Author Topic: Hti HT-301 384 x 288  (Read 44459 times)

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Offline zrq

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Re: Hti HT-301 384 x 288
« Reply #100 on: January 16, 2020, 06:03:01 am »
This app, go better ?

https://play.google.com/store/apps/details?id=com.thermappplus&hl=it
I doubt whether this app can work with HTI or Xtherm dongles, since it's specifically designed for Therm-App cameras
 

Offline alex871

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Re: Hti HT-301 384 x 288
« Reply #101 on: January 16, 2020, 05:52:14 pm »
to risk throwing 6 euros into the bucket, you can do it

 ::)
 

Offline NinetySix

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Re: Hti HT-301 384 x 288
« Reply #102 on: January 16, 2020, 07:15:16 pm »
It didn't work on my partner's phone, Huawei mate 20 pro. Refunded.
 

Offline ixfd64

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Re: Hti HT-301 384 x 288
« Reply #103 on: January 17, 2020, 12:15:12 am »
How does the quality of the HTI-19 compare to that of similar cameras from FLIR or Fluke?

https://amazon.com/Resolution-Infrared-Included-Lightweight-Comfortable/dp/B07MGZP12J

I'm aware HTI isn't a brand name, but the fact that the costs are an order of magnitude lower seems almost too good to be true.
 
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Offline Vipitis

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Re: Hti HT-301 384 x 288
« Reply #104 on: January 17, 2020, 12:24:49 am »
for all we know, this one looks very suspiciously close to the Seek core and lens. Quality can mean very different things but image quality wise a E4 is way ahead.
 

Offline NinetySix

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Re: Hti HT-301 384 x 288
« Reply #105 on: January 17, 2020, 09:08:58 am »
Sorry, I was referring to thermapp plus not working with the 301. No trouble with the the HTI app downloaded directly from the HTI website (instead of from the Play store) on both my partner's mate 20 pro or my pixel 3a xl, both running Android 10. The play store version is only good for Android 9, and it does warn you of that, which is nice I guess.
 

Offline ixfd64

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Re: Hti HT-301 384 x 288
« Reply #106 on: January 17, 2020, 11:00:07 pm »
for all we know, this one looks very suspiciously close to the Seek core and lens. Quality can mean very different things but image quality wise a E4 is way ahead.

I found some sample images online, and the FLIR images are indeed much clearer. You get what your pay for.
 
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Offline NinetySix

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Re: Hti HT-301 384 x 288
« Reply #107 on: January 23, 2020, 06:26:04 am »
I'm gonna have to disagree with that one. Yes they have done a good job implementing msx with the visible light camera, but there sure ain't much detail when it's set to thermal only. 80x60 resolution is just not in the same league as the hti-301, and call me a purist, but I'm just not a fan of visible/thermal composite images... Especially when it's dark ;D

If it's a successfully hacked E4 with 320x240 (or whatever they can get up to) resolution then maybe, but it's not really an E4 any more then :popcorn:

A friend of mine has a flir E75, and though we haven't done a side by side comparison, he was blown away by the picture on the ht301, especially the frame rate.... Even though his does 30hz  :o doesn't have to manually focus it either, and it can likely handle being dropped too!

This calls for a side by side shootout  8) once I fix the wonky usb-c plug on my 301 that is..... Anybody else having trouble with it falling out of their phone, or the connection dropping out? My charge port is brand new, and it's definitely not dirt causing it.
 
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Offline Conure

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Re: Hti HT-301 384 x 288
« Reply #108 on: January 23, 2020, 07:38:43 pm »
How is the ability to lock temperature ranges? On TE-Q1 it's very bad. The color keeps changing widely.
 
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Online dunkemhigh

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Re: Hti HT-301 384 x 288
« Reply #109 on: January 23, 2020, 08:31:29 pm »
Quote
On TE-Q1 it's very bad. The color keeps changing widely.

Are you sure you mean the TE-Q1? The Android app allows locking of the range, and once locked the colours don't change. It's not obvious how to put the lock on or how to change the range having done so, but you can do it :)
 

Offline Conure

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Re: Hti HT-301 384 x 288
« Reply #110 on: January 23, 2020, 09:10:07 pm »
Quote
On TE-Q1 it's very bad. The color keeps changing widely.

Are you sure you mean the TE-Q1? The Android app allows locking of the range, and once locked the colours don't change. It's not obvious how to put the lock on or how to change the range having done so, but you can do it :)
Yes. Back in some other thread I had some other guy agreeing with me. I lock the ranges but as I move the camera around the colors change.
 
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Online dunkemhigh

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Re: Hti HT-301 384 x 288
« Reply #111 on: January 23, 2020, 09:14:40 pm »
OK. My app is pretty old. I'll make sure not to update it :)
 

Offline alex871

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Re: Hti HT-301 384 x 288
« Reply #112 on: January 23, 2020, 11:02:18 pm »
Ht-301 locking of the range, and once locked the colours it change very well



 

Offline alex871

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Re: Hti HT-301 384 x 288
« Reply #113 on: January 23, 2020, 11:04:09 pm »
sorry but ht-301 saves radiometric images for post processing?  it would be too good....
 
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Offline NinetySix

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Re: Hti HT-301 384 x 288
« Reply #114 on: January 23, 2020, 11:08:03 pm »
In ThermViewer you can configure it to save temperature data, I think it saves it as a .CSV file. Annoyingly, it creates a new folder for each image and temperature data file, which makes for a huge mess of folders in the Google photos app |O
 
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Offline alex871

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Re: Hti HT-301 384 x 288
« Reply #115 on: January 23, 2020, 11:23:56 pm »
I have seen but the files are not .csv but one .json and the other .txt then there is the .png image file
How are they visualized in post production for processing?
Thanks so much
 

Offline alex871

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Re: Hti HT-301 384 x 288
« Reply #116 on: January 25, 2020, 03:16:02 am »
« Last Edit: January 25, 2020, 03:36:52 am by alex871 »
 

Offline NinetySix

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Re: Hti HT-301 384 x 288
« Reply #117 on: January 25, 2020, 04:49:15 am »
I think Thermovision_JoeC might be able to analyse the data. The .txt file contains temperature values like "3072 2983 2975 3004" for 30.72, 29.83, 29.75, 30.04 deg C. I assume that's the value for each and every pixel
 
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Offline alex871

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Re: Hti HT-301 384 x 288
« Reply #118 on: January 25, 2020, 11:56:35 am »
I think Thermovision_JoeC might be able to analyse the data. The .txt file contains temperature values like "3072 2983 2975 3004" for 30.72, 29.83, 29.75, 30.04 deg C. I assume that's the value for each and every pixel


I've tried with Thermovision_JoeC now but can't open the txt file
 

Offline Bill W

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Re: Hti HT-301 384 x 288
« Reply #119 on: January 25, 2020, 01:07:30 pm »
If the file coding is that simple, then a bit of file manipulation (hex editor, spreadsheet or even NotePad++)  and then Image J to display.  No software authoring needed.

Image J can import a 'text image' where it gets a text file with each pixel a text value.


Bill
 
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Offline RBsonic

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Re: Hti HT-301 384 x 288
« Reply #120 on: January 25, 2020, 03:06:24 pm »
Some photos from inside

[attach=1]
 
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Offline RBsonic

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Re: Hti HT-301 384 x 288
« Reply #121 on: January 25, 2020, 03:07:10 pm »
[attach=1]
 

Offline RBsonic

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Re: Hti HT-301 384 x 288
« Reply #122 on: January 25, 2020, 03:09:36 pm »
[attach=2]
 

Offline RBsonic

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Re: Hti HT-301 384 x 288
« Reply #123 on: January 25, 2020, 03:10:46 pm »
[attach=1]
 

Offline NinetySix

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Re: Hti HT-301 384 x 288
« Reply #124 on: January 25, 2020, 11:59:50 pm »
Be very careful with the fpc ribbon cable for the USB plug, especially where it is folded 180 degrees then stuffed into a very tight gap between the USB plug PCB and the main board & shutter...

I can only imagine that a hard 180 degrees crease of an fpc ribbon is generally considered poor practise. The copper had snapped at the bend, only the polyimide was holding it together.

After only the 2nd disassembly... The first was due to water ingress (they could have made this camera ip67 with very little effort or added cost!) which had me worried... The camera just wasn't working at all, no click from the shutter no detection of anything by the phone, open it up and rinse it out with IPA, let it dry, reassemble and it works perfectly again... Then the USB plug seemed to be the issue, like constantly disconnecting unless you held the camera firmly against the phone, and eventually not working at all any more.

I've emailed HTI but I guess they are having a week off for lunar new year
« Last Edit: January 26, 2020, 12:01:34 am by NinetySix »
 
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