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e2v UNIIQA+ 16k CL User Manual Download Page 25

  

® 16k CL  

25

         UM 16kCL – REVC – 11/14 

        

e2v semiconductors SAS 2014

 

6.3.5

 

 Flat Field Correction 

 

 

 

  

How is performed the Flat Field Correction ? 

 

What is the Flat Field correction (FFC) ? 

The Flat Field Correction is a digital correction on each pixel which allows : 

 

To correct the Pixel PRNU (Pixel Response Non Uniformity) and DSNU (Dark Signal Non Uniformity) 

 

To Correct the shading due to the lens 

 

To correct the Light source non uniformity 

 
              Before 

                                                                                                      After 

 
 
 
 
 
 

   

 
 

How is calculated / Applied the FFC ? 

 
The FFC is a digital correction on the pixel level for both Gain and Offset. 

 

Each Pixel is corrected with : 

o

 

An Offset on 10 bits (Signed Int S9.1). They cover a dynamic of 

256LSB in 12bits with a resolution of 1/2 LSB 

12bits. Offet : the MSB is the sign, the rest of 9bits is from 0 .. 256 with precision of 1/2 

o

 

A Gain on 12 bits (Unsigned Int U2.12) with a max gain value of x5

(*)

 

The calculation of the new pixel value is :  P’ = ( P + Off).(1 + Gain/1024

(*)

). Gain : 0 to 4095 

 
The FFC processing can be completed with an automatic adjustment to a global target. This function is designed as 
“FFC Adjust”. This adjustment to a User  target is done by an internal hidden gain which is re-calculated each time the 
FFC is processed while the FFC adjust function is enabled. 
 
The FFC is always processed with the max pixel value of the line as reference. If enabled, the FFC adjust module 
(located at the output of the FFC module) calculates the adjustment gain to reach the target defined by the User. 
 
When the FFC result is saved in memory, the adjust gain and target are saved in the same time in order to associate 
this gain value with the FFC result. 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for UNIIQA+ 16k CL

Page 1: ...UNIIQA 16k CL Cmos Monochrome Camera User Manual ...

Page 2: ...figuration 11 4 STANDARD CONFORMITY 12 4 1 CE Conformity 12 4 2 FCC Conformity 12 4 3 RoHs Conformity 12 5 GETTING STARTED 14 5 1 Out of the box 14 5 2 Setting up in the system 14 6 CAMERA SOFTWARE INTERFACE 15 6 1 Control and Interface 15 6 2 Serial Protocol and Command Format 16 6 2 1 Syntax 16 6 2 2 Command Processing 16 6 2 3 GenICam ready 16 6 3 Camera Commands 17 6 3 1 Information 17 6 3 2 I...

Page 3: ... Variable Exposure Time 38 8 2 Synchronisation Modes with Maximum Exposure Time 39 8 3 Timing Values 39 9 APPENDIX C CameraLink Data Cables 40 10 APPENDIX D Lenses Compatibility 41 11 APPENDIX E TROUBLESHOOTING 43 11 1 Camera 43 11 2 CommCam Connection 43 12 APPENDIX F Command Summary Tables 44 12 1 Device Control 44 12 2 Image Format 44 12 3 Synchro and Acquisition 45 12 4 Gain Offset 45 12 5 Fla...

Page 4: ...he Market 1 2 Key Specifications Note All values in LSB is given in 12 bits format Characteristics Typical Value Unit Sensor Characteristics at Maximum Pixel Rate Resolution 16384 Pixels pixel size square 5 x 5 µm Max line rate CameraLink Full 10 x 85MHz 50 kHz Max line rate CameraLink Full 8 x 85MHz 40 Max line rate CameraLink Medium 4 x 85MHz 20 Radiometric Performance at Maximum Pixel Rate and ...

Page 5: ... and RoHS compliant 1 3 Description e2v s next generation of line scan cameras are setting new high standards for line rate and image quality Thanks to e2v s recently developed CMOS technology the camera provides 50 000 lines s in a 16k pixel format and combines high response with an extremely low noise level this delivers high signal to noise ratio even when short integration times are required o...

Page 6: ...650 13650 SNR dB 40 37 34 Peak Response 660nm LSB nJ cm2 137 274 547 Non Linearity 0 3 0 3 0 3 Without Flat Field Correction FPN rms LSB 0 4 1 5 0 7 1 5 0 8 1 5 FPN pk pk LSB 3 2 15 5 15 5 6 15 PRNU hf 3 4 Sat 0 13 0 25 0 1 0 25 0 1 0 25 PRNU pk pk 3 4 Sat 1 3 0 8 3 0 8 3 Test conditions Figures in LSB are for a 12bits format Measured at exposure time 50µs and line period 50µs in Ext Trig Mode Max...

Page 7: ...UNIIQA 16k CL 7 UM UNIIQA 16kCL REVC 11 14 e2v semiconductors SAS 2014 2 3 Response QE curves 2 3 1 Quantum Efficiency 2 3 2 Spectral Response ...

Page 8: ...UNIIQA 16k CL 8 UM UNIIQA 16kCL REVC 11 14 e2v semiconductors SAS 2014 3 CAMERA HARDWARE INTERFACE 3 1 Mechanical Drawings Z X Y The Step file is available on the web www e2v com cameras ...

Page 9: ...s and LED Sensor alignment Z 9 4 mm 100µm X 9 mm 100 µm Y 50mm 100 µm Flatness 25 µm Rotation X Y plan 0 1 Tilt versus lens mounting plane 50µm USB Connector For Firmware upgrade Power Connector 12 24V DC Multi Colored LED for Status and diagnostic CameraLink Connector CL1 CameraLink Connector CL2 ...

Page 10: ...le Camera side description Signal Pin Signal Pin PWR 1 GND 4 PWR 2 GND 5 PWR 3 GND 6 Power supply from 12 to 24v Power 13W max with an typical inrush current peak of 1 8A during power up Power up Time Around 43s Green Light 0 0 5 1 1 5 2 0 041 0 042 0 043 0 044 time s Inrush current A Typical values Current consumption 12V 24V UNIIQA CL normal 1 06A 0 54A UNIIQA CL Standby 0 47A 0 25A ...

Page 11: ...our and state Meaning Green and continuous OK Green and blinking slowly Waiting for Ext Trig Trig1 and or Trig2 Red and continuous Camera out of order Internal firmware error 3 2 3 CameraLink Output Configuration Connector CL1 CL2 Pixels per Channel Medium CameraLink Mode 4 Channels 8bits 4 x 85MHz 4 x 4096 4 Channels 12bits 4 x 85MHz 4 x 4096 Full CameraLink Mode 8 Channels 8bits 8 x 85MHz 8 x 20...

Page 12: ...terferencethat may cause undesired operation This equipmenthas been tested and found to comply with the limits for Class A digital device pursuant to part 15 of the FCC rules These limits are designedto provide reasonableprotectionagainst harmful interferencewhen the equipmentis operatedin a commercialenvironment This equipmentgenerates uses and can radiate radio frequencyenergy and if not install...

Page 13: ...UNIIQA 16k CL 13 UM UNIIQA 16kCL REVC 11 14 e2v semiconductors SAS 2014 ...

Page 14: ...ere is no CDROM delivered with the Camera Both User Manual this document and CommCam control software have to be downloaded from the web site This ensure you to have an up to date version Main Camera page www e2v com cameras On the appropriate Camera Page UNIIQA you ll find a download link first version of CommCam compliant is indicated in the last Chapter CommCam download requires a login passwor...

Page 15: ...ich is based on the GenICam standard COMMCAM recognizes and detects automatically all the UCL Cameras connected on any transport layers Camera Link or COM ports of your system Once connected to the Camera you have an easy access to all its features The visibility of these features can be associated to three types of users Beginner Expert or Guru Then you can make life easy for simple users Minimum...

Page 16: ...e has to be received before sending a new command The camera return code has to be received before sending a new command Some commands are longer than the others Waiting for the return code ensure a good treatment of all the commands Without saturating the buffer of the camera Table 5 1 Camera Returned Code Returned code meaning 0 or OK All right the command will be implemented 3 Error Bad CRC for...

Page 17: ...ncluding 0 Cannot be written Device Version DeviceVersion Get Camera Hardware version Read function r dhwv Returned by the camera String of 32 bytes including 0 Cannot be written Device Firmware Version DeviceFirmwareVersion Get camera synthetic firmware Read function r dfwv Returned by the camera String of 16 bytes including 0 Cannot be written Device SFNC Version 1 5 0 These Parameters Major Min...

Page 18: ...ite function w baud index with the index as follows 1 9600 Bauds default value at power up 2 19200Bauds 6 57600Bauds 12 115200Bauds Standby Mode Standby Activation of the Standby mode of the Camera Read function r stby Returned by the camera Boolean 0 Disable Standby mode False 1 Enable stanby mode True Write function w stby val val is 0 or 1 A standby mode what for The Standby mode stops all acti...

Page 19: ...am Image Format Control section Read function r snsw Return by the sensor Integer 16384 Can not be written Sensor Height SensorHeight Get the physical height of the Sensor This value is available in the CommCam Image Format Control section No Access Virtual command in xml Value always 1 Width Max WidthMax Get the Maximum Width of the Sensor This value is available in the CommCam Image Format Contr...

Page 20: ... value 0 Disabled 1 Enables the reverse reading out see below for normal direction Test Image Selector TestImageSelector Defines if the data comes from the Sensor or the FPGA test Pattern This command is available in the CommCam Image Format section Read function r srce Returned by the camera 0 if Source from the Sensor and 1 to 5 if test pattern active Write function w srce value 0 To switch to C...

Page 21: ...Timing values associated are detailed in the APPENDIX B of this document Exposure time ExposureTime Defines the exposure time when set in the Camera This command is available in the CommCam Acquisition Control section Read function r tint Returned by the camera Integer from 15 to 65535 1 5µs to 6553 5µs by step o 0 1µs Write function w tint value This value of exposure time is taken in account onl...

Page 22: ...e in the UNIIQA is located at the sensor level in the ADC converter This Preamp Gain is in fact a variation of the ramp of the comparator of the ADC Then 3 Values are available x1 x2 and x4 A gain x1 in a 12 bits conversion is equivalent to x4 in 10 bits OUT Pixel X Preamp Gain X ROI Gain X FFC Offset Gain X FFC Adjust X LUT or Contrast Exp Offset Gain FPGA Sensor X Quarter Tap Gains Action on who...

Page 23: ... BlackLevelSelector All Set the global Digital Offset This command is available in the CommCam Gain Offset section Read function r offs Returned by the camera Value from 4096 to 4095 in LSB Write function w offs int The Contrast Expansion both Digital Gain Offset will be automatically disabled if the LUT is enabled Tap Balance Gains Enable Switch TapBalanceGainEnable Read function r tbe Returns th...

Page 24: ... ROI Region of Interest This second command applies the Gain on the ROI in memory and this is immediately activated The ROI Gain is a live feature that can be overlapped but can t be saved in memory Here is an example to apply a complementary gain of x1 5 512 between the pixels 5263 0x148F and 9002 0x232A pixels included The two commands are w roig 512 w rois 0x148F232A Result with FFC activated R...

Page 25: ...B 12bits Offet the MSB is the sign the rest of 9bits is from 0 256 with precision of 1 2 o A Gain on 12 bits Unsigned Int U2 12 with a max gain value of x5 The calculation of the new pixel value is P P Off 1 Gain 1024 Gain 0 to 4095 The FFC processing can be completed with an automatic adjustment to a global target This function is designed as FFC Adjust This adjustment to a User target is done by...

Page 26: ...and Filter if the Target can t move This will remove the defects of the target itself Launch the FFC Enable the FFC You can save the FFC result both FPN PRNU in the same time in one of the 8 x FFC User Banks The user target and Gain are saved with the associated FFC in the same memory Advices The UNIIQA Cameras have 8 x FFC Banks to save 8 x different FFC calibrations You can use this feature if y...

Page 27: ...C Adjust function o Auto Adjust Target Level FFCAutoTargetLevel set the value for the User Target Read function r tfad Returns the Target value from 0 to 4095 Write function w tfad value Set the Target Value in 12bits FFC Adjust A good usage When there are several Cameras to set up in a system on a single line the most difficult is to have a uniform lightning whole along the line If each Camera pe...

Page 28: ...et Reset the FPN Offsets coefficient in Memory This command is available in the CommCam Flat Field Correction Manual Calibration section Write function w rsto 0 Reset set to 0 the FPN coefficients in memory This doesn t affect the FFC User Memory Bank but only the active coefficients in Memory PRNU Calibration o PRNU Calibration Control FFCCalibrationCtrl Launch or abort of the PRNU process for th...

Page 29: ...e read packets of x128 coefficients Read function r ffco addr Read 128 consecutive FPN user coefficients starting from addr address Returned value is in hexadecimal without space between values one unsigned short per coefficient Write function w ffco addr val Write 128 consecutive FPN user coefficients starting from the addr address val is the concatenation of individual FPN values without space b...

Page 30: ...k in the current FFC Read function r rffc Get the current FFC Bank used Returned by the camera 0 for Factory bank or 1 to 8 for User banks Write function w rffc val Bank val 1 to 8 for User banks Note Factory means neutral FFC no correction Save FFC in User Bank SaveFFCToBank Save current FFC in User Bank Can not be read Write function w sffc val User bank val if from 1 to 8 FFC User Bank Usage Us...

Page 31: ... for reading or writing In CommCam the User can access to a specific interface by clicking on click for extended control in the LUT section Read function r lutc addr Read 128 LUT coefficients starting from address addr from 0 to 4095 128 Returned value is the concatenation in hexadecimal of individual LUT values without space between values one unsigned short per coefficient Write function w lutc ...

Page 32: ...2 UM UNIIQA 16kCL REVC 11 14 e2v semiconductors SAS 2014 LUT User Bank Usage User1 User2 User3 User4 User banks At the power up Last User Bank used is loaded in RAM Ram Memory Save Load Upload load from to a Txt file ...

Page 33: ...on of interest Read function r pstd Get the standard deviation Returned by the camera Unsigned format value U12 4 o Pixel Min value PixelROIMin Minimum gray level pixel value on the whole region of interest Read function r pmin Get the Minimum value Returned by the camera Unsigned format value U12 4 o Pixel Max Value PixelROIMax Maximum gray level pixel value on the whole region of interest Read f...

Page 34: ...fic password is required to switch back the Camera in Integrator mode This password can be generated with a specific tool available from the hotline hotline cam e2v com This function is available in the Privilege section Privilege level Management PrivilegeLevel Get the current Camera privilege level Read function r lock Get the current privilege Returned by the camera 0 to 2 Write function w lock...

Page 35: ...or Integrator Save settings to Bank Allows to save the Camera settings in User or Integrator Bank Write function w scfg val Save the current settings in the User bank val 1 to 4 for User 5 for Integrator The integrator bank User Set5 can be written only if the Camera is set in integrator mode Privilege level 1 This integrator bank can be used as a Factory default by a system integrator Configurati...

Page 36: ...l in regards with the previous one In 12 bits the level reaches 4095 before switching down to 0 In 8 bits the level reaches 255 before switching down to 0 7 2 Test Pattern 2 Fixed Horizontal Ramps 7 2 1 In 8 bits Full format An increment of 1 LSB is made every 16 pixels When it reaches 255 turns back to 0 and starts again 0 50 100 150 200 250 0 2048 4096 6144 8192 10240 12288 14336 14 15 16 17 18 ...

Page 37: ...SAS 2014 7 2 2 In 12 bits Medium format An increment of 1 LSB is made for each pixel When it reaches 4095 turns back to 0 and starts again 0 1024 2048 3072 4096 0 2048 4096 6144 8192 10240 12288 14336 250 255 260 265 270 275 280 285 290 295 300 250 260 270 280 290 ...

Page 38: ...he analog Gain is applied by the gradient of the counting ramp see next chapter Gain Offset The conversion time depends on the pixel format 8 or 10 bits 6µs 12 bits 24µs This conversion is done in masked time eventually during the next exposure period Td Delay between the Start exposure required and the real start of the exposure Digital Conversion Tpix Line Trigger CC1 or Internal Td Tper Tintrea...

Page 39: ... the effective Exposure Time will be about Tintreal Tint Tx Td 8 2 Synchronisation Modes with Maximum Exposure Time In these modes the rising edge of the Trigger internal or External starts the readout process Tpix of the previous integration The Real exposure time Tintreal is finally equal to the Line Period Tper even if it s delayed from Tx Td from the rising edge of the incoming Line Trigger 8 ...

Page 40: ...imum total skew possible for each data rate Here is a following example of cable and the cable length limitation in accordance with the standard Starting with the firmware version 2 0 4B the camera has been improved in term data output quality in order to push back the limitation and allow about 5m of length on some good cables even specified at 50ps m 0 20 40 60 80 100 120 140 160 180 200 220 240...

Page 41: ...00 45 0703 102 000 20 SCHNEIDER KREUZNACH Nominal Magnification Magnification Range Working Distance at nom Mag Reference Part number SR 5 6 120 0058 1 X 0 88 1 13 X 212 mm 1002647 SR 5 6 120 0059 0 75 X 0 63 0 88 X 252 mm 1002648 SR 5 6 120 0060 0 5 X 0 38 0 63 X 333 mm 1002650 SR 5 6 120 0061 0 33 X 0 26 0 38 X 453 mm 1004611 Accessories V mount 25mm macro extension tube Necessary to combine the...

Page 42: ... NT68 222 TechSpec F4 1 33 X 158 5 mm NT68 223 TechSpec F4 2 0 X 129 mm NT68 224 TechSpec F4 3 0 X 110 mm NT68 225 Accessories Large Format Tip Tilt Bolt Pattern Adapter 2X NT69 235 Large Format Focusing Module NT69 240 Large Format Adapter Set NT69 241 NAVITAR Raptar Pro 4 86 1 X Extension Tubes on request 1 17494 NIKON Rayfact F4 0 05 X 0 5 X 1820 4mm 230 3mm Rayfact ML90mm F4 ...

Page 43: ...ftware Help for the connection issues Camera Power up 43s No LED Red LED Color Blinking Green Fixed Green Hardware failure or Firmware loading defect Contact Hotline for RMA If CommCam connection possible then the LED is HS else Check power supply And its characteristics Contact Hotline Camera ready Camera waits for Trigger or Trigger too fast Fixed Orange ...

Page 44: ...ensorHeight Xml virtual WidthMax Map on SensorWidth HeightMax Xml virtual Height Xml virtual Width Xml virtual Depends on OuputRegion OuputRegionWidth and SensorWidth ReverseReading r revr Get reverse reading value w revr 0 Set reverse reading to disable w revr 1 Set reverse reading to enable OutputMode r mode Get output mode CameraLink configuration and CMOS sensor resolution w mode 0 Set output ...

Page 45: ... and programmable line period 12 4 Gain Offset Feature Commands Description GainAbs GainSelector AnalogAll r pamp Get the current pre amp gain w pamp val Set pre amplifier gain to 0 12dB 1 6dB 2 0dB analog gain Change balances and compensation GainAbs GainSelector gainAll r gain Get current digital gain w gain val Set gain from 0dB 0 to 8 dB 6193 Gain Abs GainSelector DigitalAll r gdig Get contras...

Page 46: ...CCalibrationCtrl r calg Get the PRNU calibration status w calg 0 Abort PRNU calibration by setting it to Off no effect if already stopped w calg 1 Launch PRNU calibration by setting it to Once no effect if already launched PrnuCalibrationCtrl r calo Get the fpn calibration status w calo 0 Abort fpn calibration by setting it to Off no effect if already stopped w calo 1 Launch fpn calibration by set...

Page 47: ...0 Privilege Factory 1 Privilege Advanced User 2 Privilege User ChangePrivilegeLevel w lock 1 Lock camera privilege to Advanced User w lock 2 Lock camera privilege to User w lock val Unlock camera privilege depending on val min 256 max 232 1 DeviceTemperature r temp Read Mainboard internal temperature format signed Q10 2 signed 8 bits plus 2 bits below comma Value from 512 to 511 in C DeviceTempera...

Page 48: ...2 1024 No direct feature r pixv addr Read 128 pixel values starting from address addr from SensorWidth 128 1 Return value is in hexadecimal without space between values one unsigned short per coef PixelRoiStart r prod Get Roi start w prod val Set Roi start for pixel statistic computing 0 to SensorWidth 1 1 PixelRoiWidth r prow Get Roi width w prow val Set Roi width for pixel statistic computing 1 ...

Page 49: ...istory Manual Revision Comments Details Firmware version 1st CommCam compliant Version Rev A First release 1 0 0 2 2 2 Rev B Changing Documentation Template FFC Low Band Filter and 8 FFC Memory Banks 1 2 0 2 3 3 Rev C AVIIVA 16k change in UNIIQA 16k 1 2 0 2 4 0 Contact us online at e2v com imaging ...

Page 50: ...UNIIQA 16k CL 50 UM UNIIQA 16kCL REVC 11 14 e2v semiconductors SAS 2014 ...

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