Last frame acquisition from camera

[James2ok]

Description

Hi , i try to use the classify_capture.py script in the example to take the Last frame from my usb camera , open a display and run a tflite classification model retrained by me. My problem is that the frame that i take from camera is not the Last frame . Someone can share some code or funcion to take the Last frame from camera? Thanks

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Issue Type

Support

Operating System

Mendel Linux

Coral Device

Dev Board

Other Devices

No response

Programming Language

Python 3.8

Relevant Log Output

No response

[myungjoo]

With GStreamer, running v4l2src ! ... (preprocess) ... ! queue leaky=2 max-size-buffers=2 ! {element that does the inference}, older frames will be dropped at queue so that the last element will get the latest frames.

E.g., https://github.com/nnstreamer/nnstreamer-example/blob/main/bash_script/example_object_detection_tensorflow_lite/gst-launch-object-detection-tflite.sh (this supports Google Coral accleration if the correponsing tensorflow-lite is built properly and accelerator is properly designated.