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-rw-r--r--modules/img2img.py29
1 files changed, 27 insertions, 2 deletions
diff --git a/modules/img2img.py b/modules/img2img.py
index 1e734ac8..c2392305 100644
--- a/modules/img2img.py
+++ b/modules/img2img.py
@@ -1,4 +1,6 @@
import math
+import cv2
+import numpy as np
from PIL import Image, ImageOps, ImageChops
from modules.processing import Processed, StableDiffusionProcessingImg2Img, process_images
@@ -59,8 +61,19 @@ def img2img(prompt: str, init_img, init_img_with_mask, steps: int, sampler_index
state.job_count = n_iter
+ do_color_correction = False
+ try:
+ from skimage import exposure
+ do_color_correction = True
+ except:
+ print("Install scikit-image to perform color correction on loopback")
+
+
for i in range(n_iter):
+ if do_color_correction and i == 0:
+ correction_target = cv2.cvtColor(np.asarray(init_img.copy()), cv2.COLOR_RGB2LAB)
+
p.n_iter = 1
p.batch_size = 1
p.do_not_save_grid = True
@@ -71,8 +84,20 @@ def img2img(prompt: str, init_img, init_img_with_mask, steps: int, sampler_index
if initial_seed is None:
initial_seed = processed.seed
initial_info = processed.info
-
- p.init_images = [processed.images[0]]
+
+ init_img = processed.images[0]
+
+ if do_color_correction and correction_target is not None:
+ init_img = Image.fromarray(cv2.cvtColor(exposure.match_histograms(
+ cv2.cvtColor(
+ np.asarray(init_img),
+ cv2.COLOR_RGB2LAB
+ ),
+ correction_target,
+ channel_axis=2
+ ), cv2.COLOR_LAB2RGB).astype("uint8"))
+
+ p.init_images = [init_img]
p.seed = processed.seed + 1
p.denoising_strength = max(p.denoising_strength * 0.95, 0.1)
history.append(processed.images[0])