we also want to retrieve the frame count information. The only difference from previous tutorials is that we need to bind the frame count value to a new port.

fcdatas = []
frame_counts = []
for i in range(num_device):
    fcdatas.append(np.zeros(1, dtype=np.uint32))
    frame_counts.append(Buffer(array=fcdatas[i]))

Execute the pipeline​

Execute builder.run() to finish the pipeline.

Since frame counts are directory stored to numpy array fcdata, you can print each framecount for ith sensor as follows:

print(fcdatas[i][0], end=" ")
info

The latest SDK's API returns the output framecount as an array whose length corresponds to the number of devices, with each element being a Halide Buffer. [0] contains the value of framecount. In contrast, version 24.01.04 returns the output of framecount as a single Halide Buffer, with a length equal to the number of devices.

Complete code​

Complete code used in the tutorial is here.