16 Questions 63 Answers 0 Followers
Questions related from Ahmed Ghodieh
is it possible to use more than three bands in image segmentation? I carried out image segmentation but I feel that the result is not satisfactory. most area of the image represented only one...
10 October 2019 5,372 8 View
I have a landsat 8 image from which LST is estimated. I need to make correlation between LST and land cover types.
04 April 2019 4,706 6 View
I work on a project for exploring urban expansion trends in Palestine between the years 1997 and 2016. I found Landsat 8 data for the year 2016, but i did not find image data for the year 1997. if...
06 June 2018 5,453 4 View
I am trying to extract built up from a series of Landsat images in order to understand urban expansion trends in the region. The study area includes large areas of rocky lands, and they are highly...
05 May 2018 2,696 5 View
I am working on detecting indicators of climate change using a series of landsat data. I need to use a proper method to prepare land surface temperature maps for 30 years data.
02 February 2018 4,247 14 View
I have a student who works on using remote sensing for detecting diseases of agricultural plants. He frequently asks: I am unable to differentiate between vegetation stress and vegetation disease.
10 October 2017 1,911 0 View
In ENVI there are two types ofastmospheric correction: FLAASH and QUICK. What is the difference between the two?
03 March 2017 530 2 View
In Landsat 8 images we notice that DN values range is 0-65000, changing the range to 0-255 may make it easier to read.
02 February 2017 7,298 3 View
when we watch films describing people in ancient times, we notice that those people were tall, strong and big. On the other hand, we notice that people these days are relatively smaller and...
04 April 2016 1,650 0 View
There are many attempts to use remote sensing techniques in medical purposes such as the delineation of brain tumor spreading. How can we do that job efficiently?
02 February 2014 3,356 2 View
I created NDVI from SPOT XS image using Envi remote sensing software. When the image is opened in Arcmap, the value field became spectral values ranges from 0 to 255. I need the original NDVI...
11 November 2013 7,933 15 View
I have NDVI tiff file in Arcmap, but no attribute table is associeted with the spatial data. I need the value of each pixel in attribute table, in order to produce a thematic map.
11 November 2013 6,333 4 View
I have an NDVI tiff file in Arcmap, and I need to extract the area inside the borders of the study area. I tried (extract by mask), but it did not work. (it is a tiff file, 32bits, single band).
11 November 2013 4,496 2 View
I need to give weights to variables??
10 October 2013 2,448 1 View
Is it possible to get an accurate estimation of the audience watching a football game on the ground using remote sensing data?
03 March 2013 2,631 2 View
This question is for better municipality water resources management.
10 October 2012 2,276 6 View
