This model uses a 10 layer classifier network to create an image segmentation of the location of healthy or unhealthy sod coverage in an aerial image. A sliding window approach is used, where 64×64 pixel tiles are taken from the image and classified based on the health of the sod detected. This gives the model great flexibility in image resolution and shape, however care needs to be taken since this model does not distinguish between healthy vegetation and healthy sod coverage.
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84% Dice Coefficient
86% F1 Score
Accuracy is the fraction of correct predictions made by the classifier. This metric is calculated by dividing the number of correct predictions by the total number of predictions.
Dice Coefficient is a statistic used to gauge the similarity of two samples.
F1 Score is the harmonic mean of the precision and recall, with best value of 1. It measures the balance between the two metrics.
A higher precision score indicates that the majority of labels predicted by the model for different classes are accurate.
A higher recall score indicates that the model finds and predicts correct labels for the majority of the classes it is supposed to find.
This model has not been tested, and is not recommended, for urban areas or other images where vegetation isn’t a significant portion of the image.
Images with a high level of fidelity will perform better. If performance is poor, it’s suggested that you modify the level of zoom for an image.
This model uses the PSPNet architecture with a Resnet50 backbone to detect and locate all trees within a given aerial top down image. It takes overlapping tiles of the input image of size 512×512 and combines them into a final prediction.
This model was trained on aerial drone imagery on a collection of levees within Kansas. Approximately 2000 labeled images were hand labeled, verified, and used to train the model. The model was trained using the Adam optimizer with a learning rate of 0.001.
Validation was performed on a 10% holdout portion of the original data that was collected.
The input(s) to this model must adhere to the following specifications:
The output is a mask of the same size, with higher values indicating less sod coverage. A value of 0 indicates healthy sod coverage.
This model will output the following:
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