Author Topic: Image difference between Infiray Xtherm and Thermview Mobile Apps  (Read 1003 times)

0 Members and 1 Guest are viewing this topic.

Offline publioelonTopic starter

  • Contributor
  • Posts: 16
  • Country: br
Image difference between Infiray Xtherm and Thermview Mobile Apps
« on: September 21, 2021, 02:08:51 am »
Greetings, I have purchased a T3C camera from Infiray.


Thermal Resolution: 388x288
Pixel Pitch: 17 um.
Frame Rate: 25Hz.
NETD: 40mK at 25ºC
MRTD: 500mK at 25ºC



The device itself was indicated by the sellers for my purpose that is temperature change detection in the thermal image itself.


I used the Infiray's Xtherm Mobile App and got the following image:


However, I downloaded the Thermview app and got a different Image:


I would like to ask, why are the pixel colors brighter for the Thermview app (last image) compared to the app given by the Infiray store?



« Last Edit: September 23, 2021, 08:25:53 am by publioelon »
 

Offline Vipitis

  • Frequent Contributor
  • **
  • Posts: 867
  • Country: de
  • aspiring thermal photography enthusiast
Re: Image difference between Infiray Xtherm and Thermview Mobile Apps
« Reply #1 on: September 21, 2021, 08:01:39 am »
it's different palettes and different histogram equalisation mappings.

The imager produces just a monochrome image which doesn't have a lot of contrast. But stretching the signal out to fill the 8bits of greyscale and using a fake color palette gives you results that show the difference in signal more.
 

Offline publioelonTopic starter

  • Contributor
  • Posts: 16
  • Country: br
Re: Image difference between Infiray Xtherm and Thermview Mobile Apps
« Reply #2 on: September 21, 2021, 07:40:58 pm »
it's different palettes and different histogram equalisation mappings.

The imager produces just a monochrome image which doesn't have a lot of contrast. But stretching the signal out to fill the 8bits of greyscale and using a fake color palette gives you results that show the difference in signal more.
I thought it had something to do with the shutter compensation, whereas initially the first image didn't have take into consideration the shutter compensation.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf