Radiometric data - live streaming - Page 1
Forum section: electronics / general

author: danabee3
author_rank: Newbie
timestamp: May 31, 2017, 12:11:01 pm
content: Hi all,I'm working on a student project that involves fire detection from a drone. We were looking into some thermal cameras that we can use but we ran into one big problem - most cameras cannot stream their radiometric data in real time, it is saved on an on-board USB. I was wondering if any of you are familiar with small thermal cameras that can stream thermal data in real time? ( and under ~$3,000)the other option is just to use image processing to the grey-scale image, but i think that will be much more complicated..Thanks in advance

author: Bud
author_rank: Super Contributor
timestamp: May 31, 2017, 12:33:48 pm
content: There was a thread some time back where we did this with the Flir E4 but that involved a hack to libusb library in Linux. Search for "radiometric streaming" and you should find it. At the time that was only worked in Linux because the hack could not be applied to Windows version of libusb.

author: danabee3
author_rank: Newbie
timestamp: May 31, 2017, 12:51:38 pm
content: Thanks, yeah, I saw that thread..I was wondering if maybe theres a hack that can be applied to a smaller camera like the Vue or Duo (for a drone)

author: Chanc3
author_rank: Frequent Contributor
timestamp: May 31, 2017, 05:15:33 pm
content: A possible solution would be to use a camera with a gigE/network port. You could then create a wireless bridge. Would work with some FLIR cameras.Sent from my ONE A2003 using Tapatalk

author: Bill W
author_rank: Super Contributor
timestamp: May 31, 2017, 07:28:08 pm
content: It will be a challenge, as radiometric data is going to be around 20x the volume as image data.(Radiometric 16 bits uncompressed, 'video' jpg 8 bit Y and colour at only 1/4 resolution )Do you need the whole range of data ? I'm thinking a custom colour lookup table might do the job if all you need is >20, >25, >30, >50 or similar.Bill

author: babysitter
author_rank: Frequent Contributor
timestamp: June 01, 2017, 11:24:33 am
content: How about a single- or 4-line thermal sensor like those nice melexis parts for cheap and do the line movement by flight movement?(Those pesky orbiting weather satellites even did it with one pixel and a rotating mirror for the line, even encoding the radiation level to a audio signal...)BRHendrik

author: tomas123
author_rank: Frequent Contributor
timestamp: June 01, 2017, 04:58:58 pm
content: Quote from: danabee3 on May 31, 2017, 12:51:38 pmDo you know our Flir One thread?Quote from: cynfab on April 24, 2016, 10:39:40 pm

author: danabee3
author_rank: Newbie
timestamp: June 01, 2017, 06:35:15 pm
content: I see..yes, I was thinking of just using the grey-scale image and doing some image processing, but not I'm not quite familiar with image processing so I though having radiometric data will simplify things - I see that's not the case :/

author: danabee3
author_rank: Newbie
timestamp: June 01, 2017, 06:37:00 pm
content: Quote from: babysitter on June 01, 2017, 11:24:33 amI think the problem with those sensors are their low resolution - I'm looking to detect a 'hot spot' from a height of around 50 meters

author: netchuck
author_rank: Newbie
timestamp: June 03, 2017, 10:24:49 pm
content: Take a look at the Boson camera core. It has 14-bit output that can be sent over USB, real time.Sent from my iPhone using Tapatalk