Tagged Questions

Object Based Image Analysis software

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3
votes
0answers
65 views
+250

How to generalize training data for a random forest classifier?

I am working with a random forest classifier in eCognition (new with eCognition 9.0). The image shows 8 NAIP tiles I am attempting to classify using approximately 100 training points. The training ...
6
votes
1answer
129 views

Ditch Extraction using LIDAR DTM (1m resolution)

I'm trying to extract ditches using the LIDAR DTM using the software eCognition but I am actually having a hard time since the paper where I based my workflow entitled "Ditches’ network extraction and ...
0
votes
0answers
58 views

exporting segmentation results from ecognition to other software for anaylsis

I want to create vegetation indices in ERDAS but based on segmentation derived in eCognition. I have tried different ways of exporting my segmentation results to a TIFF file which i can further use ...
0
votes
1answer
165 views

What software programs can run a supervised classification on an image segmented into objects?

I am trying to run a supervised MLC classification on a multispectral remotely sensed image, however, I want the image to be classified using a shapefile of segmented image objects (as opposed to the ...
2
votes
1answer
162 views

How can I define hierarchical levels in eCognition

I'd like to define classes with 2 levels. Firstly I'm gonna classify some broad classes such as forest, grassland in a level 1. Furthermore, I'd like to classify these classes into some sub-classes ...
0
votes
1answer
271 views

Shapfile created in QGIS does not fit in ecognition project

I have various shapefiles - some created by others, some created by my self. They should all have the same size of the underlying Raster file. The shapefiles have been created on top of a Raster file ...
1
vote
1answer
136 views

Relational operation in eCognition

Is there anyone who has a experience with relational operation in eCognition. I'd like to ask 2 questions related to eCognition. 1. How can I classify the pixel values between 0.23 and 0.46 as a class ...
1
vote
1answer
139 views

How to link 2 different images in eCognition

I'd like to link 2 different images in eCognition to find the same pixels on both images. The images have same projection (geog lat/long). How can I do this? Thank you so much
1
vote
1answer
105 views

How to do separability analysis in eCognition?

Can I use eCognition to check which bands are more helpful to separate individual classes and to get output result? If so, how can I do this?
9
votes
6answers
433 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 ...
1
vote
0answers
242 views

How to generate TTA mask for accuracy assement in eCognition?

I'm learning to use eCognition software recently. I have done the image segmentation for Worldview-2 image. Then, I have processed for classification for class names (e.g forest,built-up area, grass ...
5
votes
2answers
226 views

How to know what spectrum image layers are in eCognition?

I'm learning to use eCognition (8.1) and my teacher has provided me with some example tif files to segment and classify. The tif files have multiple layers, each of which are supposed to represent a ...
9
votes
4answers
1k 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? ...