Upload inference.py with huggingface_hub
Browse files- inference.py +15 -5
inference.py
CHANGED
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@@ -2,7 +2,7 @@ import torch
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import torch.nn as nn
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import torch.nn.functional as F
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#
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class UNet(nn.Module):
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def __init__(self):
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super(UNet, self).__init__()
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@@ -23,11 +23,13 @@ class UNet(nn.Module):
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self.upconv1 = nn.ConvTranspose2d(128, 64, kernel_size=2, stride=2)
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self.decoder1 = self.conv_block(128, 64)
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self.conv_last = nn.Conv2d(64, 1, kernel_size=1)
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def conv_block(self, in_channels, out_channels):
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return nn.Sequential(
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nn.Conv2d(in_channels, out_channels, kernel_size=3, padding=1), nn.ReLU(),
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nn.Conv2d(out_channels, out_channels, kernel_size=3, padding=1), nn.ReLU()
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)
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def forward(self, x):
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enc1 = self.encoder1(x)
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enc2 = self.encoder2(F.max_pool2d(enc1, 2))
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@@ -35,38 +37,46 @@ class UNet(nn.Module):
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enc4 = self.encoder4(F.max_pool2d(enc3, 2))
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enc5 = self.encoder5(F.max_pool2d(enc4, 2))
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bottleneck = self.bottleneck(F.max_pool2d(enc5, 2))
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dec5 = self.upconv5(bottleneck)
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dec5 = torch.cat((enc5, dec5), dim=1)
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dec5 = self.decoder5(dec5)
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dec4 = self.upconv4(dec5)
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dec4 = torch.cat((enc4, dec4), dim=1)
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dec4 = self.decoder4(dec4)
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dec3 = self.upconv3(dec4)
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dec3 = torch.cat((enc3, dec3), dim=1)
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dec3 = self.decoder3(dec3)
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dec2 = self.upconv2(dec3)
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dec2 = torch.cat((enc2, dec2), dim=1)
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dec2 = self.decoder2(dec2)
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dec1 = self.upconv1(dec2)
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dec1 = torch.cat((enc1, dec1), dim=1)
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dec1 = self.decoder1(dec1)
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return torch.sigmoid(self.conv_last(dec1))
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def load_model(model_path, device='cpu'):
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"""
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-
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"""
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model = UNet().to(device)
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model.load_state_dict(torch.load(model_path, map_location=device))
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model.eval()
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return model
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def predict(model, image_tensor):
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"""
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Realiza
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- model: modelo
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- image_tensor: tensor FloatTensor [C,H,W] normalizado.
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Retorna tensor [1,H,W]
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"""
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with torch.no_grad():
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output = model(image_tensor.unsqueeze(0))
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import torch.nn as nn
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import torch.nn.functional as F
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# Definición de la arquitectura UNet (la misma utilizada en el entrenamiento).
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class UNet(nn.Module):
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def __init__(self):
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super(UNet, self).__init__()
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self.upconv1 = nn.ConvTranspose2d(128, 64, kernel_size=2, stride=2)
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self.decoder1 = self.conv_block(128, 64)
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self.conv_last = nn.Conv2d(64, 1, kernel_size=1)
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+
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def conv_block(self, in_channels, out_channels):
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return nn.Sequential(
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nn.Conv2d(in_channels, out_channels, kernel_size=3, padding=1), nn.ReLU(),
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nn.Conv2d(out_channels, out_channels, kernel_size=3, padding=1), nn.ReLU()
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)
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+
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def forward(self, x):
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enc1 = self.encoder1(x)
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enc2 = self.encoder2(F.max_pool2d(enc1, 2))
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enc4 = self.encoder4(F.max_pool2d(enc3, 2))
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enc5 = self.encoder5(F.max_pool2d(enc4, 2))
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bottleneck = self.bottleneck(F.max_pool2d(enc5, 2))
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dec5 = self.upconv5(bottleneck)
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dec5 = torch.cat((enc5, dec5), dim=1)
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dec5 = self.decoder5(dec5)
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dec4 = self.upconv4(dec5)
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dec4 = torch.cat((enc4, dec4), dim=1)
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dec4 = self.decoder4(dec4)
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dec3 = self.upconv3(dec4)
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dec3 = torch.cat((enc3, dec3), dim=1)
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dec3 = self.decoder3(dec3)
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+
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dec2 = self.upconv2(dec3)
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dec2 = torch.cat((enc2, dec2), dim=1)
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dec2 = self.decoder2(dec2)
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dec1 = self.upconv1(dec2)
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dec1 = torch.cat((enc1, dec1), dim=1)
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dec1 = self.decoder1(dec1)
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return torch.sigmoid(self.conv_last(dec1))
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def load_model(model_path, device='cpu'):
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"""
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Carga el modelo UNet con los pesos desde 'model_path'.
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"""
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model = UNet().to(device)
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model.load_state_dict(torch.load(model_path, map_location=device))
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model.eval()
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return model
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def predict(model, image_tensor):
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"""
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Realiza la predicción de la máscara de instancias para una imagen.
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- model: modelo cargado (UNet).
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- image_tensor: tensor FloatTensor [C,H,W] normalizado.
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Retorna un tensor [1,H,W] con probabilidades/máscara.
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"""
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with torch.no_grad():
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output = model(image_tensor.unsqueeze(0))
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