Inference Overlay: Difference between revisions
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The Inference Overlay is a Grid Overlay which can spatially identify features using one or more Prequel Grids. Features are identified using a [[Neural Network]]. This | [[File:Treesmask.jpg|thumb|right|Trees detected with Inference Overlay.]] | ||
The AI Inference Overlay is a [[Grid Overlay]] which can spatially identify features using one or more Prequel Grids. Features are identified using a Convolution [[Neural Network]] that used a limited amount of proposal regions (RCNN). This Neural Network takes a subsection (window) of the input grid and either; | |||
* [[classifies]] the image as a whole | |||
* [[detect one or more objects]] in that image. | |||
It is not possible to run the convolution network on the grid as a whole. Therefore, a marching window strategy is applied instead, where the window is moved over the input grid with a [[Stride fraction (Inference Overlay)|configurable stride]]. This window takes the input values of one or more grids and puts these into tensors representing either floating point values or color channels (red, green and blue). Depending on the dataset used to train the neural network, the tensor values are normalized based on a particular value range. For example, a relative height input tensor for a foliage neural network trained on height data can be normalized using a range of 0 to 40 meters, when 40 meters is considered the largest tree height in the Netherlands. | |||
==Foliage Example== | |||
[[File:inference_foliage_animated.gif|frame|right|Animation of inference with a moving window and Bounding Box detection.]] | |||
Using a [[Satellite Overlay]] of 0.1m detail, foliage features can be identified using an [[Inference Overlay]] and enhanced with a [[Digital Terrain Model Overlay]] (DTM), a [[WCS Overlay|WCS Overlay]] representing the [[DSM]], [[Combo Overlay]] to combine these and an optionally an iterative [[Avg & interpolation (overlay)|Max Overlay]] to enhance the foliage height. For more information, see this [[How to detect foliage using an Inference Overlay|how-to]]. | |||
<gallery widths="200"> | |||
foliage_inference_labels.jpg|[[Labels result type (Inference Overlay)|Labeled features]] on 0.1m satellite image | |||
foliage_inference_scores.jpg|[[Scores result type (Inference Overlay)|Label Scores]] | |||
foliage_inference_masks.jpg|[[Masks result type (Inference Overlay)|Pixel Masks]] | |||
foliage_inference_boxes.jpg|[[Boxes result type (Inference Overlay)|Bounding Boxes]] | |||
foliage_inference_foliage_height.jpg|[[DSM]] subtracted by [[DTM]] on identified features | |||
foliage_inference_iterative_max_5_iterations_d0_25m.jpg|Max neighboring height within 0.25m, iterated 5 times | |||
</gallery> | |||
{{article end | |||
|seealso= | |||
* [[Model attributes (Inference Overlay)]] | |||
* [[Neural Network]] | |||
* [[ONNX]] | |||
* [[PyTorch]] | |||
|howtos= | |||
* [[How to detect foliage using an Inference Overlay]] | |||
* [[How to create foliage height based on an Inference Overlay]] | |||
* [[How to import trees based on an Inference Overlay]] | |||
* [[How to detect solar panels using an Inference Overlay]] | |||
* [[How to update Buildings's solar panel attribute based on an Inference Overlay]] | |||
}} | |||
{{InferenceOverlay nav}} | |||
{{Overlay nav}} | {{Overlay nav}} | ||
Latest revision as of 13:05, 17 December 2024
The AI Inference Overlay is a Grid Overlay which can spatially identify features using one or more Prequel Grids. Features are identified using a Convolution Neural Network that used a limited amount of proposal regions (RCNN). This Neural Network takes a subsection (window) of the input grid and either;
- classifies the image as a whole
- detect one or more objects in that image.
It is not possible to run the convolution network on the grid as a whole. Therefore, a marching window strategy is applied instead, where the window is moved over the input grid with a configurable stride. This window takes the input values of one or more grids and puts these into tensors representing either floating point values or color channels (red, green and blue). Depending on the dataset used to train the neural network, the tensor values are normalized based on a particular value range. For example, a relative height input tensor for a foliage neural network trained on height data can be normalized using a range of 0 to 40 meters, when 40 meters is considered the largest tree height in the Netherlands.
Foliage Example
Using a Satellite Overlay of 0.1m detail, foliage features can be identified using an Inference Overlay and enhanced with a Digital Terrain Model Overlay (DTM), a WCS Overlay representing the DSM, Combo Overlay to combine these and an optionally an iterative Max Overlay to enhance the foliage height. For more information, see this how-to.
Labeled features on 0.1m satellite image
Max neighboring height within 0.25m, iterated 5 times
How-to's
- How to detect foliage using an Inference Overlay
- How to create foliage height based on an Inference Overlay
- How to import trees based on an Inference Overlay
- How to detect solar panels using an Inference Overlay
- How to update Buildings's solar panel attribute based on an Inference Overlay
See also
