Is it wise to change the 16 bit data value of Landsat8 to 8 bit data value?

More Ahmed Ghodieh's questions See All

How can image segmentation help in improving classification accuracy?

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...

09 October 2019 5,264 8 View

How can I spatially correlate land cover with land surface temperature?

I have a landsat 8 image from which LST is estimated. I need to make correlation between LST and land cover types.

03 April 2019 4,586 6 View

I searched for an image of Landsat TM for the Palestine and Jordan for the year 1997, but I did not find any!! if there is a way to get these data?

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...

05 June 2018 5,340 4 View

How can I improve image classification accuracy?

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...

04 May 2018 2,468 5 View

What is the best method for land surface temperature mapping using satellite data?

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.

01 February 2018 4,133 14 View

What is the difference between vegetation stress and vegetation diseases?

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.

09 October 2017 1,759 0 View

What is the difference between flaash atmospheric correction and quick atmospheric correction in ENVI?

In ENVI there are two types ofastmospheric correction: FLAASH and QUICK. What is the difference between the two?

02 March 2017 353 2 View

Are people becoming shorter and smaller by time? if yes, why?

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...

03 April 2016 1,530 0 View

What are the best wavebands for brain tumor delineation?

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?

01 February 2014 3,241 2 View

How can I create an attribute table for an NDVI TIFF file, inorder to classify the it in categories?

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.

10 November 2013 6,154 4 View

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

Which SAR dataset to use for generating coherency matrix and performing target decomposition (Description) ?

Working on chandrayaan-2 DFSAR data, there are three datasets available: 1) Slant range image data product: The slant range complex image file. Each pixel is represented by two 4-byte floating...

02 March 2021 8,481 3 View

How UAV or drone can be beneficial to better estimate crop yield?

As we know, crop yield estimation has been done traditionally with farmer's expert knowledge, deductive sampling in representative areas, and remote sensing with satellite imagery. Farmer's Expert...

01 March 2021 3,468 3 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

Which bacteria are suitable for quorum sensing screening?

I want to find a quorum sensing inhibitor from plant extracts. Klebsiella pneumoniae, Moraxella catarrhalis, Staphylococcus aureus, and Streptococcus pneumoniae. I looked for these strains...

01 March 2021 7,675 3 View

No title

I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

How Can I clain a removal of a co-author?

I would like to make a correction in a co-author in your paper which is wrong. This name is also in other papers of Kenton Ko. Zey Ko is not a Co-author . The correct name is Zdenka...

24 February 2021 3,476 4 View

What is your preference for journals for publishing in the field of Hyperspectral Imaging or Remote sensing?

I believe that we need to share our experience in publishing in the field of Hyperspectral Imaging or remote sensing? What is the best journal that you publish with? What is the worst experience...

23 February 2021 3,411 4 View

How does the injection volume impact LLOQ and ULOQ in regression analysis (LC-MSMS)?

Hello, I have run into an issue that has sparkled a debate at work: is the LLOQ/ULOQ impacted by injection volume under the following circumstances: 1) Same dilution factor of all samples 2)...

23 February 2021 9,159 3 View

Amit Ghosh

I think, it is not! The finer the bit depth, more sensitive it is to detecting small

differences in reflected or emitted energy. Therefore, 16 bit data contains more information than the 8 bit data. I would suggest to convert the DN values to ToA reflect ance quantities (in float) for the purpose of reading and analysis.

Vladimir Filipovich

Hi, Ahmed

If you are in their studies will not be using the spectral brightness (eg, classification of images and the exact identification of differences in land cover), then you do not need to use the DN values range 0-65000.

It all depends on the goals and objectives of your research

Best regards

Ahmed Ghodieh

I actually intend to make image classification, and this radiometric resolution is very high and does not go in parallel with the spectral resolution of Landsat8?