laospy.camera.LittleJoeCamera Class Reference

Collaboration diagram for laospy.camera.LittleJoeCamera:

Public Member Functions
def	__init__ (self, _con)
def	state (self)
def	stop (self)
def	readEndless (self)
def	get_program (self)
def	set_program (self, program)
def	get_attenuation (self)
def	set_attenuation (self, attenuation)
def	get_image (self, nFrames=1, _checkZero=False, _async=None)
def	calibrate_bias_frame (self, skipEdge=3, trimLevel=0.2, nFrames=10)
def	set_bias_frame (self, frame)
def	get_channel_mean (self, skipEdge, trimLevel, nFrames=10, _async=None)
def	align_channel_bias (self, biasTargetLevel=200, biasIncrement=50, maxBiasProbe=1000, nFrames=10, skipEdge=3, trimLevel=0.2, biasStart=0, _async=None)
def	calibrate_program_channel_bias (self, filename, programs, biasTargetLevel=100, biasIncrement=50, maxBiasProbe=1000, nFrames=10, skipEdge=3, trimLevel=0.2, biasStart=0)
def	__init__ (self, _con)
def	state (self)
def	stop (self)
def	readEndless (self)
def	get_program (self)
def	set_program (self, program)
def	get_attenuation (self)
def	set_attenuation (self, attenuation)
def	get_image (self, nFrames=1, _checkZero=False, _async=None)
def	calibrate_bias_frame (self, skipEdge=3, trimLevel=0.2, nFrames=10)
def	set_bias_frame (self, frame)
def	get_channel_mean (self, skipEdge, trimLevel, nFrames=10, _async=None)
def	align_channel_bias (self, biasTargetLevel=200, biasIncrement=50, maxBiasProbe=1000, nFrames=10, skipEdge=3, trimLevel=0.2, biasStart=0, _async=None)
def	calibrate_program_channel_bias (self, filename, programs, biasTargetLevel=100, biasIncrement=50, maxBiasProbe=1000, nFrames=10, skipEdge=3, trimLevel=0.2, biasStart=0)

Public Attributes
	ctrl
	nChanRows
	nChanCols
	nChannels
	channelIndex

Static Public Attributes
int	nChannels = 0
int	nChanRows = 0
int	nChanCols = 0
string	node = ''
	biasFrame = None

Detailed Description

High-level calibration and operation methods for CCD39, CCD47, and CCD50.

Constructor & Destructor Documentation

__init__() [1/2]

def laospy.camera.LittleJoeCamera.__init__	(		self,
			_con
	)

Initializes the LittleJoeCamera object

Parameters (2 alternatives)
----------
_con: string
    ccd Service node as defined in the alias file

_con: connected ctrl interface
    ccd Ctrl Service

__init__() [2/2]

def laospy.camera.LittleJoeCamera.__init__	(		self,
			_con
	)

Initializes the LittleJoeCamera object

Parameters (2 alternatives)
----------
_con: string
    ccd Service node as defined in the alias file

_con: connected ctrl interface
    ccd Ctrl Service

Member Function Documentation

align_channel_bias() [1/2]

def laospy.camera.LittleJoeCamera.align_channel_bias	(		self,
			biasTargetLevel = 200,
			biasIncrement = 50,
			maxBiasProbe = 1000,
			nFrames = 10,
			skipEdge = 3,
			trimLevel = 0.2,
			biasStart = 0,
			_async = None
	)

Equalizes the bias level for all channels of the CCD

Parameters
----------
biasTargetLevel : int
    the approximate bias level for all channels after alignment


biasIncrement : int
    the steps in which the  bias setting is increased while probing the response

maxBiasProbe :  int
    the highest value for the bias setting.

nFrames : int
    the number of images over which the response is averaged

skipEdge : int
    the number of pixel columns and rows around the edge of each channel to be excluded
    from the bias level detection

trimLevel : float (0..1)
    the percentage of pixel values at the upper and lower end of the histogram to be
    ignored in the determination of the bias level (to exclude dead pixels)

biasStart : int
    the starting value for the bias setting

align_channel_bias() [2/2]

def laospy.camera.LittleJoeCamera.align_channel_bias	(		self,
			biasTargetLevel = 200,
			biasIncrement = 50,
			maxBiasProbe = 1000,
			nFrames = 10,
			skipEdge = 3,
			trimLevel = 0.2,
			biasStart = 0,
			_async = None
	)

Equalizes the bias level for all channels of the CCD

Parameters
----------
biasTargetLevel : int
    the approximate bias level for all channels after alignment


biasIncrement : int
    the steps in which the  bias setting is increased while probing the response

maxBiasProbe :  int
    the highest value for the bias setting.

nFrames : int
    the number of images over which the response is averaged

skipEdge : int
    the number of pixel columns and rows around the edge of each channel to be excluded
    from the bias level detection

trimLevel : float (0..1)
    the percentage of pixel values at the upper and lower end of the histogram to be
    ignored in the determination of the bias level (to exclude dead pixels)

biasStart : int
    the starting value for the bias setting

calibrate_bias_frame() [1/2]

def laospy.camera.LittleJoeCamera.calibrate_bias_frame	(		self,
			skipEdge = 3,
			trimLevel = 0.2,
			nFrames = 10
	)

Calibrates the bias frame

Run this calibration with all lights off!

Parameters
----------
skipEdge : int
    the number of pixel columns and rows around the edge of each channel to be excluded
    from the bias level detection

trimLevel : float (0..1)
    the percentage of pixel values at the upper and lower end of the histogram to be
    ignored in the determination of the bias level (to exclude dead pixels)

nFrames : integer (default = 10)
    number of frames over which the mean image is calculated

calibrate_bias_frame() [2/2]

def laospy.camera.LittleJoeCamera.calibrate_bias_frame	(		self,
			skipEdge = 3,
			trimLevel = 0.2,
			nFrames = 10
	)

Calibrates the bias frame

Run this calibration with all lights off!

Parameters
----------
skipEdge : int
    the number of pixel columns and rows around the edge of each channel to be excluded
    from the bias level detection

trimLevel : float (0..1)
    the percentage of pixel values at the upper and lower end of the histogram to be
    ignored in the determination of the bias level (to exclude dead pixels)

nFrames : integer (default = 10)
    number of frames over which the mean image is calculated

calibrate_program_channel_bias() [1/2]

def laospy.camera.LittleJoeCamera.calibrate_program_channel_bias	(		self,
			filename,
			programs,
			biasTargetLevel = 100,
			biasIncrement = 50,
			maxBiasProbe = 1000,
			nFrames = 10,
			skipEdge = 3,
			trimLevel = 0.2,
			biasStart = 0
	)

Determines the bias levels for each combination of program and attenuation

Parameters
----------
filename : string
    name of the logfile

programs : list of int
    programs to be considered in the calibration

biasTargetLevel: int
    the approximate bias level for all channels after alignment

biasIncrement : int
    the steps in which the  bias setting is increased while probing the response

maxBiasProbe :  int
    the highest value for the bias setting.

nFrames : int
    the number of images over which the response is averaged

skipEdge : int
    the number of pixel columns and rows around the edge of each channel to be excluded
    from the bias level detection

trimLevel : float (0..1)
    the percentage of pixel values at the upper and lower end of the histogram to be
    ignored in the determination of the bias level (to exclude dead pixels)

biasStart : int
    the starting value for the bias setting

calibrate_program_channel_bias() [2/2]

def laospy.camera.LittleJoeCamera.calibrate_program_channel_bias	(		self,
			filename,
			programs,
			biasTargetLevel = 100,
			biasIncrement = 50,
			maxBiasProbe = 1000,
			nFrames = 10,
			skipEdge = 3,
			trimLevel = 0.2,
			biasStart = 0
	)

Determines the bias levels for each combination of program and attenuation

Parameters
----------
filename : string
    name of the logfile

programs : list of int
    programs to be considered in the calibration

biasTargetLevel: int
    the approximate bias level for all channels after alignment

biasIncrement : int
    the steps in which the  bias setting is increased while probing the response

maxBiasProbe :  int
    the highest value for the bias setting.

nFrames : int
    the number of images over which the response is averaged

skipEdge : int
    the number of pixel columns and rows around the edge of each channel to be excluded
    from the bias level detection

trimLevel : float (0..1)
    the percentage of pixel values at the upper and lower end of the histogram to be
    ignored in the determination of the bias level (to exclude dead pixels)

biasStart : int
    the starting value for the bias setting

get_attenuation() [1/2]

def laospy.camera.LittleJoeCamera.get_attenuation

(

self

)

get_attenuation() [2/2]

def laospy.camera.LittleJoeCamera.get_attenuation

(

self

)

get_channel_mean() [1/2]

def laospy.camera.LittleJoeCamera.get_channel_mean	(		self,
			skipEdge,
			trimLevel,
			nFrames = 10,
			_async = None
	)

Gets an image and finds the mean of each channel

Parameters
----------
skipEdge : int
    the number of pixel columns and rows around the edge of each channel to be excluded
    from the bias level detection

trimLevel : float (0..1)
    the percentage of pixel values at the upper and lower end of the histogram to be
    ignored in the determination of the bias level (to exclude dead pixels)

nFrames : int
    the number of images over which the response is averaged

get_channel_mean() [2/2]

def laospy.camera.LittleJoeCamera.get_channel_mean	(		self,
			skipEdge,
			trimLevel,
			nFrames = 10,
			_async = None
	)

Gets an image and finds the mean of each channel

Parameters
----------
skipEdge : int
    the number of pixel columns and rows around the edge of each channel to be excluded
    from the bias level detection

trimLevel : float (0..1)
    the percentage of pixel values at the upper and lower end of the histogram to be
    ignored in the determination of the bias level (to exclude dead pixels)

nFrames : int
    the number of images over which the response is averaged

get_image() [1/2]

def laospy.camera.LittleJoeCamera.get_image	(		self,
			nFrames = 1,
			_checkZero = False,
			_async = None
	)

Returns an image from the LittleJoe Camera

Optionally the image is averaged over several frames. Bias correction is applied if a bias
frame is set.

Parameters
----------
nFrames : integer
    number of frames over which the returned image is averaged
_checkZero : bool
    stop reading if first image is zero

Returns
-------
out : ndarray

get_image() [2/2]

def laospy.camera.LittleJoeCamera.get_image	(		self,
			nFrames = 1,
			_checkZero = False,
			_async = None
	)

Returns an image from the LittleJoe Camera

Optionally the image is averaged over several frames. Bias correction is applied if a bias
frame is set.

Parameters
----------
nFrames : integer
    number of frames over which the returned image is averaged
_checkZero : bool
    stop reading if first image is zero

Returns
-------
out : ndarray

get_program() [1/2]

def laospy.camera.LittleJoeCamera.get_program

(

self

)

get_program() [2/2]

def laospy.camera.LittleJoeCamera.get_program

(

self

)

readEndless() [1/2]

def laospy.camera.LittleJoeCamera.readEndless

(

self

)

readEndless() [2/2]

def laospy.camera.LittleJoeCamera.readEndless

(

self

)

set_attenuation() [1/2]

def laospy.camera.LittleJoeCamera.set_attenuation	(		self,
			attenuation
	)

Sets the attenuation value

Parameters
----------
attenuation: integer
    attenuation value [0..3]

set_attenuation() [2/2]

def laospy.camera.LittleJoeCamera.set_attenuation	(		self,
			attenuation
	)

Sets the attenuation value

Parameters
----------
attenuation: integer
    attenuation value [0..3]

set_bias_frame() [1/2]

def laospy.camera.LittleJoeCamera.set_bias_frame	(		self,
			frame
	)

Sets the bias frame

Note: set frame to "None" to remove existing frame

Parameters
----------
frame : ndarray or None
    array with bias values

set_bias_frame() [2/2]

def laospy.camera.LittleJoeCamera.set_bias_frame	(		self,
			frame
	)

Sets the bias frame

Note: set frame to "None" to remove existing frame

Parameters
----------
frame : ndarray or None
    array with bias values

set_program() [1/2]

def laospy.camera.LittleJoeCamera.set_program	(		self,
			program
	)

Sets a new program

Parameters
----------
program: integer
    program number [0..7]

set_program() [2/2]

def laospy.camera.LittleJoeCamera.set_program	(		self,
			program
	)

Sets a new program

Parameters
----------
program: integer
    program number [0..7]

state() [1/2]

def laospy.camera.LittleJoeCamera.state

(

self

)

state() [2/2]

def laospy.camera.LittleJoeCamera.state

(

self

)

stop() [1/2]

def laospy.camera.LittleJoeCamera.stop

(

self

)

stop() [2/2]

def laospy.camera.LittleJoeCamera.stop

(

self

)

Member Data Documentation

biasFrame

laospy.camera.LittleJoeCamera.biasFrame = None

static

channelIndex

laospy.camera.LittleJoeCamera.channelIndex

ctrl

laospy.camera.LittleJoeCamera.ctrl

nChanCols [1/2]

int laospy.camera.LittleJoeCamera.nChanCols = 0

static

nChanCols [2/2]

laospy.camera.LittleJoeCamera.nChanCols

nChannels [1/2]

int laospy.camera.LittleJoeCamera.nChannels = 0

static

nChannels [2/2]

laospy.camera.LittleJoeCamera.nChannels

nChanRows [1/2]

int laospy.camera.LittleJoeCamera.nChanRows = 0

static

nChanRows [2/2]

laospy.camera.LittleJoeCamera.nChanRows

node

string laospy.camera.LittleJoeCamera.node = ''

static

---

The documentation for this class was generated from the following file:

• /home/nirva/insroot/lib/python/site-packages/laospy/camera.py