Questions tagged [ecognition]

Object Based Image Analysis software

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9
votes
6answers
2k views

How to programmatically check if the number of shapes = number of table records?

I have a handful of approximately 1000 shapefiles that are corrupted (see attached error message). The shapefiles were generated from eCognition Developer 8. There is a script tool that seems to ...
3
votes
2answers
3k views

How to perform an accuracy assessment in eCognition?

How to do accuracy assessment of classified images in ecognition? I have done the image segmentation for Worldview-2 image. Then, I have processed for classification for class names (e.g road,...
1
vote
1answer
286 views

Using thematic layer for segmentation in eCognition?

I have a thematic layer, i want to perform segmentation and classification only within the thematic layer,not in a whole image. how can i do it? I tried to segment the image after viewing the thematic ...
9
votes
4answers
2k views

How to distinguish buildings from vegetation in LIDAR data?

In order to extract the vegetation mask in ecognition, with object base analysis, with creation of the rule sets, the buildings were also classified! Any idea how to extract building from vegetation? ...
2
votes
1answer
819 views

Erode pixel areas in QGIS

I try to resize Pixel segments exported from eCognition. The goal is to erode the segments for one pixel of the boarder. So for example if the segment is 30px x 30px the result should be a new area ...
1
vote
1answer
1k views

How to use thematic layer for supervised classification in eCognition

I'm classifying vegetation in eCognition. From ArcMap I already have a shapefile with training polygons that I would like to use for this but so far I was only able to insert this as a thematic layer ...
0
votes
1answer
599 views

Exporting training samples object statistics in eCognition

I have training samples collected for my four sites. I need to run CART for feature selection off eCognition. The only way I know is to recollect samples using manual classification which is not ...