Added MLX90640 infrared camera plugin

keep-around/f2b3000922f92e1b805579c66c389c68d13f29ef
Fabio Manganiello 3 years ago
parent d96a218c56
commit d1d842ae95
  1. 3
      .gitmodules
  2. 0
      platypush/plugins/camera/ir/__init__.py
  3. 86
      platypush/plugins/camera/ir/mlx90640/__init__.py
  4. 1
      platypush/plugins/camera/ir/mlx90640/lib

3
.gitmodules vendored

@ -7,3 +7,6 @@
[submodule "platypush/backend/http/static/flag-icons"]
path = platypush/backend/http/static/flag-icons
url = https://github.com/BlackLight/flag-icon-css.git
[submodule "platypush/plugins/gpio/sensor/ir/mlx90640/lib"]
path = platypush/plugins/camera/ir/mlx90640/lib
url = https://github.com/pimoroni/mlx90640-library

@ -0,0 +1,86 @@
import os
import subprocess
import time
from platypush.plugins import Plugin, action
class CameraIrMlx90640Plugin(Plugin):
"""
Plugin to interact with a `ML90640 <https://shop.pimoroni.com/products/mlx90640-thermal-camera-breakout>`_
infrared thermal camera.
In order to use this plugin you'll need to download and compile the
`mlx90640 <https://github.com/pimoroni/mlx90640-library>`_ 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
"""
_img_size = (24, 32)
def __init__(self, fps=16, skip_frames=2, scale_factor=10, rawrgb_path=None, **kwargs):
"""
:param fps: Frames per seconds (default: 16)
:param skip_frames: Number of frames to be skipped on sensor initialization/warmup (default: 2)
:param scale_factor: The camera outputs 24x32 pixels artifacts. Use scale_factor to scale them up to a larger image (default: 10)
:param 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`.
"""
super().__init__(**kwargs)
if not rawrgb_path:
rawrgb_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'lib', 'examples', 'rawrgb')
assert fps > 0
assert skip_frames >= 0
assert os.path.isfile(rawrgb_path)
self.fps = fps
self.skip_frames = skip_frames
self.scale_factor = scale_factor
self.rawrgb_path = rawrgb_path
@action
def capture(self, frames=1, skip_frames=None):
"""
Capture one or multiple frames and return them as raw RGB
:param frames: Number of frames to be captured (default: 1)
:param skip_frames: If set it overrides the skip_frames parameter specified on the object (default: None)
"""
if skip_frames is None:
skip_frames = self.skip_frames
input_size = self._img_size[0] * self._img_size[1] * 3
sleep_time = 1.0 / self.fps
captured_frames = []
with subprocess.Popen([self.rawrgb_path, '{}'.format(self.fps)], stdin=subprocess.PIPE, stdout=subprocess.PIPE,
stderr=subprocess.PIPE) as camera:
while len(captured_frames) < frames:
frame = camera.stdout.read(input_size)
size = len(frame)
if skip_frames > 0:
time.sleep(sleep_time)
skip_frames -= 1
continue
captured_frames.append(frame)
return frames
# vim:sw=4:ts=4:et:

@ -0,0 +1 @@
Subproject commit f4549dc6cc416f8db05a8bfd1d4850aee5e7af75
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