lot of rearranging, updated readme.

2023-03-31 16:31:31 -04:00
parent 33666fae4f
commit a16f96d3cf
13 changed files with 289 additions and 260 deletions
@@ -0,0 +1,53 @@
+import torch
+import torch.nn.functional as F
+
+
+class Sharpen:
+    def __init__(self):
+        pass
+
+    @classmethod
+    def INPUT_TYPES(s):
+        return {
+            "required": {
+                "image": ("IMAGE",),
+                "kernel_size": ("INT", {
+                    "default": 5,
+                    "min": 1,
+                    "max": 31,
+                    "step": 1
+                }),
+                "alpha": ("FLOAT", {
+                    "default": 1.0,
+                    "min": 0.1,
+                    "max": 5.0,
+                    "step": 0.1
+                }),
+            },
+        }
+
+    RETURN_TYPES = ("IMAGE",)
+    FUNCTION = "sharpen"
+
+    CATEGORY = "postprocessing"
+
+    def sharpen(self, image: torch.Tensor, kernel_size: int, alpha: float):
+        batch_size, height, width, channels = image.shape
+
+        kernel = torch.ones((kernel_size, kernel_size), dtype=torch.float32) * -1
+        center = kernel_size // 2
+        kernel[center, center] = kernel_size**2
+        kernel *= alpha
+        kernel = kernel.repeat(channels, 1, 1).unsqueeze(1)
+
+        tensor_image = image.permute(0, 3, 1, 2) # Torch wants (B, C, H, W) we use (B, H, W, C)
+        sharpened = F.conv2d(tensor_image, kernel, padding=center, groups=channels)
+        sharpened = sharpened.permute(0, 2, 3, 1)
+
+        result = torch.clamp(sharpened, 0, 1)
+
+        return (result,)
+
+NODE_CLASS_MAPPINGS = {
+    "Sharpen": Sharpen
+}