Akjol Djenaliev

Dear all, I am interested to extract buildings using UAV (RGB) image and nDSM layer. First, Object Based Image Segmentation was performed. Slope, Brightness, Ratio of Green layers were generated. Grid Statistics for Segmented image objects were calculated. Based on several Mean layers statistics of image objects were selected building candidates. Now, I am getting difficulties to reclassify all shadows as buildings which are surrounded by building candidate class. Shadow and Building candidate classes...

Dear Volker, Thanks for your respond and advice. I will let you know my results next week. best regards, Akjol

Dear Volker, Thank you very much for your kind respond. I found my problems, because I used Landast -8 and Sentinel-2 data (R,G,B,NIR) (8bit) which were converted to TOA reflectance. After loading the original data of both satellites, the Object based image segmentation worked fine. Now I am interested to analyze UAV data (RGB) image and Normalised DSM. Here I am going to focus for building extractions by using object-based segmentation. I have tried to re-convert RGB and NDSM data to 32 float via...

Dear SAGA GIS professionals, My research interest is Object-Based Image Analysis (OBIA). I used eCognition Developer in the last 3 years and have experience more than 10 years in GIS field. As our license for eCognition is expired, so I started to investigate SAGA GIS for my research purposes. I use Landsat -8 data with coordinate system - WGS84 UTM Zone 44 and Sentinel-2 data with WGS84 UTM Zone 43 N for my study area. These data will be analyzed separately. The latest SAGA GIS version 7.0 is running...