diff --git a/__init__.py b/__init__.py
index d6c62e1..d4b6617 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,7 +1,22 @@
+import math
 
 from PIL import Image
 import numpy as np
 import torch
+
+
+def tensorToImg(imageTensor):
+    imaget = imageTensor[0]
+    i = 255. * imaget.cpu().numpy()
+    img = Image.fromarray(np.clip(i, 0, 255).astype(np.uint8))
+    return img
+
+
+def imgToTensor(img):
+    image = np.array(img).astype(np.float32) / 255.0
+    imaget = torch.from_numpy(image)[None,]
+    return imaget
+
 class ImageOverlap:
 
     def __init__(self):
@@ -40,23 +55,14 @@ class ImageOverlap:
 
     CATEGORY = "badger"
 
-    def tensorToImg(self, imageTensor):
-        imaget = imageTensor[0]
-        i = 255. * imaget.cpu().numpy()
-        img = Image.fromarray(np.clip(i, 0, 255).astype(np.uint8))
-        return img
 
-    def imgToTensor(self,img):
-        image = np.array(img).astype(np.float32) / 255.0
-        imaget = torch.from_numpy(image)[None,]
-        return imaget
 
     def overlap(self, base_image, additional_image, x, y):
-        b_image = self.tensorToImg(base_image)
-        a_image = self.tensorToImg(additional_image)
+        b_image = tensorToImg(base_image)
+        a_image = tensorToImg(additional_image)
 
         b_image.paste(a_image, (x, y))
-        o_image = self.imgToTensor(b_image)
+        o_image = imgToTensor(b_image)
         return (o_image,)
 
 
@@ -159,12 +165,93 @@ class FloatToString:
         return (str(float),)
 
 
+class ImageNormalization:
+    def __init__(self):
+        pass
+
+    @classmethod
+    def INPUT_TYPES(s):
+
+        return {
+            "required": {
+                "width": ("INT",  {
+                    "default": 1.0,
+                    "min": 0.0,
+                    "max": 4096.0,
+                    "step": 0.01,
+                    "round": 0.01,
+                    "display": "number"}),
+                "height": ("INT",  {
+                    "default": 1.0,
+                    "min": 0.0,
+                    "max": 4096.0,
+                    "step": 0.01,
+                    "round": 0.01,
+                    "display": "number"}),
+                "target_width": ("INT",  {
+                    "default": 1.0,
+                    "min": 0.0,
+                    "max": 4096.0,
+                    "step": 0.01,
+                    "round": 0.01,
+                    "display": "number"}),
+                "target_height": ("INT",  {
+                    "default": 1.0,
+                    "min": 0.0,
+                    "max": 4096.0,
+                    "step": 0.01,
+                    "round": 0.01,
+                    "display": "number"})
+            },
+        }
+
+    RETURN_TYPES = ("INT", "INT", "INT", "INT", "INT", "INT",)
+    RETURN_NAMES = ("new_width", "new_height", "top", "left", "bottom", "right")
+
+    FUNCTION = "imageNormalization"
+
+    # OUTPUT_NODE = False
+
+    CATEGORY = "badger"
+
+    def imageNormalization(self, width, height, target_width, target_height):
+        o_ratio = width/height
+        ratio = target_width/target_height
+        top = 0
+        left = 0
+        bottom = 0
+        right = 0
+        nw = 0
+        nh = 0
+        # 原图比期望尺寸更扁，对齐宽，计算高，补上下
+        if(o_ratio>=ratio):
+            upratio = target_width/width
+            nw = target_width
+            nh = round(height*upratio)
+            hdiff = target_height - nh
+            top = math.floor(hdiff/2)
+            bottom = math.ceil(hdiff/2)
+        else:
+            upratio = target_height/height
+            nw = round(width*upratio)
+            nh = target_height
+            wdiff = target_width - nw
+            left = math.floor(wdiff/2)
+            right = math.ceil(wdiff/2)
+
+        return (nw, nh, top, left, bottom, right,)
+
+
+
+
+
+
 NODE_CLASS_MAPPINGS = {
     "ImageOverlap-badger": ImageOverlap,
     "FloatToInt-badger": FloatToInt,
     "IntToString-badger": IntToString,
-    "FloatToString-badger": FloatToString
-
+    "FloatToString-badger": FloatToString,
+    "ImageNormalization-badger": ImageNormalization
 }
 
 NODE_DISPLAY_NAME_MAPPINGS = {