##
# create folder for measurements
todaystr = datetime.datetime.now().strftime('%Y-%m-%d_%H-%M-%S')
myfolder = './ptycho_'+todaystr
os.mkdir(myfolder)
# Initilizae the Camera
#cap = cv2.VideoCapture('/dev/video0', cv2.CAP_V4L2)
#cap = cv2.VideoCapture('gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw, format=BGRx ! ximagesink')
cap = cv2.VideoCapture('v4l2src device=/dev/video0 ! video/x-raw, format=BGRx ! videoconvert ! appsink', cv2.CAP_GSTREAMER)
#cap = cv2.VideoCapture(0)
# Initialize position of the XY-stages
myxStepper = xy.xyStepper(myserial=serial, mycurrentposition=0, mystepper='x')
myyStepper = xy.xyStepper(myserial=serial, mycurrentposition=0, mystepper='y')
# Make sure we are at the edge of the stage
mycmd = myxStepper.reset_pos()
mycmd = myyStepper.reset_pos()
# read in the file with all positions
with open(mycsvfile, 'r') as f:
data = list(csv.reader(f, delimiter=";"))
myscanpoints = np.array(data[1:-1], dtype=np.float)
maxpos = np.max(myscanpoints,axis=0)*2
myscanpoints/=maxpos
minpos = np.min(myscanpoints,axis=0)
myscanpoints-=minpos
mycsvfile = './DATA/Fermat_FOV1200um_step72um_202points.csv'
# Initialize the USB-Serial connection
serial = serial.Serial("/dev/ttyUSB0", 9600)
time.sleep(1) # connect to ARduino
# camera paramters
# parameters for the x/y stage
stepsize = 17.27 # One STEPSIZE in X/Y of the cheap-stage is 17.27 µm
myoffsetx = 10 # offset steps for the x dirrection
myoffsety = 20 # offset steps for the y dirrection
mybacklashx = 10
mybacklashy = 50 # this is required to offset the stage from the non-moving rim
# Initialize position of the XY-stages
myxStepper = xy.xyStepper(myserial=serial,
mycurrentposition=0,
mystepper='x',
backlash=mybacklashx)
myyStepper = xy.xyStepper(myserial=serial,
mycurrentposition=0,
mystepper='y',
backlash=mybacklashy)
# Make sure we are at the edge of the stage
#myyStepper.reset_pos()
#myxStepper.reset_pos()
# read in the file with all positions
with open(mycsvfile, 'r') as f:
data = list(csv.reader(f, delimiter=";"))
myscanpoints = np.array(data[1:-1], dtype=np.float)
maxpos = np.max(myscanpoints, axis=0)
Ny = 10
StepsizeX = 10
StepsizeY = 10
# create folder for measurements
try:
os.mkdir(mydatafolder)
except:
print('Folder already exists')
todaystr = datetime.datetime.now().strftime('%Y-%m-%d_%H-%M-%S')
myfolder = mydatafolder + 'ptycho_' + todaystr
os.mkdir(myfolder)
# Initialize position of the XY-stages
Stepper_XY = xy.xyStepper(myserial=serial,
mycurrentposition=(0, 0),
mystepper='xy',
backlash=mybacklashx)
if (0):
# Make sure we are at the edge of the stage
mycmd = Stepper_X.reset_pos()
mycmd = Stepper_Y.reset_pos()
print('Start programm')
# Flush anything which is on the pipe..
serial.flushInput()
# move stepper forward/backward in X
for ix in range(Nx):
for iy in range(Ny):
