Camera Util
===========
A collection of python threaded camera support routines for
- USB and laptop internal webcams
- RTSP streams
- MIPI CSI cameras (Raspberry Pi, Jetson Nano)
- FLIR blackfly USB camera
Save data as, HDF5, TIFF, AVI, MKV
Works on most platforms: Windows, MacOS, Unix
For detailed documentation please `Readme.md
<https://github.com/uutzinger/camera/blob/master/README.md>`_.
Example program using camera
----------------------------
.. code-block:: python
import cv2
import logging
import time
configs = {
'camera_res' : (1920, 1080), # CAP_PROP_FRAME_WIDTH, CAP_PROP_FRAME_HEIGHT
'exposure' : -6, # depends on camera: e.g. -5 =(2^-5)=1/32,
# 0=auto, 1...max=frame interval in microseconds
'autoexposure' : 3.0, # depends on camera: 0.25 or 0.75(auto), -1,0,1
'fps' : 30, # fps
'fourcc' : "MJPG", # cv2 camera only: MJPG, YUY2, YUYV
'buffersize' : -1, # default is 4 for V4L2, max 10,
'output_res' : (-1, -1), # output resolution (-1=no change)
'flip' : 0, # 0=no rotation
'displayfps' : 5 # frame rate for display server
}
if configs['displayfps'] >= configs['fps']: display_interval = 0
else: display_interval = 1.0/configs['displayfps']
# Open display window
cv2.namedWindow('Camera', cv2.WINDOW_AUTOSIZE) # or WINDOW_NORMAL
# Setting up logging
logging.basicConfig(level=logging.DEBUG) # options are: DEBUG, INFO, ERROR, WARNING
logger = logging.getLogger("Main")
# Setting up storage
from camera.streamer.mkvstorageserver import mkvServer
mkv = mkvServer("C:\\temp\\" + "Test.mkv", configs['fps'], configs['camera_res'])
mkv.start()
# Create camera interface
from camera.capture.cv2capture import cv2Capture
camera = cv2Capture(configs, 0)
camera.start()
stop = False
while(not stop):
current_time = time.time()
# Wait for new image
(frame_time, frame) = camera.capture.get(block=True, timeout=None)
# take care of camera log messages
while not camera.log.empty():
(level, msg)=camera.log.get_nowait()
logger.log(level, msg)
# Put image into storage queue
if not mkv.queue.full():
mkv.queue.put_nowait((frame_time, frame))
# take care of storage log messages
while not mkv.log.empty():
(level, msg)=mkv.log.get_nowait()
logger.log(level, msg)
# Display
if (current_time - last_display) >= display_interval:
cv2.imshow('Camera', frame)
if cv2.waitKey(1) & 0xFF == ord('q'): stop = True
if cv2.getWindowProperty('Camera', 0) < 0: stop = True
last_display = current_time
# Do other things
# Clean up
camera.stop()
mkv.stop()
cv2.destroyAllWindows()
