Azure Kinect DK
A Microsoft developer kit and peripheral device with advanced artificial intelligence sensors for sophisticated computer vision and speech models.
214 questions
Manual Exposure when Synchronizing Multiple Azure Kinects
asked 2023-01-09T12:57:17.623+00:00
Huai Tien
1
Reputation point
Manual exposure when synchronizing multiple Azure Kinects will not produce bright and clear images, but extremely dark ones. How can I solve this problem? I've tried to set manual exposure value from -11 to 1.
{count} votes
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LeelaRajeshSayana-MSFT 776 Reputation points Microsoft Employee2023-01-09T23:50:44.793+00:00 Hi @Huai Tien , Welcome to Microsoft forum! Thanks for your query. Community SME's on this topic or our team will review your scenario and circle back at the possible earliest time.
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Huai Tien 1 Reputation point
2023-01-10T03:19:16.227+00:00 Thanks!
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LeelaRajeshSayana-MSFT 776 Reputation points Microsoft Employee
2023-01-10T22:09:42.537+00:00 Hi @Huai Tien , I am checking to see if you have also accounted for Avoiding interference between multiple depth cameras in addition to adjusting the manual exposure.
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Huai Tien 1 Reputation point
2023-01-11T09:08:53.1566667+00:00 Hi @LeelaRajeshSayana-MSFT .Yes, I've set depth_delay_off_color_usec to -80 (subordinate) and 80 (master). Thanks for your reply.
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LeelaRajeshSayana-MSFT 776 Reputation points Microsoft Employee
2023-01-12T23:15:38.58+00:00 Hi @Huai Tien thank you for the confirmation. We are working on this issue internally. I will update the thread as soon as we have more information on this. Please watch out for updates on this thread in the coming days.
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LeelaRajeshSayana-MSFT 776 Reputation points Microsoft Employee
2023-01-17T22:11:36.3566667+00:00 Hi @Huai Tien, Greetings! I have an update from the team on this issue. Here is the feedback I got:
- k4arecorder uses -11 to 1 as the range for exposure, but if you look into the code it does a conversion to an actual microsecond value for exposure. Link to GitHub repository
- The absoluteExposureValue passed in has to be the exposure time in microseconds, not a value between -11 and 1
Can you provide more details on how you have tried to adjust the manual exposure value. I appreciate it if you can try to set the property in microseconds and see if that produces better image results.
Please keep us posted on your findings.
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Huai Tien 1 Reputation point
2023-01-18T06:59:37.46+00:00 OK, @LeelaRajeshSayana-MSFT . For convenience, I use **Azure Kinect recorder **to test it. And the result is the same. I appreciate it if you can have a try and see how it works. Thank you so much.
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LeelaRajeshSayana-MSFT 776 Reputation points Microsoft Employee
2023-01-18T21:54:19.4233333+00:00 Hi @Huai Tien Thank you for your response. Azure Kinect recorder uses the
k4arecorderto capture videos. Please find the Record files samples provided in the article which uses k4arecorder. Here are the examples provided in the article.I appreciate it if you can provide some details on how you are setting the manual exposure parameter.
Thank you.
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Huai Tien 1 Reputation point
2023-01-19T06:22:59.6+00:00 Hi, @LeelaRajeshSayana-MSFT . I used these commands to get record files.
k4arecorder.exe --device 1 -l 8 --depth-delay -80 -r 30 --imu OFF --external-sync Subordinate -e -7 sub.mkv
k4arecorder.exe --device 0 -l 8 --depth-delay 80 -r 30 --imu OFF --external-sync Master -e -7 master.mkv
Thanks!
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LeelaRajeshSayana-MSFT 776 Reputation points Microsoft Employee
2023-01-20T19:31:32.3033333+00:00 Hi @Huai Tien, Thank you for your response. I am working on this internally. Please allow me sometime to get back to you. Kindly watch this thread for updates next week.
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