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7.7.6  Auto Exposure ROI Control

 

The pixel values used in the accumulator that 

drives the ALC can be selected from the “Auto ROI” 

tab. By default, the whole pixel array will be selected for this (1280x1024) as shown in Figure 11. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 10: ALC Tuning.   

Figure 11: Auto ROI.   

All controls to tune the 
ALC to fit the 

user’s

 

application 
requirements.  

 

All controls to select the 
pixel region that will 
drive the ALC. 

Summary of Contents for Ninox 1280

Page 1: ...1 NINOX 1280 Model NX1 7 VS CL 1280 USER MANUAL...

Page 2: ...mera to Chiller 8 6 2 Connecting Camera to Frame Grabber 8 7 XCAP IMAGING SOFTWARE 9 7 1 Computer System Requirements 9 7 2 Frame Grabber Requirements 9 7 3 Downloading and Installing XCAP 9 7 4 Openi...

Page 3: ...oscope or lens Use optical grade isopropyl to clean this window A cotton swab can be used but may leave some fibres on the window so be careful To avoid this you could also use a lens tissue or a clea...

Page 4: ...m x 10 m Active Area 12 8mm x 10 24mm Spectral response1 0 4 m to 1 7 m Readout Noise RMS LG Low Gain HG High Gain LG 190 electrons 160 electrons typical HG 50 electrons 47 electrons typical Quantum...

Page 5: ...e NUC In high gain in normal mode the NUC is also active for the full exposure time range up to the maximum 80ms exposure Note 3 Frame rates lower than 10Hz are achievable when in the long exposure mo...

Page 6: ...ed Owl Mini Owl 640 Ninox 640 Owl 1280 NINOX 1280 2 3 4 5 1 6 1 4 Pin Hirose Connector 2 SDR Camera Link Connector 3 SDR Camera Link Connector 4 SMA Connector Trigger OUT Single ended source impedance...

Page 7: ...nd control the camera on National Instruments Software such as NI MAX Contact a Raptor Sales employee to obtain this file 6 CAMERA SETUP This section will talk through setting up the camera including...

Page 8: ...m of the neck Switch on the circulator you will now see bubbles traveling along the tubing Wait for the bubbles to bleed into the reservoir top up the reservoir as required You should tilt the camera...

Page 9: ...ents to run the XCAP Imaging Software 7 2 Frame Grabber Requirements With the Ninox 1280 it is a minimum requirement to use an PIXCI E8 frame grabber If using a frame grabber from another company the...

Page 10: ...from the top menu bar in the main window A PIXCI Open Close pop up box will open as shown in Figure 1 below Click on Camera Format that is highlighted in Figure 1 and a PIXCI Open Camera Format box w...

Page 11: ...ow click Open in the PIXCI Open Close window Figure 1 Two windows will now open in XCAP and imaging window and control panel as shown in Figure 3 below 7 5 Ensuring the Camera is Connected There are t...

Page 12: ...and their effect on the camera s performance 7 7 1 Gain Exposure Frame Period The gain exposure time and frame period can be controlled from the Gain tab By default the auto exposure is enabled which...

Page 13: ...ame period Exposure Time Readout Time Therefore the maximum possible exposure time with a 40ms frame period is LOW GAIN Max Exposure Time 40ms 7 5ms readout time in low gain 32 5ms HIGH GAIN Max Expos...

Page 14: ...implemented into XCAP 7 7 2 Triggering Modes The cameras triggering mode can be toggled from the Trigger tab shown in Figure 7 By default the camera will be using the internal trigger which is the Li...

Page 15: ...s the user control over the NUC that is performed live on board the FPGA chip in the camera The Ninox 1280 offers a 3 point NUC offset gain dark current and a bad pixel correction XCAP gives the optio...

Page 16: ...ta in the ROI is captured from the sensor it is fed directly to an Accumulator At the end of frame the Accumulator is divided to give a true average The user can adjust the percentage they want to tak...

Page 17: ...be selected from the Auto ROI tab By default the whole pixel array will be selected for this 1280x1024 as shown in Figure 11 Figure 10 ALC Tuning Figure 11 Auto ROI All controls to tune the ALC to fit...

Page 18: ...ture In Figure 12 you can see that the ROI is 146x146 and is active over the carpet of the floor which is setting a good exposure time for the carpet region However the suitcase is very dark and under...

Page 19: ...te Code Gives the date that the camera was built ADC DAC Calibration Values These are calibration values that are used to set the TEC set point and read back the sensor and PCB temperatures They are n...

Page 20: ...tates can be recalled at any time by using the recall buttons The overall settings file can then be saved and loaded in this tab also Three preset states is the maximum number that can be saved in a s...

Page 21: ...In the contrast modification box that can be seen from Figure 18 select Stretch Contrast Histogram Percentile Endpoints and click preview The contrast modification will now be applied over the live i...

Page 22: ...22 CORPORATE HEADQUARTERS Raptor Photonics LTD Willowbank Business Park Larne Co Antrim BT40 2SF Northern Ireland PH 44 2828 270141 www raptorphotonics com...

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