This application is branched from pymba, a python wrapper for the Vimba DLL. To use this MJPEG server install pymba using the below instructions, enter the vimba-streamer directory, and run ./run.sh to start the server. Then you can open the stream-client.html page to test the MJPEG server. To view the stream on another member of the local network copy the stream-client.html page to the other computer, and replace localhost in <img src="http://localhost:80/cgi-bin/encoder?&GET_STREAM"> with the ip address of the server.
setuptools 18.0.1 or greater.
Download from the bottom of https://pypi.python.org/pypi/setuptools#downloads
Enter the setuptools directory and run:
sudo python ez_setup.py build;sudo python ez_setup.py install
Python OpenCV, Numpy, and Scipy sudo apt-get install python-scipy python-numpy python-opencv
pymba is a Python wrapper for the Allied Vision Technologies (AVT) Vimba C API. It wraps the VimbaC.dll file included in the AVT Vimba installation to provide a simple Python interface for AVT cameras. It currently supports most of the functionality provided by VimbaC.dll.
Install the Vimba SDK from AVT to the default directory.
Run the AVTDriverInstaller tool and install the AVT Vimba SDK drivers.
Install pymba.
If Vimba and pymba are installed correctly, then the following code examples should give the installed Vimba version. No camera is needed.
Checking the version using a context manager:
from pymba import *
with Vimba() as vimba:
print vimba.getVersion()
Or without using a context manager:
from pymba import *
vimba = Vimba()
vimba.startup()
print vimba.getVersion()
vimba.shutdown()
Discover, open, manipulate, and capture frames from a camera.
from pymba import *
import time
# start Vimba
with Vimba() as vimba:
# get system object
system = vimba.getSystem()
# list available cameras (after enabling discovery for GigE cameras)
if system.GeVTLIsPresent:
system.runFeatureCommand("GeVDiscoveryAllOnce")
time.sleep(0.2)
cameraIds = vimba.getCameraIds()
for cameraId in cameraIds:
print 'Camera ID:', cameraId
# get and open a camera
camera0 = vimba.getCamera(cameraIds[0])
camera0.openCamera()
# list camera features
cameraFeatureNames = camera0.getFeatureNames()
for name in cameraFeatureNames:
print 'Camera feature:', name
# get the value of a feature
print camera0.AcquisitionMode
# set the value of a feature
camera0.AcquisitionMode = 'SingleFrame'
# create new frames for the camera
frame0 = camera0.getFrame() # creates a frame
frame1 = camera0.getFrame() # creates a second frame
# announce frame
frame0.announceFrame()
# capture a camera image
camera0.startCapture()
frame0.queueFrameCapture()
camera0.runFeatureCommand('AcquisitionStart')
camera0.runFeatureCommand('AcquisitionStop')
frame0.waitFrameCapture()
# get image data...
imgData = frame0.getBufferByteData()
# ...or use NumPy for fast image display (for use with OpenCV, etc)
import numpy as np
moreUsefulImgData = np.ndarray(buffer = frame0.getBufferByteData(),
dtype = np.uint8,
shape = (frame0.height,
frame0.width,
1))
# clean up after capture
camera0.endCapture()
camera0.revokeAllFrames()
# close camera
Get a reference to the Vimba system object and list available system features.
from pymba import *
with Vimba() as vimba:
# get system object
system = vimba.getSystem()
# list system features
for featureName in system.getFeatureNames():
print 'System feature:', featureName
Get a reference to an interface object and list available interface features.
from pymba import *
with Vimba() as vimba:
# get list of available interfaces
interfaceIds = vimba.getInterfaceIds()
for interfaceId in interfaceIds:
print 'Interface ID:', interfaceId
# get interface object and open it
interface0 = vimba.getInterface(interfaceIds[0])
interface0.openInterface()
# list interface features
interfaceFeatureNames = interface0.getFeatureNames()
for name in interfaceFeatureNames:
print 'Interface feature:', name
# close interface
interface0.closeInterface()
from pymba import *
try:
with Vimba() as vimba:
except VimbaException as e:
print e.message
- Not all API functions are wrapped (most are). For full list see vimbadll.py.
- The path to VimbaC.dll has been hardcoded in vimbadll.py. It should be easy to change if needed.