The following warnings occurred:
Warning [2] Undefined array key "avatartype" - Line: 783 - File: global.php PHP 8.0.30 (Linux)
File Line Function
/global.php 783 errorHandler->error
/showthread.php 26 require_once
Warning [2] Undefined array key "avatartype" - Line: 783 - File: global.php PHP 8.0.30 (Linux)
File Line Function
/global.php 783 errorHandler->error
/showthread.php 26 require_once
Warning [2] Undefined variable $awaitingusers - Line: 34 - File: global.php(844) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/global.php(844) : eval()'d code 34 errorHandler->error
/global.php 844 eval
/showthread.php 26 require_once
Warning [2] Undefined array key "style" - Line: 909 - File: global.php PHP 8.0.30 (Linux)
File Line Function
/global.php 909 errorHandler->error
/showthread.php 26 require_once
Warning [2] Undefined property: MyLanguage::$lang_select_default - Line: 5010 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 5010 errorHandler->error
/global.php 909 build_theme_select
/showthread.php 26 require_once
Warning [2] Undefined array key "additionalgroups" - Line: 7045 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 7045 errorHandler->error
/inc/functions.php 5030 is_member
/global.php 909 build_theme_select
/showthread.php 26 require_once
Warning [2] Undefined array key "mybb" - Line: 1938 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 1938 errorHandler->error
/inc/functions_indicators.php 41 my_set_array_cookie
/showthread.php 629 mark_thread_read
Warning [2] Undefined property: MyLanguage::$ratings_update_error - Line: 5 - File: showthread.php(732) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/showthread.php(732) : eval()'d code 5 errorHandler->error
/showthread.php 732 eval
Warning [2] Undefined array key "additionalgroups" - Line: 7045 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 7045 errorHandler->error
/inc/functions_user.php 837 is_member
/inc/functions_post.php 406 purgespammer_show
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(474) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php(474) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 474 eval
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "canonlyreplyownthreads" - Line: 660 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 660 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showimages" - Line: 741 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 741 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 746 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 746 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "additionalgroups" - Line: 7045 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 7045 errorHandler->error
/inc/functions_user.php 837 is_member
/inc/functions_post.php 406 purgespammer_show
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(474) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php(474) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 474 eval
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "canonlyreplyownthreads" - Line: 660 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 660 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showimages" - Line: 741 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 741 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 746 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 746 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "additionalgroups" - Line: 7045 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 7045 errorHandler->error
/inc/functions_user.php 837 is_member
/inc/functions_post.php 406 purgespammer_show
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(474) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php(474) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 474 eval
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "canonlyreplyownthreads" - Line: 660 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 660 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showimages" - Line: 741 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 741 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 746 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 746 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "additionalgroups" - Line: 7045 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 7045 errorHandler->error
/inc/functions_user.php 837 is_member
/inc/functions_post.php 406 purgespammer_show
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(474) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php(474) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 474 eval
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "canonlyreplyownthreads" - Line: 660 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 660 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showimages" - Line: 741 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 741 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 746 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 746 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "additionalgroups" - Line: 7045 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 7045 errorHandler->error
/inc/functions_user.php 837 is_member
/inc/functions_post.php 406 purgespammer_show
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(474) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php(474) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 474 eval
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "canonlyreplyownthreads" - Line: 660 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 660 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showimages" - Line: 741 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 741 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 746 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 746 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "additionalgroups" - Line: 7045 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 7045 errorHandler->error
/inc/functions_user.php 837 is_member
/inc/functions_post.php 406 purgespammer_show
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(474) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php(474) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 474 eval
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "canonlyreplyownthreads" - Line: 660 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 660 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showimages" - Line: 741 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 741 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 746 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 746 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showimages" - Line: 784 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 784 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "additionalgroups" - Line: 7045 - File: inc/functions.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions.php 7045 errorHandler->error
/inc/functions_user.php 837 is_member
/inc/functions_post.php 406 purgespammer_show
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(474) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php(474) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 474 eval
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "canonlyreplyownthreads" - Line: 660 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 660 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showimages" - Line: 741 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 741 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 746 - File: inc/functions_post.php PHP 8.0.30 (Linux)
File Line Function
/inc/functions_post.php 746 errorHandler->error
/showthread.php 1070 build_postbit
Warning [2] Undefined array key "canonlyviewownthreads" - Line: 1081 - File: showthread.php PHP 8.0.30 (Linux)
File Line Function
/showthread.php 1081 errorHandler->error
Warning [2] Undefined array key "invisible" - Line: 1506 - File: showthread.php PHP 8.0.30 (Linux)
File Line Function
/showthread.php 1506 errorHandler->error
Warning [2] Undefined variable $threadnotesbox - Line: 30 - File: showthread.php(1533) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/showthread.php(1533) : eval()'d code 30 errorHandler->error
/showthread.php 1533 eval
Warning [2] Undefined variable $addremovesubscription - Line: 79 - File: showthread.php(1533) : eval()'d code PHP 8.0.30 (Linux)
File Line Function
/showthread.php(1533) : eval()'d code 79 errorHandler->error
/showthread.php 1533 eval




Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Beyond the eye of the beholder
#1
Are there any readers of this forum who have looked at an excavated site just beyond both ends of the visible spectrum (near IR/UV), using any technique, but especially ground-based?
Reply
#2
I'd upload a picture if I could (Uploading or inserting photos from other locations ends in errors). But it is probably not what you are looking for John. Here is a link:

http://testarea.hdf.me.uk/IMG_2107bXX-rh-bajrfed2.jpg

The photo on left is normal colour, the right is near-infrared - 760nm filter.

The big curving feature is a ditch belonging to a banjo enclosure.
Reply
#3
Very interesting Hamish, I've seen this working with cropmarks where some elements of a site can show up earlier because of the way the vegetations responds. However, I can't see much differerence in what is showing up between your two photos. Did more stuff show up and I am just not seeing it?
Reply
#4
I cannot see much difference either. On cropmark sites Where I have flown a near-infrared camera, in most instances the infrared has not shown up any more information than has been obtainable from the colour spectrum - I have only one example at the moment where infrared on cropmarks was significantly better than colour.
Reply
#5
I was rather hoping that someone may have just popped a UV-pass or near IR filter on their camera and taken pictures in trenches, or over small areas, with the aid of a tripod (because of the long exposures involved) using their normal camera. My impression is that near IR is less useful on exposed soil but near UV may have some potential, especially for fine detail. We will be looking at this more carefully in the near future. I am just waiting for a UV filter for the cheap 808#16D camera, to see if we can improve on exposure times with its standard lens. A conventional UV camera is too expensive and may not be worth the expense, especially in a community context. However, the smaller micro cameras can be fitted with much cheaper UV lenses which are normally used in machine vision applications.

Generally, in the near infra-red, with crop marks and latent crop marks and parch marks, bright sunlight can obscure them, but not always. In sunlight, there is often little difference between the near IR and the red channel taken from the visible spectrum.
Near IR seems to be at its best on short grass in overcast conditions, but this may reflect our limited experience.

Beyond the near-IR, with thermal imaging, everything is about timing and, with thermal crop marks, you even have to consider relative humidity. We have done little thermal work, so far, but with the conditions here in Scotland, we believe that we are more likely to see thermal crop marks than conventional ones....the problem is the timing!
Differential warming and cooling of ground features is less problematic:

[Image: ogilface002.jpg] [Image: ogilface003.jpg] Near IR
l[Image: woodendflir01.jpg] Thermal vertical [Image: woodendflir03.jpg] Thermal
Reply
#6
I await the results of your experiment with interest John. As you say the thermal technique could work in Scottish climate conditions and I would be interested in its potential application to summertime Norway....a small paper in the BAJR technical series outlining the techniques and equipment required would be appreciated if you have time and patience....
With peace and consolation hath dismist, And calm of mind all passion spent...
Reply
#7
Some basic information is here: http://www.armadale.org.uk/phototech.htm but it is beginning to look a little dated.
I will be putting something here: http://www.archaeolandscapes.eu/index.ph...v/417.html but that might be more about flying kites with cameras initially.
Reply


Forum Jump:


Users browsing this thread: 3 Guest(s)