feat: revert pixel 0,0,0,0 preprocess

main.py

@@ -534,6 +534,11 @@ def main():
     img = Image.open(f"data/images/{args.character}.png")
     img = img.convert('RGBA')
     ow, oh = img.size
+    for i, px in enumerate(img.getdata()):
+        if px[3] <= 0:
+            y = i // ow
+            x = i % ow
+            img.putpixel((x, y), (0, 0, 0, 0))
     if ow != 512 or oh != 512:
         img = resize_to_512_center(img)
     if args.alpha_clean: