some changes for outpainting to produce less seams

modules/processing.py

@@ -342,7 +342,9 @@ class StableDiffusionProcessingImg2Img(StableDiffusionProcessing):
                 self.paste_to = (x1, y1, x2-x1, y2-y1)
             else:
                 self.image_mask = images.resize_image(self.resize_mode, self.image_mask, self.width, self.height)
-                self.mask_for_overlay = self.image_mask
+                np_mask = np.array(self.image_mask)
+                np_mask = 255 - np.clip((255 - np_mask.astype(np.float)) * 2, 0, 255).astype(np.uint8)
+                self.mask_for_overlay = Image.fromarray(np_mask)
 
             self.overlay_images = []
 

scripts/poor_mans_outpainting.py

@@ -67,7 +67,7 @@ class Script(scripts.Script):
 
         latent_mask = Image.new("L", (img.width, img.height), "white")
         latent_draw = ImageDraw.Draw(latent_mask)
-        latent_draw.rectangle((left + 1, up + 1, mask.width - right - 1, mask.height - down - 1), fill="black")
+        latent_draw.rectangle((left + left//2, up + up//2, mask.width - right - right//2, mask.height - down - down//2), fill="black")
 
         processing.torch_gc()