Kanchan Mishra

6 Questions 6 Answers 0 Followers

Questions related from Kanchan Mishra

How to define the threshold (area or pixels) to extract stream network from DEM.

After flow accumulation analysis, what will be the criteria to define the threshold to extract the stream network from DEM? As stream threshold choice will influence the extracted drainage...

28 June 2017 2,658 3 View

Probability distribution function of a raster image ?

I need to generate the PDF of an output raster image. The area is large so as the values. Please help me the method to generate the PDF for values larger than 4 lakhs.

14 July 2016 4,164 4 View

How can I extract the linear features (road and railway network) from Landsat 7 images with spatial resolution of 30 mts ?

I need to extract the road and railway features from the Landsat TM and ETM + data.considering the whole image at a time, I want to know some algorithm to perform the process. If anybody have any...

14 September 2015 5,476 17 View

Is ASTER DEM correct to use for morphometric analysis ?

Except resolution of 30 meters, How far is the ASTER DEM accurate for the mapping, for morphometric analysis or any other purpose of study, over SRTM DEM?

21 February 2015 8,663 10 View

What are the freely available satellite data products all over the globe?

I want to know all the free available satellite data sets and link from where it can be downloaded. Please help me?

11 February 2015 380 7 View

For a detailed geomorphological map, how accurate is the Landsat Imagery?

I want to know how far landsat image is useful for detail geomorphphic mapping or should I go for some other option of high resolution data?

05 February 2015 243 5 View