object based image classification workflow in Orfeo Toolbox

This video shows workflow for supervised object based image classification performed with Orfeo ToolBox.

#OrfeoToolbox #OBIA #objectbasedclassification #supervisedclassification #tutorial #deeplearning #remotesensing #machinelearning #remotesensing #SVM #randomforest #artificialneuralnetworks #imageclassification

[longyuan]

Great video, working on it recently. I was lucky enough to see this video in time.

[lisaron]

Hi, the point file you use at 8:07. What kind of file is this? What kind of information does it have? Is it just points with the right class of that place?

[jensoldeland]

Thank you for that video! Great idea to use points for an "in-situ" sampling and then later add the labels to the polygons.

[michaelalvindomarbun]

very good video, but I want to ask at minute 23.08, where did you get the classification_result file from? thank you very much for the tutorial

[naso_]

Hi! Thancks for the video. Where can i get the data?

[eddisonjose]

Hello, can you upload the exercise data? Thanks!

[markbrown]

Sorry to bombard you with questions! In 'Train Vector Classifier' for 'Field names for training features', why do you select only mean values and not var values?

[marydivya]

I need to delineate shoreline boundary . 1. Can I able to do for the coast boundary. 2. Is there any method for classifying the panchromatic satellite image along the coast

[ЛесяСмирнова-ъл]

Thank you for videolesson. Could you tell me what file format of input image did you use (5:55)?

[fdybunti]

awsome tutorial mate, i wanted to ask is there any way to apply random forest classifier in this process ?

[aditirastogi]

Wanted to know the file you've used for extracting the polygon features...is it a simple segmented file or did you run zonal statistics on the file?

[seong-il]

Thank you for the video. The OTB was recently updated to 7.0. "User definied input centroids" has been added. Can you explain how to process the data?

[eng.heliomedeiros]

Great video! Im new with geoprocessing. How can I create an agriculture mask vector as in the video? Thanks a lot!

[briancarthy]

Hi, thanks for the video. How many dates and which S2 bands did you use in the raster stack?

[markbrown]

I've worked through this now and I seem to be missing some of the finer scale features. Is there a way to reduce the size of the segments to take finer scale features into account? Also is there anywhere that describes the variables that you are changing? Is it a case of adjusting the variables manually until you get a good result?

[sawon_stories]

Sir, I want to work on Sentinel-2 data in QGIS using OTB but after downloading the Dataset from ESA Copernicus open access hub, I can't display or add the dataset in my project so I can't start analysis using OTB. Please help me or suggest any tutorials if you have any.

[mattrobinette]

Can you inform me about your points please? Are they your "training samples" and you are just using points instead of polygons?Thanks!

[cars_worldcw]

Thank you very much sir, it is a very useful video.
I am interested in agricultural field segmentation; Should I have a large number of images (large time series) to get a precise segmentation ??

[cars_worldcw]

I have a problem sir: for new OTB versions, how can we write the list of field names for training features

[markbrown]

How do you get the Sentinel 1 and Sentinel 2 data to match up?