HDBNet (HKLUT) implementation

src/common/base.py

@@ -12,7 +12,7 @@ class SRBase(nn.Module):
 
     def get_loss_fn(self):
         def loss_fn(pred, target):
-            return F.mse_loss(pred/255, target/255)
+            return F.mse_loss(pred/127.5-127.5, target/127.5-127.5)
         return loss_fn
 
     # def get_loss_fn(self):

src/common/data.py

@@ -65,7 +65,6 @@ class SRTrainDataset(Dataset):
                     :
                 ]
 
-
             if self.rigid_aug:
                 if random.uniform(0, 1) < 0.5:
                     hr_patch = np.fliplr(hr_patch)

src/models/models.py

@@ -44,7 +44,7 @@ class ChebyKANBase(SRBase):
         super(ChebyKANBase, self).__init__()
         self.config = None
         self.stage1_S = layers.UpscaleBlock(None)
-        window_size = 7
+        window_size = 5
         self._extract_pattern = layers.PercievePattern(
             receptive_field_idxes=[[i,j] for i in range(window_size) for j in range(window_size)], 
             center=[window_size//2,window_size//2], 
@@ -62,21 +62,21 @@ class ChebyKANNet(ChebyKANBase):
     def __init__(self, config):
         super(ChebyKANNet, self).__init__()
         self.config = config
-        window_size = 7
+        window_size = 5
         self.stage1_S.stage = layers.ChebyKANUpscaleBlockNet(
             in_features=window_size*window_size, 
             out_channels=1, 
             hidden_dim=16, 
-            layers_count=self.config.layers_count, 
+            layers_count=2,#self.config.layers_count, 
             upscale_factor=self.config.upscale_factor, 
-            degree=8
+            degree=3
         )
 
 class ChebyKANLut(ChebyKANBase):
     def __init__(self, config):
         super(ChebyKANLut, self).__init__()
         self.config = config
-        window_size = 7
+        window_size = 5
         self.stage1_S.stage = layers.ChebyKANUpscaleBlockNet(
             in_features=window_size*window_size, 
             out_channels=1, 
@@ -93,3 +93,71 @@ class ChebyKANLut(ChebyKANBase):
         return loss_fn
 
 TRANSFERER.register(ChebyKANNet, ChebyKANLut)
+
+
+class HDBNetBase(SRBase):
+    def __init__(self):
+        super(HDBNetBase, self).__init__()
+        self.config = None
+        self.stage_3H = layers.UpscaleBlock(None)
+        self.stage_3D = layers.UpscaleBlock(None)
+        self.stage_3B = layers.UpscaleBlock(None)
+        self.stage_2H = layers.UpscaleBlock(None)
+        self.stage_2D = layers.UpscaleBlock(None)
+        self._extract_pattern_3H = layers.PercievePattern(receptive_field_idxes=[[0,0],[0,1],[0,2]], center=[0,0], window_size=3)
+        self._extract_pattern_3D = layers.PercievePattern(receptive_field_idxes=[[0,0],[1,1],[2,2]], center=[0,0], window_size=3)
+        self._extract_pattern_3B = layers.PercievePattern(receptive_field_idxes=[[0,0],[1,2],[2,1]], center=[0,0], window_size=3)
+        self._extract_pattern_2H = layers.PercievePattern(receptive_field_idxes=[[0,0],[0,1]],       center=[0,0], window_size=2)
+        self._extract_pattern_2D = layers.PercievePattern(receptive_field_idxes=[[0,0],[1,1]],       center=[0,0], window_size=2)   
+
+    def forward(self, x, script_config=None):
+        b,c,h,w = x.shape
+        x = x.reshape(b*c, 1, h, w)
+        lsb = x % 16
+        msb = x - lsb     
+        output = torch.zeros([b*c, 1, h*self.config.upscale_factor, w*self.config.upscale_factor], dtype=x.dtype, device=x.device)
+        for rotations_count in range(4):
+           rotated_msb = torch.rot90(msb, k=rotations_count, dims=[2, 3])
+           rotated_lsb = torch.rot90(lsb, k=rotations_count, dims=[2, 3])
+           output_msb = self.stage_3H( rotated_msb, self._extract_pattern_3H ) + \
+                        self.stage_3D( rotated_msb, self._extract_pattern_3D ) + \
+                        self.stage_3B( rotated_msb, self._extract_pattern_3B )
+           output_lsb = self.stage_2H( rotated_lsb, self._extract_pattern_2H ) + \
+                        self.stage_2D( rotated_lsb, self._extract_pattern_2D )
+           output_msb /= 3
+           output_lsb /= 2
+           if not script_config is None and script_config.current_iter % script_config.display_step == 0:
+                script_config.writer.add_histogram('s1_output_lsb', output_lsb.detach().cpu().numpy(), script_config.current_iter)
+                script_config.writer.add_histogram('s1_output_msb', output_msb.detach().cpu().numpy(), script_config.current_iter)
+           output += torch.rot90(output_msb + output_lsb, k=-rotations_count, dims=[2, 3]).clamp(0, 255)
+        output /= 4
+        x = output
+        x = x.reshape(b, c, h*self.config.upscale_factor, w*self.config.upscale_factor)
+        return x
+
+    def get_loss_fn(self):
+        def loss_fn(pred, target):
+            return F.l1_loss(pred/127.5-127.5, target/127.5-127.5)
+        return loss_fn
+
+class HDBNet(HDBNetBase):
+    def __init__(self, config):
+        super(HDBNet, self).__init__()
+        self.config = config
+        self.stage_3H.stage = layers.LinearUpscaleBlockNet(in_features=3, hidden_dim=self.config.hidden_dim, layers_count=self.config.layers_count, upscale_factor=self.config.upscale_factor)
+        self.stage_3D.stage = layers.LinearUpscaleBlockNet(in_features=3, hidden_dim=self.config.hidden_dim, layers_count=self.config.layers_count, upscale_factor=self.config.upscale_factor)
+        self.stage_3B.stage = layers.LinearUpscaleBlockNet(in_features=3, hidden_dim=self.config.hidden_dim, layers_count=self.config.layers_count, upscale_factor=self.config.upscale_factor)
+        self.stage_2H.stage = layers.LinearUpscaleBlockNet(in_features=2, input_max_value=15, output_max_value=15, hidden_dim=self.config.hidden_dim, layers_count=self.config.layers_count, upscale_factor=self.config.upscale_factor)
+        self.stage_2D.stage = layers.LinearUpscaleBlockNet(in_features=2, input_max_value=15, output_max_value=15, hidden_dim=self.config.hidden_dim, layers_count=self.config.layers_count, upscale_factor=self.config.upscale_factor)
+
+class HDBLut(HDBNetBase):
+    def __init__(self, config):
+        super(HDBLut, self).__init__()
+        self.config = config
+        self.stage_3H.stage = layers.LinearUpscaleBlockLut(quantization_interval=self.config.quantization_interval, upscale_factor=self.config.upscale_factor)
+        self.stage_3D.stage = layers.LinearUpscaleBlockLut(quantization_interval=self.config.quantization_interval, upscale_factor=self.config.upscale_factor)
+        self.stage_3B.stage = layers.LinearUpscaleBlockLut(quantization_interval=self.config.quantization_interval, upscale_factor=self.config.upscale_factor)
+        self.stage_2H.stage = layers.LinearUpscaleBlockLut(quantization_interval=self.config.quantization_interval, upscale_factor=self.config.upscale_factor)
+        self.stage_2D.stage = layers.LinearUpscaleBlockLut(quantization_interval=self.config.quantization_interval, upscale_factor=self.config.upscale_factor)
+
+TRANSFERER.register(HDBNet, HDBLut)

src/train.py

@@ -242,7 +242,6 @@ if __name__ == "__main__":
         if i % config.display_step == 0:
             config.writer.add_scalar('loss_Pixel', l_accum[0] / config.display_step, i)
             config.writer.add_scalar('loss', loss.item(), i)
-
             config.logger.info("{} | Iter:{:6d}, Sample:{:6d}, loss:{:.2e}, prepare_data_time:{:.4f}, forward_backward_time:{:.4f}".format(
                 model.__class__.__name__, 
                 i,