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Affected files: STEM/AI/Neural Networks/CNN/Examples.md STEM/AI/Neural Networks/CNN/FCN/FCN.md STEM/AI/Neural Networks/CNN/FCN/ResNet.md STEM/AI/Neural Networks/CNN/FCN/Skip Connections.md STEM/AI/Neural Networks/CNN/GAN/DC-GAN.md STEM/AI/Neural Networks/CNN/GAN/GAN.md STEM/AI/Neural Networks/CNN/Interpretation.md STEM/AI/Neural Networks/CNN/UpConv.md STEM/AI/Neural Networks/Deep Learning.md STEM/AI/Neural Networks/MLP/MLP.md STEM/AI/Neural Networks/Properties+Capabilities.md STEM/AI/Neural Networks/SLP/Least Mean Square.md STEM/AI/Neural Networks/SLP/SLP.md STEM/AI/Neural Networks/Transformers/Transformers.md STEM/AI/Properties.md STEM/CS/Language Binding.md STEM/CS/Languages/dotNet.md STEM/Signal Proc/Image/Image Processing.md
41 lines
1.2 KiB
Markdown
41 lines
1.2 KiB
Markdown
Fully [Convolution](../../../../Signal%20Proc/Convolution.md)al Network
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[Convolutional](../Convolutional%20Layer.md) and [up-convolutional layers](../UpConv.md) with [ReLu](../../Activation%20Functions.md#ReLu) but no others (pooling)
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- All some sort of Encoder-Decoder
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Contractive → [UpConv](../UpConv.md)
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# Image Segmentation
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- For visual output
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- Previously image $\rightarrow$ vector
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- Additional layers to up-sample representation to an image
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- Up-[convolution](../../../../Signal%20Proc/Convolution.md)al
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- De-[convolution](../../../../Signal%20Proc/Convolution.md)al
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![fcn-uses](../../../../img/fcn-uses.png)
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![fcn-arch](../../../../img/fcn-arch.png)
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# Training
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- Rarely from scratch
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- Pre-trained weights
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- Replace final layers
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- [FC](../../MLP/MLP.md) layers
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- White-noise initialised
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- Add [UpConv](../UpConv.md) layer(s)
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- Fine-tune train
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- Freeze others
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- Annotated GT images
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- Can use summed per-pixel log [loss](../../Deep%20Learning.md#Loss%20Function)
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# Evaluation
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![fcn-eval](../../../../img/fcn-eval.png)
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- SDS
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- Classical method
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- 52% mAP
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- FCN
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- 62% mAP
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- Intersection over Union
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- IOU
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- Jaccard
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- Averaged over all images
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- $J(A,B)=\frac{|A\cap B|}{|A\cup B|}$ |