Read about this topic in one of my GIS textbooks and only understood about 1/3 of the information and it took 2-3 times the times. You have quite a knack for teaching! Thank you!
Hi Peg, I agree with the rest of folks here. Thank you for the simpler way of explaning DN, Rad and RefL. I am writing a landcover change detection and i am including this on my citation. Good job!
Only suggestion. Technically, reflectance is an inherent property of a material (along with trans. and absorption). It is a result or consequence of a ratio of incident hemispherical irradiance (for example, excluding the more specific directional BRDF) and exitance from a material. The residual is then called the quantity "reflectance". i.e., I often teach it as, "what did the material do (i..e, abs, refl, transmit) to the incident radiation" Semantics. :) Nice job !
most commercial satellite imagery offers radiometrically corrected imagery (eg WV GE) but dont say if its full radiometric correction (meaning including atmospheric correction) or just converting DNs to at-sensor radiance and to at-sensor reflectance . Is there any way to tell that indeed radiometric correction has been applied, like whats the pixel values become or through image stats? Thanks
Hi, I am working with some data of Landsat 5 and I am wondering what to do with the information after calculate the radiance and then the reflectance for each pixel of the image, I mean, do I have to save them into different images? Or do I have to make a kind of merge of them to get a resulting image with information about ground recognition? Thank you. PD: I really liked your video, you make it very simple to understand
i cannot find your blog about the digital number radiance and reflectance , when i search for it ,it will come out harris geospatial. are your blog in harris geospatial ,but why i cant find it. can someone help me?? i need it.
Brilliant video, thanks - I'm a remote sensing student and it's nice to hear the fundamentals described so concisely and with such clarity.
Read about this topic in one of my GIS textbooks and only understood about 1/3 of the information and it took 2-3 times the times. You have quite a knack for teaching! Thank you!
Hi Peg, I agree with the rest of folks here. Thank you for the simpler way of explaning DN, Rad and RefL. I am writing a landcover change detection and i am including this on my citation. Good job!
Incredible explanation. Thank you so much!
Only suggestion. Technically, reflectance is an inherent property of a material (along with trans. and absorption). It is a result or consequence of a ratio of incident hemispherical irradiance (for example, excluding the more specific directional BRDF) and exitance from a material. The residual is then called the quantity "reflectance". i.e., I often teach it as, "what did the material do (i..e, abs, refl, transmit) to the incident radiation" Semantics. :) Nice job !
So informative, precise and concise ...
Thank you so much! great video and explanation!!
most commercial satellite imagery offers radiometrically corrected imagery (eg WV GE) but dont say if its full radiometric correction (meaning including atmospheric correction) or just converting DNs to at-sensor radiance and to at-sensor reflectance . Is there any way to tell that indeed radiometric correction has been applied, like whats the pixel values become or through image stats? Thanks
Nice job. Simplicity is genious
The necessary links to the blog posts keyed in here in the description would be appreciated. Thanks for the video
Thank you for great video
Thank you for your clear presentation.
Hi, I am working with some data of Landsat 5 and I am wondering what to do with the information after calculate the radiance and then the reflectance for each pixel of the image, I mean, do I have to save them into different images? Or do I have to make a kind of merge of them to get a resulting image with information about ground recognition? Thank you.
PD: I really liked your video, you make it very simple to understand
Thanks it was very informative for me !
very good video.
Awesome! Thanks
What is the tool for converting DN to radiance?
i cannot find your blog about the digital number radiance and reflectance , when i search for it ,it will come out harris geospatial.
are your blog in harris geospatial ,but why i cant find it. can someone help me?? i need it.
www.harrisgeospatial.com/Learn/Blogs/Blog-Details/TabId/2716/ArtMID/10198/ArticleID/16278/Digital-Number-Radiance-and-Reflectance.aspx