camera_remote_ws

A Web API to interact with the Raspberry Pi camera module.

This project stands up a simple HTTP server built on Tornado with Python. Communication with the Raspberry Pi Camera Module is performed using the picamera Python module.

I'm currently working with a Raspberry Pi V3 from CanaKit and the PI NoIR Camera V2.1 (https://www.raspberrypi.org/products/pi-noir-camera-v2/). The code it written for Python 2.7 and utilizes the Pillow, Numpy, picamera, & Tornado packages.

Goals:

• Support the features of the camera module via the API

  Full (as reasonable) support of the picamera module

• Dynamic image processing pipelines

  Stacking, Drizzle, sharpening, etc

• Build Quick and Simple front-end UI

  Simple jQuery+Bootstrap UI

• Build advanced front-end user interface

  More advanced React-Redux UI

• Image persistance & recall

  Database storage/retrieval of image and exposure metadata.

• Streaming Video

  Direct from camera

• Telescope control

• Dynamic astrophotography algorithms/programmable observation sequences

Endpoints

/still

Captures a still image from the camera

Parameters

parameter	type	values (example)	description	default
iso	integer	0-800	Capture ISO
ss	integer	0-10000000	Shutter speed (microseconds)
hres	integer	1-3264	Horizontal image size	3264
vres	integer	1-2464	Vertical image size	2464
ex	string		Exposure Mode
channel	char	r|g|b	Color channel
grey	boolean	true|false	Force greyscale	false
md	integer	1-...	Sensor Mode (see Raspiberry Pi Camera Module Docs)	0
text	string		Image annotation text
textsize	integer	1-...	Annotation text size	16
textcolor	string	white|black|etc	Annotation text color	white
time_format	string	%c	Time format (python strftime)	%Y-%m-%d %H:%M:%S
vflip	boolean	true|false	Flip the image vertically	false
hflip	boolean	true|false	Flip the image horizontally	false
st	integer	0-...	Seconds to allow auto gain to settle out	0
wait	boolean	true|false	Waits for camera resource to become available	true

Example

Request a 1920x1080 image with ISO set to 800, exposure time of 5000 microseconds, and annotated at the top left.

http://localhost:9090/still?iso=800&ss=5000&hres=1920&vres=1080&text=ISO: {iso}, Shutter Speed: {ss}, Time: {time}

/stream

Streams video directly from the camera

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