Update app.py

app.py

@@ -1,7 +1,46 @@
 import gradio as gr
+from PIL import Image, ImageFilter
 
-def greet(name):
-    return "Hello " + name + "!"
+def enhance_pixel_art(img, downscale_factor, num_colors, blur_radius):
+    """
+    Enhances pixel art by:
+    1. Blurring the image slightly to remove high-frequency artifacts.
+    2. Downsampling the image using a high-quality filter.
+    3. Upscaling back using nearest-neighbor interpolation to preserve blocky pixels.
+    4. Quantizing the image to reduce the number of colors.
+    """
+    # Ensure image is in RGB mode
+    if img.mode != "RGB":
+        img = img.convert("RGB")
+    
+    # Apply a slight Gaussian blur to smooth out artifacts
+    im_blur = img.filter(ImageFilter.GaussianBlur(radius=blur_radius))
+    
+    # Downscale using a high-quality resampling filter (Lanczos)
+    new_size = (max(1, im_blur.width // downscale_factor),
+                max(1, im_blur.height // downscale_factor))
+    im_down = im_blur.resize(new_size, Image.LANCZOS)
+    
+    # Upscale back using nearest-neighbor to maintain a pixelated look
+    im_up = im_down.resize(img.size, Image.NEAREST)
+    
+    # Quantize to reduce the number of colors (using median cut)
+    im_quant = im_up.quantize(colors=num_colors, method=Image.MEDIANCUT, dither=Image.NONE)
+    return im_quant
 
-demo = gr.Interface(fn=greet, inputs="text", outputs="text")
-demo.launch()   
+# Create a Gradio interface with image input, sliders for parameters, and image output.
+iface = gr.Interface(
+    fn=enhance_pixel_art,
+    inputs=[
+        gr.Image(type="pil", label="Input Image"),
+        gr.Slider(2, 8, value=4, step=1, label="Downscale Factor"),
+        gr.Slider(2, 32, value=16, step=1, label="Number of Colors"),
+        gr.Slider(0.0, 5.0, value=0.5, step=0.1, label="Blur Radius")
+    ],
+    outputs=gr.Image(type="pil", label="Enhanced Pixel Art"),
+    title="Pixel Art Enhancer"
+)
+
+# Launch the demo. (In a Hugging Face Space, this script will be run automatically.)
+if __name__ == "__main__":
+    iface.launch()