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Example "Train multiclass segmentation on CamVid" Image normalization may be error #1224

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@sysau

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@sysau

in examples/camvid_segmentation_multiclass.ipynb CamVidModel (and other examples) , image is not scaled to [0,1]

def forward(self, image):        # normalize image here        print("param: ", self.mean, self.std)        print("before:", image[0,:,100,100])        image = (image - self.mean) / self.std        print("after:",   image[0,:,100,100])        mask = self.model(image)        return mask

and the result is :

param:  tensor([[[[0.4850]],         [[0.4560]],         [[0.4060]]]]) tensor([[[[0.2290]],         [[0.2240]],         [[0.2250]]]])before: tensor([59, 55, 55], dtype=torch.uint8)after: tensor([255.5240, 243.5000, 242.6400])

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