fix loopback color correction to store color_correction info for initial image...

fix loopback color correction to store color_correction info for initial image and use that instead of extracting from previous image in a loop #481 #541

modules/processing.py

@@ -445,7 +445,9 @@ class StableDiffusionProcessingImg2Img(StableDiffusionProcessing):
 
         latent_mask = self.latent_mask if self.latent_mask is not None else self.image_mask
 
-        self.color_corrections = []
+        add_color_corrections = opts.img2img_color_correction and self.color_corrections is None
+        if add_color_corrections:
+            self.color_corrections = []
         imgs = []
         for img in self.init_images:
             image = img.convert("RGB")
@@ -467,7 +469,7 @@ class StableDiffusionProcessingImg2Img(StableDiffusionProcessing):
                 if self.inpainting_fill != 1:
                     image = fill(image, latent_mask)
 
-            if opts.img2img_color_correction:
+            if add_color_corrections:
                 self.color_corrections.append(setup_color_correction(image))
 
             image = np.array(image).astype(np.float32) / 255.0

scripts/loopback.py

@@ -40,6 +40,9 @@ class Script(scripts.Script):
         all_images = []
         state.job_count = loops * batch_count
 
+        if opts.img2img_color_correction:
+            p.color_corrections = [processing.setup_color_correction(p.init_images[0])]
+
         for n in range(batch_count):
             history = []