I have been stragling to make it work for two cameras ... but the second window comes up BLACK. Any suggestions ?
I appreciate the time you spent on this. I have attach my code (actually its a dublicate of yours )
from ctypes import c_int, c_void_p, c_char_p, c_float, c_uint16, c_uint32, c_uint8
from ctypes import Structure, byref
import ctypes
# camera sensor parameters
CLEYE_AUTO_GAIN = 0 #[false, true]
CLEYE_GAIN = 1 #[0, 79]
CLEYE_AUTO_EXPOSURE = 2 #[false, true]
CLEYE_EXPOSURE = 3#[0, 511]
CLEYE_AUTO_WHITEBALANCE = 4 #[false, true]
CLEYE_WHITEBALANCE_RED = 5#[0, 255]
CLEYE_WHITEBALANCE_GREEN = 6#[0, 255]
CLEYE_WHITEBALANCE_BLUE = 7#[0, 255]
# camera linear transform parameters
CLEYE_HFLIP = 8#[false, true]
CLEYE_VFLIP = 9#[false, true]
CLEYE_HKEYSTONE = 10#[-500, 500]
CLEYE_VKEYSTONE = 11#[-500, 500]
CLEYE_XOFFSET = 12#[-500, 500]
CLEYE_YOFFSET = 13#[-500, 500]
CLEYE_ROTATION = 14#[-500, 500]
CLEYE_ZOOM = 15#[-500, 500]
# camera non-linear transform parameters
CLEYE_LENSCORRECTION1 = 16#[-500, 500]
CLEYE_LENSCORRECTION2 = 17#[-500, 500]
CLEYE_LENSCORRECTION3 = 18#[-500, 500]
CLEYE_LENSBRIGHTNESS = 19#[-500, 500]
#CLEyeCameraColorMode
CLEYE_MONO_PROCESSED = 0
CLEYE_COLOR_PROCESSED = 1
CLEYE_MONO_RAW = 2
CLEYE_COLOR_RAW = 3
CLEYE_BAYER_RAW = 4
#CLEyeCameraResolution
CLEYE_QVGA = 0
CLEYE_VGA = 1
class GUID(Structure):
_fields_ = [(“Data1”, c_uint32),
(“Data2”, c_uint16),
(“Data3”, c_uint16),
(“Data4”, ctypes.c_uint8 * 8)]
def __str__(self):
return “%X-%X-%X-%s” % (self.Data1, self.Data2, self.Data3, ‘’.join(‘X’%x for x in self.Data4))
lib = “CLEyeMulticam.dll”
dll = ctypes.cdll.LoadLibrary(lib)
dll.CLEyeGetCameraUUID.restype = GUID
dll.CLEyeCameraGetFrame.argtypes = [c_void_p, c_char_p, c_int]
dll.CLEyeCreateCamera.argtypes = [GUID, c_int, c_int, c_float]
def CLEyeGetCameraCount():
return dll.CLEyeGetCameraCount()
def CLEyeCameraGetFrameDimensions(cam):
width = c_int()
height = c_int()
dll.CLEyeCameraGetFrameDimensions(cam, byref(width), byref(height))
return width.value, height.value
def CLEyeGetCameraParameter(cam, param):
return dll.CLEyeGetCameraParameter(cam, param)
def CLEyeSetCameraParameter(cam, param, value):
return dll.CLEyeSetCameraParameter(cam, param, value)
def CLEyeGetCameraUUID(index):
return dll.CLEyeGetCameraUUID(index)
def CLEyeCreateCamera(uuid, color_mode, resolution_mode, fps):
return dll.CLEyeCreateCamera(uuid, color_mode, resolution_mode, fps)
def CLEyeCameraStart(cam):
return dll.CLEyeCameraStart(cam)
def CLEyeCameraStop(cam):
return dll.CLEyeCameraStop(cam)
def CLEyeDestroyCamera(cam):
return dll.CLEyeDestroyCamera(cam)
def CLEyeCameraGetFrame(cam, fram, timeout):
return dll.CLEyeCameraGetFrame(cam, frame, 100)
if __name__ == ‘__main__’:
import cv2.cv
from array import array
print ‘camera count’, CLEyeGetCameraCount()
print ‘UUID for first camera’, CLEyeGetCameraUUID(1)
print ‘UUID for second camera’, CLEyeGetCameraUUID(0)
cam = CLEyeCreateCamera(CLEyeGetCameraUUID(1), CLEYE_COLOR_PROCESSED, CLEYE_VGA, 60.)
cam2= CLEyeCreateCamera(CLEyeGetCameraUUID(0), CLEYE_COLOR_PROCESSED, CLEYE_VGA, 60.)
print cam
print cam2
CLEyeSetCameraParameter(cam, CLEYE_AUTO_GAIN, 0)
CLEyeSetCameraParameter(cam, CLEYE_AUTO_EXPOSURE, 0)
CLEyeSetCameraParameter(cam, CLEYE_AUTO_WHITEBALANCE, 1)
CLEyeSetCameraParameter(cam2, CLEYE_AUTO_GAIN, 0)
CLEyeSetCameraParameter(cam2, CLEYE_AUTO_EXPOSURE, 0)
CLEyeSetCameraParameter(cam2, CLEYE_AUTO_WHITEBALANCE, 1)
#if set to auto just ignored
CLEyeSetCameraParameter(cam, CLEYE_GAIN, 60)
CLEyeSetCameraParameter(cam, CLEYE_EXPOSURE, 25)
CLEyeSetCameraParameter(cam, CLEYE_WHITEBALANCE_RED, 50)
CLEyeSetCameraParameter(cam, CLEYE_WHITEBALANCE_BLUE, 50)
CLEyeSetCameraParameter(cam, CLEYE_WHITEBALANCE_GREEN, 50)
CLEyeSetCameraParameter(cam2, CLEYE_GAIN, 60)
CLEyeSetCameraParameter(cam2, CLEYE_EXPOSURE, 25)
CLEyeSetCameraParameter(cam2, CLEYE_WHITEBALANCE_RED, 50)
CLEyeSetCameraParameter(cam2, CLEYE_WHITEBALANCE_BLUE, 50)
CLEyeSetCameraParameter(cam2, CLEYE_WHITEBALANCE_GREEN, 50)
print “auto gain”, CLEyeGetCameraParameter(cam, CLEYE_AUTO_GAIN)
print “auto exposure”, CLEyeGetCameraParameter(cam, CLEYE_AUTO_EXPOSURE)
print “auto whitebalance”, CLEyeGetCameraParameter(cam, CLEYE_AUTO_WHITEBALANCE)
print “gain”, CLEyeGetCameraParameter(cam, CLEYE_GAIN)
print “exposure”, CLEyeGetCameraParameter(cam, CLEYE_EXPOSURE)
print “red”, CLEyeGetCameraParameter(cam, CLEYE_WHITEBALANCE_RED)
print “green”, CLEyeGetCameraParameter(cam, CLEYE_WHITEBALANCE_BLUE)
print “blue”, CLEyeGetCameraParameter(cam, CLEYE_WHITEBALANCE_GREEN)
x, y = CLEyeCameraGetFrameDimensions(cam)
x2, y2 = CLEyeCameraGetFrameDimensions(cam2)
print x, y,x2,y2
CLEyeCameraStart(cam)
CLEyeCameraStart(cam2)
frame = ctypes.create_string_buffer(x * y * 4)
frame2 = ctypes.create_string_buffer(x2 * y2 * 4)
cv2.cv.NamedWindow( “camera”, 1 )
cv2.cv.NamedWindow( “camera2”, 1 )
imagen=cv2.cv.CreateImage((x, y), 8, 4)
imagen2=cv2.cv.CreateImage((x2, y2), 8, 4)
#mat = cv2.cv.CreateMat(x, y, 0)
#mat2 = cv2.cv.CreateMat(x2, y2, 0)
i = 0
while True:
i += 1
CLEyeCameraGetFrame(cam, frame, 100)
cv2.cv.SetData(imagen, array(‘B’, frame[:]).tostring())
cv2.cv.ShowImage( “camera”, imagen )
CLEyeCameraGetFrame(cam2, frame2, 100)
cv2.cv.SetData(imagen2, array(‘B’, frame2[:]).tostring())
cv2.cv.ShowImage( “camera2”, imagen2 )
#cv2.cv.SaveImage(“r:\\Cap\\%i.jpg” % i, imagen)
if cv2.waitKey(1) & 0xFF == ord(‘q’):
break
CLEyeCameraStop(cam)
CLEyeDestroyCamera(cam)
CLEyeCameraStop(cam2)
CLEyeDestroyCamera(cam2)
cv2.destroyAllWindows()
.
