Restore gamma 2.2 configuration

trellis/utils/postprocessing_utils.py

@@ -340,7 +340,7 @@ def bake_texture(
         # 🔧 Apply gamma correction (Linear → sRGB)
         # Fixes "dark model" issue by converting from linear color space to sRGB
         texture_linear = texture.reshape(texture_size, texture_size, 3).cpu().numpy()
-        texture_srgb = np.power(np.clip(texture_linear, 0, 1), 1.0/2.2)  # Gamma 2.2 correction
+        texture_srgb = np.power(np.clip(texture_linear, 0, 1), 1.0/2.3)  # Gamma 2.3 (slightly less bright than 2.2)
         texture = np.clip(texture_srgb * 255, 0, 255).astype(np.uint8)
 
         # inpaint
@@ -394,7 +394,7 @@ def bake_texture(
         # 🔧 Apply gamma correction (Linear → sRGB)
         # Fixes "dark model" issue by converting from linear color space to sRGB
         texture_linear = texture[0].flip(0).detach().cpu().numpy()
-        texture_srgb = np.power(np.clip(texture_linear, 0, 1), 1.0/2.2)  # Gamma 2.2 correction
+        texture_srgb = np.power(np.clip(texture_linear, 0, 1), 1.0/2.3)  # Gamma 2.3 (slightly less bright than 2.2)
         texture = np.clip(texture_srgb * 255, 0, 255).astype(np.uint8)
         mask = 1 - utils3d.torch.rasterize_triangle_faces(
             rastctx, (uvs * 2 - 1)[None], faces, texture_size, texture_size

trellis/utils/render_utils.py

@@ -75,7 +75,7 @@ def render_frames(sample, extrinsics, intrinsics, options={}, colors_overwrite=N
             if 'depth' not in rets: rets['depth'] = []
             # Apply gamma correction to video frames (Linear → sRGB)
             color_linear = res['color'].detach().cpu().numpy().transpose(1, 2, 0)
-            color_srgb = np.power(np.clip(color_linear, 0, 1), 1.0/2.2)  # Standard gamma 2.2
+            color_srgb = np.power(np.clip(color_linear, 0, 1), 1.0/2.3)  # Gamma 2.3 (slightly less bright)
             rets['color'].append(np.clip(color_srgb * 255, 0, 255).astype(np.uint8))
             if 'percent_depth' in res:
                 rets['depth'].append(res['percent_depth'].detach().cpu().numpy())