Enhance ball rings with neon glow effect (additive blending)

app.py

@@ -800,10 +800,10 @@ FX_GLOW_COLOR = np.array([1.0, 0.1, 0.6], dtype=np.float32)
 FX_EPS = 1e-6
 GHOST_TRAIL_COLOR = np.array([1.0, 0.0, 1.0], dtype=np.float32)
 GHOST_TRAIL_ALPHA = 0.55
-BALL_RING_ALPHA = 0.85
-BALL_RING_THICKNESS_PX = 4
-BALL_RING_FEATHER_SIGMA = 0.75
-BALL_RING_INTENSITY_GAMMA = 0.65
+BALL_RING_ALPHA = 2.0  # Increased brightness
+BALL_RING_THICKNESS_PX = 2.0  # Thinner rings
+BALL_RING_FEATHER_SIGMA = 1.0  # Less blurred
+BALL_RING_INTENSITY_GAMMA = 0.5  # Higher contrast (for < 1.0 gamma on mask values)
 
 
 def _maybe_upscale_for_display(image: Image.Image) -> Image.Image:
@@ -1288,9 +1288,12 @@ def _build_ball_ring_mask(state: AppState, frame_idx: int) -> np.ndarray | None:
     max_val = float(ring_mask.max())
     if max_val > FX_EPS:
         ring_mask = ring_mask / max_val
+        
+        # Apply gamma correction (contrast)
         gamma_val = getattr(state, "fx_ring_gamma", BALL_RING_INTENSITY_GAMMA)
         if abs(gamma_val - 1.0) > 1e-6:
             ring_mask = np.power(np.clip(ring_mask, 0.0, 1.0), gamma_val)
+            
     return np.clip(ring_mask, 0.0, 1.0)
 
 
@@ -2844,7 +2847,7 @@ with gr.Blocks(title="SAM2 Video (Transformers) - Interactive Segmentation", the
         with gr.Column(scale=1):
             ball_ring_chk = gr.Checkbox(
                 label="Ball rings (future)",
-                value=True,
+                value=False,
                 info="Replace the ghost trail fill with magenta rings at future ball positions.",
             )
         with gr.Column(scale=1):
@@ -2958,7 +2961,7 @@ with gr.Blocks(title="SAM2 Video (Transformers) - Interactive Segmentation", the
                     minimum=0.0,
                     maximum=5.0,
                     step=0.1,
-                    value=1.5,
+                    value=1.0, # Updated default
                 )
             with gr.Column(scale=1):
                 ring_gamma = gr.Slider(
@@ -2966,7 +2969,8 @@ with gr.Blocks(title="SAM2 Video (Transformers) - Interactive Segmentation", the
                     minimum=0.1,
                     maximum=2.0,
                     step=0.05,
-                    value=0.65, # Default gamma
+                    value=0.5, # Updated default
+                    info="Lower values = higher contrast/sharper falloff"
                 )
     
     with gr.Row():