Create image_alter.py

image_alter.py

@@ -0,0 +1,60 @@
+import gradio as gr
+import numpy as np
+from PIL import Image
+
+def create_ghost_image(cover, reveal):
+    if cover is None or reveal is None:
+        return None
+
+    # 1. Convert to Grayscale ('L')
+    img1_raw = cover.convert('L')
+    img2_raw = reveal.convert('L')
+
+    # 2. Resize the reveal image to match the cover image size precisely
+    if img1_raw.size != img2_raw.size:
+        img2_raw = img2_raw.resize(img1_raw.size, Image.LANCZOS)
+
+    # 3. Math Processing (Numpy)
+    g1 = np.array(img1_raw, dtype=float) / 255.0
+    g2 = np.array(img2_raw, dtype=float) / 255.0
+
+    # Squash Image 1 (Cover) into the darker half (0.0 - 0.5)
+    g1 = g1 * 0.5
+
+    # Squash Image 2 (Reveal) into the brighter half (0.5 - 1.0)
+    g2 = 0.5 + (g2 * 0.5)
+
+    # Calculate Alpha
+    out_alpha = 1.0 - g2 + g1
+
+    # Calculate Grayscale
+    # Handle division by zero safely
+    out_gray = np.divide(g1, out_alpha, out=np.zeros_like(g1), where=out_alpha > 0.001)
+
+    # 4. Convert back to integer pixel data
+    final_alpha_int = (out_alpha * 255).clip(0, 255).astype(np.uint8)
+    final_gray_int = (out_gray * 255).clip(0, 255).astype(np.uint8)
+
+    # 5. Stack channels (R, G, B, A)
+    rgba_data = np.dstack((final_gray_int, final_gray_int, final_gray_int, final_alpha_int))
+    
+    return Image.fromarray(rgba_data, 'RGBA')
+
+# --- Gradio UI Setup ---
+with gr.Blocks(title="Ghost Image Generator") as demo:
+    gr.Markdown("# 👻 Ghost Image Generator")
+    gr.Markdown("Create an image that looks different in Light Mode vs Dark Mode (Transparency Trick).")
+    
+    with gr.Row():
+        with gr.Column():
+            img_dark = gr.Image(type="pil", label="Image seen in DARK Mode (Cover)")
+            img_light = gr.Image(type="pil", label="Image seen in LIGHT Mode (Reveal)")
+            btn = gr.Button("Generate Ghost Image", variant="primary")
+        
+        with gr.Column():
+            output_img = gr.Image(label="Result (Download and test in Discord/Twitter)", type="pil", show_download_button=True)
+
+    btn.click(fn=create_ghost_image, inputs=[img_dark, img_light], outputs=output_img)
+
+# Launch the app
+demo.launch()