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@@ -55,21 +55,15 @@ def auto_init():
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global COUNT_TIME, RETRY_COUNT
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global AUTO_LEVEL
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global AUTO_RETRY_MAX
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global AUTO_COUNT_TIME
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global AUTO_EXP_LO, AUTO_EXP_HI
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global AUTO_THRESH1, AUTO_THRESH2, AUTO_THRESH3, AUTO_THRESH4
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global AUTO_THRESH1_COUNT, AUTO_THRESH2_COUNT
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global AUTO_THRESH3_COUNT, AUTO_THRESH4_COUNT
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AUTO_LEVEL = 0; AUTO_RETRY_MAX = 20; RETRY_COUNT=0
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AUTO_COUNT_TIME = 0
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AUTO_EXP_LO = 1; AUTO_EXP_HI = 10
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# for safety, set the thresh values gigantically high to start with
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AUTO_THRESH1=1e8; AUTO_THRESH2=1e9; AUTO_THRESH3=1e10; AUTO_THRESH4=1e11
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pixel.threshold1=1e8; pixel.threshold2=1e9; pixel.threshold3=1e10; pixel.threshold4=1e11
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# for safety, set the thresh values gigantically high to start with
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AUTO_THRESH1_COUNT=100; AUTO_THRESH2_COUNT=100; AUTO_THRESH3_COUNT=100
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AUTO_THRESH4_COUNT=100
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image.thresh1_count=100; image.thresh2_count=100; image.thresh3_count=100; image.thresh4_count=100
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COUNT_TIME = AUTO_EXP_LO
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auto_init()
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@@ -97,7 +91,7 @@ def auto_set_exposure(short_exp, long_exp):
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where <short> is the shorter and <long>
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the longer exposure time in seconds [s].
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"""
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global AUTO_EXP_LO, AUTO_EXP_HI, AUTO_THRESH1, AUTO_THRESH2, AUTO_THRESH3, AUTO_THRESH4
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global AUTO_EXP_LO, AUTO_EXP_HI
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AUTO_EXP_LO = short_exp
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AUTO_EXP_HI = long_exp
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@@ -107,7 +101,7 @@ def auto_set_exposure(short_exp, long_exp):
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print "Invalid auto_set_exposure values - set to default values <<"
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auto_show_exposure()
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# set AUTO_TRESH2 1.5 times higher than ratio of counting times to avoid oscillations
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AUTO_THRESH2 = AUTO_THRESH1 * (AUTO_EXP_HI/AUTO_EXP_LO) * 1.5
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pixel.threshold2 = pixel.threshold1 * (AUTO_EXP_HI/AUTO_EXP_LO) * 1.5
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def auto_show():
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@@ -172,11 +166,8 @@ def auto_adjust():
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global COUNT_TIME
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global AUTO_LEVEL
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global AUTO_RETRY_MAX
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global AUTO_COUNT_TIME
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global AUTO_EXP_LO, AUTO_EXP_HI
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global AUTO_THRESH1, AUTO_THRESH2, AUTO_THRESH3, AUTO_THRESH4
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global AUTO_THRESH1_COUNT, AUTO_THRESH2_COUNT
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global AUTO_THRESH3_COUNT, AUTO_THRESH4_COUNT
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if (AUTO_LEVEL < 1):
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return(0) # do nothing when auto-level is zero
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@@ -192,7 +183,7 @@ def auto_adjust():
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autoTransmVal = transm.getPosition()
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# try to set filters and exposure time
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if (AUTO_THRESH4_COUNT > 2):
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if (image.thresh2_count > 2):
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# intensity too high -> reduce exposure time or filter transmission
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if ((AUTO_LEVEL >= 2) and (autoExposure > AUTO_EXP_LO)):
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autoExposure = AUTO_EXP_LO
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@@ -203,7 +194,7 @@ def auto_adjust():
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print("Intensity too high, reducing transmission to %.3e\n" % transm.getPosition())
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autoAdjusted = 1
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if (AUTO_THRESH2_COUNT < 1):
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if (image.thresh2_count < 1):
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# intensity too low -> take out filter or increase exposure time
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if (autoTransmVal < 1.0):
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# take out filter
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@@ -211,7 +202,7 @@ def auto_adjust():
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autoTransmVal = transm.getPosition()
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autoTransmVal *= 10.0
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if (AUTO_THRESH1_COUNT < 1) :
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if (image.thresh1_count < 1) :
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autoTransmVal *= 5.0
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# readjust transmission-soll if it is > 1 now.
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@@ -224,12 +215,12 @@ def auto_adjust():
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# increase exposure time?
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if ((AUTO_LEVEL >= 2) and (autoExposure < AUTO_EXP_HI)):
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# check for long exposure-time
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if (AUTO_THRESH1_COUNT < 1):
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if (image.thresh1_count < 1):
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autoExposure = AUTO_EXP_HI
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autoAdjusted = 1
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print("Intensity too low - setting exposure to %d sec\n"% autoExposure)
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if ((AUTO_THRESH3_COUNT < 1) and (AUTO_THRESH2_COUNT > 1)):
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if ((image.thresh3_count < 1) and (image.thresh2_count > 1)):
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# decrease exptime?
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if ((AUTO_LEVEL >= 2) and (autoExposure > AUTO_EXP_LO)):
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autoExposure = AUTO_EXP_LO
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@@ -252,7 +243,7 @@ def auto_adjust():
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print("Intensity too low, increasing transmission to %.3e\n" % transm.getPosition())
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autoAdjusted = 1
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if ((AUTO_THRESH4_COUNT < 1) and (AUTO_THRESH3_COUNT > 1)):
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if ((image.thresh4_count < 1) and (image.thresh3_count > 1)):
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# decrease exptime?
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if ((AUTO_LEVEL >= 2) and (autoExposure > AUTO_EXP_LO)):
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autoExposure = AUTO_EXP_LO
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@@ -261,9 +252,8 @@ def auto_adjust():
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autoAdjusted = 1
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if (AUTO_LEVEL == 2):
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AUTO_COUNT_TIME = autoExposure
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COUNT_TIME = AUTO_COUNT_TIME
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_ctime = AUTO_COUNT_TIME # set the counting time for a scan to
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COUNT_TIME = autoExposure
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set_count_time(COUNT_TIME)
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return autoAdjusted
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###################################################################################################
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