Re: [Elphel-support] 答复: 答复: sync stereo with lidar
Hi, Olga will send you a quote. Meanwhile, you can test your USB GPS. Plug it in the "eSATA+USB" port ( https://wiki.elphel.com/wiki/File:NC393-CS_marked_ports.jpeg) Then to check if it's working: a. $ ssh root@192.168.0.9 elphel393~# dmesg | grep Garmin > [ 47.236566] usb 1-1.4: new full-speed USB device number 3 using ci_hdrc > [ 47.398450] garmin_gps 1-1.4:1.0: Garmin GPS usb/tty converter detected > [ 47.405759] usb 1-1.4: Garmin GPS usb/tty converter now attached to > ttyUSB0 b. 192.168.0.9:2323/meta will have GPS related tags: > ... > "2" > "2018:05:07 22:29:14.00" > "-111.885652" > "40.780143" > "1378.20" > ... If b. works then camera images are geotagged. Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc. ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] 答复: 答复: sync stereo with lidar
quotation of following items: 103696 103695 ADIS-16405 10398x2 And please tell us how to use those parts with our nc393 camera. Thanks. Tao Zhang 发件人: Tao Zhang 发送时间: 5月10日星期四 08:35 主题: Re: [Elphel-support] 答复: 答复: sync stereo with lidar 收件人: Oleg 抄送: Winston Zhang, Qun Gu, David Zhang, elphel support-list so we need to buy a 103696 board. after we have the board, we need to open the shell to connect to j8 and j9，but then we will not be able to close the shell，right? can you give an instructions of how to connect that board to 10393 camera. And can you give a quotation of this board plus imu board and a ADI 1xx40 imu? Thanks Tao Zhang 发件人: Oleg 发送时间: 5月9日星期三 00:36 主题: Re: [Elphel-support] 答复: 答复: sync stereo with lidar 收件人: Tao Zhang 抄送: Winston Zhang, Qun Gu, David Zhang, elphel support-list Hello, Did you mean this question? We have Garmin GPS 18x 5Hz GPS receiver bought from you. How should we connect GPS to stereo camera? Shall we have a 103696 board? But I can not find how to connect it to 10393 camera on 103696 introduction page (-https://wiki.elphel.com/wiki/103696). For 10393 you should have 10389 board (https://wiki.elphel.com/wiki/10389) Garmin GPS 18x 5Hz GPS - is it serial? or usb? If usb then use a eSATA+USB port or micro usb port If serial then you need to have 103696 - 103696 is connected to J8 or J9 ports of 10389 with 10-contact flat cable. Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc. ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] 答复: 答复: sync stereo with lidar
Hi, so we need to buy a 103696 board. after we have the board, we need to open > the shell to connect to j8 and j9，but then we will not be able to close the > shell，right? can you give an instructions of how to connect that board to > 10393 camera. No shell. J8 and J9 are physical connectors - please, check with PCB schematics - https://wiki.elphel.com/wiki/10389 - there's link to 10389b.pdf. Or inspect the 10389 board you have - they are in the 'front' on the same side as SSD. Connect: GPS receiver > 103696 > 10389, then boot the camera and it's supposed to work. Could you send a picture of the connector on the cable end of your GPS receiver? Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc. ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] 答复: 答复: sync stereo with lidar
so we need to buy a 103696 board. after we have the board, we need to open the shell to connect to j8 and j9，but then we will not be able to close the shell，right? can you give an instructions of how to connect that board to 10393 camera. And can you give a quotation of this board plus imu board and a ADI 1xx40 imu? Thanks Tao Zhang 发件人: Oleg 发送时间: 5月9日星期三 00:36 主题: Re: [Elphel-support] 答复: 答复: sync stereo with lidar 收件人: Tao Zhang 抄送: Winston Zhang, Qun Gu, David Zhang, elphel support-list Hello, Did you mean this question? We have Garmin GPS 18x 5Hz GPS receiver bought from you. How should we connect GPS to stereo camera? Shall we have a 103696 board? But I can not find how to connect it to 10393 camera on 103696 introduction page (-https://wiki.elphel.com/wiki/103696). For 10393 you should have 10389 board (https://wiki.elphel.com/wiki/10389) Garmin GPS 18x 5Hz GPS - is it serial? or usb? If usb then use a eSATA+USB port or micro usb port If serial then you need to have 103696 - 103696 is connected to J8 or J9 ports of 10389 with 10-contact flat cable. Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc. ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] 答复: 答复: sync stereo with lidar
Hello, Did you mean this question? > We have Garmin GPS 18x 5Hz GPS receiver bought from you. How should we > connect GPS to stereo camera? Shall we have a 103696 board? But I can not > find how to connect it to 10393 camera on 103696 introduction page (- > https://wiki.elphel.com/wiki/103696). For 10393 you should have 10389 board (https://wiki.elphel.com/wiki/10389) Garmin GPS 18x 5Hz GPS - is it serial? or usb? If usb then use a eSATA+USB port or micro usb port If serial then you need to have 103696 - 103696 is connected to J8 or J9 ports of 10389 with 10-contact flat cable. Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc. ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] 答复: 答复: sync stereo with lidar
Hello Tao,
I'll try to reproduce your issue. Can you describe the full sequence how you
were installing ImageJ plugin, what version of the operating system you have.
Andrey
On Mon, 19 Mar 2018 19:26:13 -0700 Tao
Zhangtao.zh...@blacksesame.com.cn wrote
Hi Andrey,
We have tried many times to bring up your ImageJ plugin but failed. Can you
help us solve this issue. We now blocked by it. Thanks!
Tao Zhang
章 涛
发件人: Allen Yin
发送时间: 2018年3月13日 11:15
收件人: Elphel Support support-list@support.elphel.com
抄送: Winston Zhang winston.zh...@blacksesame.com.cn; Tao Zhang
tao.zh...@blacksesame.com.cn; Qun Gu qun...@blacksesame.com;
Pioneer Li pioneer...@blacksesame.com.cn
主题: 答复: sync stereo with lidar
Hi Andrey,
When I setup the ImageJ plugin develop environment, I meet “cannot find
Aberration_Calibration” issue
Attached is some configuration of eclipse, could you please help me to solve
it.
1. “1.jpg” and “2.jpg” are the eclipse.ini, is this right?
2. “3.jpg” is the run configuration
Thanks,
Allen Yin
发件人: Elphel Support support-list@support.elphel.com
发送时间: 2018年3月10日, 星期六 0:53
收件人: Allen Yin allen@blacksesame.com.cn; Elphel List
support-list@support.elphel.com
抄送: Winston Zhang winston.zh...@blacksesame.com.cn; Tao Zhang
tao.zh...@blacksesame.com.cn; Qun Gu qun...@blacksesame.com;
Pioneer Li pioneer...@blacksesame.com.cn
主题: Re: [Elphel-support] 答复: 答复: 答复: 答复: 答复: 答复: sync stereo with lidar
Hello Allen,
What exactly problems do you have with ImageJ? The code you need is in one
file, here is the method
https://git.elphel.com/Elphel/imagej-elphel/blob/master/src/main/java/JP46_Reader_camera.java#L415
You see, there are several programs to convert JP4 (Google created their own
that we do not have access to), and ourselves we use the ImageJ version, so it
is the most current. Over the years we added more data to Exif (mostly to
MakerNote field), and the ImageJ version opens current as well as older
versions (conditions like if (MakerNote.length=14) {...)
Boolean COMPOSITE marks composite frames as in Eyesis4pi - the single image
contains 3 vertically merged individual images).
I would still recommend to install ImageJ (we can try to help with specific
problems), and then use it as a reference for you code.
Andrey
On Fri, 09 Mar 2018 00:54:11 -0800 Allen Yin
allen@blacksesame.com.cn wrote
Hi Andrey,
If I want to get gamma conversion parameters from EXIF data , can I use
“identify” command in Linux? Or I can only use ImageJ plugin.
I try to use ImageJ and plugin, it’s difficult to setup the environment.
Attached is EXIF data get by “identify”, how to get the gamma value?
Thanks,
Allen Yin
发件人: Elphel Support support-list@support.elphel.com
发送时间: 2018年3月8日, 星期四 10:37
收件人: Winston Zhang winston.zh...@blacksesame.com.cn
抄送: Elphel Sales | Olga Filippova sa...@elphel.com; Tao Zhang
tao.zh...@blacksesame.com.cn; Qun Gu qun...@blacksesame.com;
Pioneer Li pioneer...@blacksesame.com.cn; Allen Yin
allen@blacksesame.com.cn
主题: Re: 答复: 答复: [Elphel-support] 答复: 答复: 答复: sync stereo with lidar
Hello Winston,
Tomorrow Oleg will try to reproduce your settings - so far we did not have
such problems.
BTW, you can set same parameters on multiple ports simultaneously, using
"Broadcast Mask" (hex number 0..f)
Port 0: 1
port 1 - 2
port 2 - 4
port 3 - 8,
So broadcast mask 3 will set the same mode on ports 0 and 1.
About bits I tried to explain in the previous messages and the "How many
bits..." in the article.
Sensor provides 12 bits, and each bit is important in the shadows. But not in
the bright light because of the shot noise that is caused just by the fact that
each pixel can store only integer number of electrons. And so while all bits
are important, there are not 4096 meaningful levels for each pixel, but
significantly less (see "How many bits..."). Gamma conversion uses non-linear
scale to represent pixel values with steps proportional to the shot noise
(steps are smaller). The gamma conversion parameters are saved in the Exif
header of the JP4 file, and if you open files with ImageJ plugin, it takes care
of the Exif data and restores linear data proportional to the pixel raw values,
then you can save it as 32-bit Tiff file.
Andrey
Hi, Andrey
I met a new question. I set ‘Color’ parameter with the five(it could get
the jp4 format image)on one camera, and this camera image format was converted.
But when I set the other one, this camera image format was not converted.
Please help me test for it.
Another question
What is the raw jp4 format image with 100% compression bit wide? I read
it and the result show the bit wide is uint8. But you web shows that the bit
wide is 12bit.
Best Regrad!
Yicheng-Zhang
Email: winston.zh...@blacksesame.com.cn
Re: [Elphel-support] 答复: 答复: sync stereo with lidar
Hello Winston, Do you need information inside camera or for post-processing on a host PC? Sensor has 12 bits, and using JP4 format (https://wiki.elphel.com/wiki/JP4) you can restore image data with the error less than the pixel shot noise Here is an article explaining why it is so: http://linuxdevices.io/how-many-bits-are-really-needed-in-the-image-pixels/ With ImageJ plugin you can convert JP4 file to 32-bit TIFF Andrey On Thu, 01 Mar 2018 17:17:14 -0800 Winston Zhangwinston.zh...@blacksesame.com.cn wrote Hello, Does this camera image pixel have 10 bit of the single channel? And how can I get it? Thank you. Best Regrad! Yicheng-Zhang Email: winston.zh...@blacksesame.com.cn Teil:18516291005 Addr: 707 room, 7th floor, building 4th, No.1761, Zhangdong road, Pudong area 发件人: Andrey Filippov [mailto:and...@elphel.com] 发送时间: 2018年2月1日 星期四 13:49 收件人: Tao Zhang tao.zh...@blacksesame.com.cn 抄送: Elphel Support support-list@support.elphel.com; Elphel Sales | Olga Filippova sa...@elphel.com; Winston Zhang winston.zh...@blacksesame.com.cn; Qun Gu qun...@blacksesame.com; Pioneer Li pioneer...@blacksesame.com.cn 主题: Re: 答复: [Elphel-support] sync stereo with lidar Tao, USB GPS does not have 1pps signal (only serial has), precise synchronization is not possible that way. GPS time is available in each frame Exif header data - recorded on internal SSD or sent over the network. The high resolution time stamps (1 microsecond step) are also provided with each image, but they use internal camera clock, not the GPS. This is why for precise synchronization you need to use event logger- it records events and timestamps them using the same clock. If you had serial GPS with https://wiki.elphel.com/wiki/103696 - you would still need to use event logger - with serial GPS there will be 1 PPS precise GPS events timestamped with camera internal clock, and the images timestamped wit the same clock - that provides absolute calibration for the camera internal clock. Without serial GPS you may use pulses from the LIDAR (it is possible to provide LIDAR pulse number over the Ethernet in addition to the precise time over the sync cable) Andrey On Wed, 31 Jan 2018 18:12:00 -0800 Tao Zhangtao.zh...@blacksesame.com.cn wrote Hi Andrey, We prefer to use GPS to synchronize stereo with lidar. Where do those images that contain timestamp store in internal disk? Can we get it from ethernet continuously? Tao Zhang 章 涛 发件人: Andrey Filippov [mailto:and...@elphel.com] 发送时间: 2018年2月1日 1:52 收件人: Tao Zhang tao.zh...@blacksesame.com.cn 抄送: Elphel Support support-list@support.elphel.com; Elphel Sales | Olga Filippova sa...@elphel.com; Winston Zhang winston.zh...@blacksesame.com.cn; Qun Gu qun...@blacksesame.com; Pioneer Li pioneer...@blacksesame.com.cn 主题: Re: [Elphel-support] sync stereo with lidar Hi Tao, There are several ways how to do that: One method would be be to get camera sync pulses for each frame and use external electronics to match with the LIDAR. Another is to provide pulses from the LIDAR to the camera and record them with in-camera FPGA logger (https://wiki.elphel.com/wiki/Event_logger), together with the camera frames. In this case the camera will record 2 types of events: - image frames with the frame number, frame timestamp that will be recorded in each frame header as Exif. - external pulse Each of the two types of events will have a logger timestamp (with microsecond resolution). Logger can also record GPS timestamps (for serial GPS only and 103696 board -https://wiki.elphel.com/wiki/103696) and IMU (https://wiki.elphel.com/wiki/103695), in your case there are just 2 types listed above. Both output (+5V pulses) and input (3.3V..5.0V) are available through the 2.5mm audio connector (marked "sync" https://wiki.elphel.com/images/0/0f/NC393-CS_marked_ports.jpeg ), here is the pinout and description: https://wiki.elphel.com/wiki/103891 . Andrey On Wed, 31 Jan 2018 04:19:04 -0800 Tao Zhangtao.zh...@blacksesame.com.cn wrote Hi Andrey, We are going to use stereo with lidar. We need to sync stereo frames with lidar point cloud. Do you have any suggestions on how to do that? Thanks. Tao Zhang 章 涛 ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
