Platypush documentation

camera.ir.mlx90640

camera.ir.mlx90640

class platypush.plugins.camera.ir.mlx90640.CameraIrMlx90640Plugin(rawrgb_path: Optional[str] = None, resolution: Tuple[int, int] = (32, 24), warmup_frames: Optional[int] = 5, **kwargs)[source]

Bases: CameraPlugin

Plugin to interact with a ML90640 infrared thermal camera.

In order to use this plugin you’ll need to download and compile the mlx90640 C++ bindings and examples for the device. Instructions on Raspbian:

# Install the dependencies
$ [sudo] apt-get install libi2c-dev
$ cd $PLATYPUSH_SRC_DIR
$ git submodule init
$ git submodule update
$ cd platypush/plugins/camera/ir/mlx90640/lib
$ make clean
$ make bcm2835
$ make examples/rawrgb I2C_MODE=LINUX

Requires:

  • mlx90640-library installation (see instructions above)

  • PIL image library (pip install Pillow)

__init__(rawrgb_path: Optional[str] = None, resolution: Tuple[int, int] = (32, 24), warmup_frames: Optional[int] = 5, **kwargs)[source]
Parameters:

  • rawrgb_path – Specify it if the rawrgb executable compiled from https://github.com/pimoroni/mlx90640-library is in another folder than <directory of this file>/lib/examples.

  • resolution – Device resolution (default: 32x24).

  • warmup_frames – Number of frames to be skipped on sensor initialization/warmup (default: 2).

  • kwargs – Extra parameters to be passed to platypush.plugins.camera.CameraPlugin.

capture(output_file=None, *args, **kwargs)[source]

Back-compatibility alias for capture_image().

capture_frame(device: Camera, *args, **kwargs)[source]

Capture a frame from a device using the plugin-specific logic - to be implemented by the derived classes.

Parameters:

device – An initialized platypush.plugins.camera.Camera object.

prepare_device(device: Camera)[source]

Prepare a device using the plugin-specific logic - to be implemented by the derived classes.

Parameters:

device – An initialized platypush.plugins.camera.Camera object.

release_device(device: Camera)[source]

Release a device using the plugin-specific logic - to be implemented by the derived classes.

Parameters:

device – An initialized platypush.plugins.camera.Camera object.

to_grayscale(image)[source]

Convert a frame to grayscale. The default implementation assumes that frame is a PIL.Image object.

Parameters:

frame – Image frame (default: a PIL.Image object).

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