Create app.py

app.py

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+"""
+Image Enhancement Lab — Gradio Interface
+-----------------------------------------
+Install dependencies:
+    pip install gradio pillow numpy
+
+Run:
+    python image_enhancer.py
+"""
+
+import gradio as gr
+import numpy as np
+import tempfile
+from PIL import Image, ImageEnhance, ImageFilter
+
+
+def apply_enhancements(image, contrast, sharpness, brightness, saturation, upscale, blur_radius):
+    if image is None:
+        return None, None
+    original = Image.fromarray(image).convert("RGB")
+    enhanced = original.copy()
+    if upscale != 1.0:
+        w, h = enhanced.size
+        enhanced = enhanced.resize((int(w * upscale), int(h * upscale)), Image.LANCZOS)
+    enhanced = ImageEnhance.Contrast(enhanced).enhance(contrast)
+    enhanced = ImageEnhance.Brightness(enhanced).enhance(brightness)
+    enhanced = ImageEnhance.Color(enhanced).enhance(saturation)
+    enhanced = ImageEnhance.Sharpness(enhanced).enhance(sharpness)
+    if blur_radius > 0:
+        enhanced = enhanced.filter(ImageFilter.GaussianBlur(radius=blur_radius))
+    return np.array(original), np.array(enhanced)
+
+
+def save_enhanced(image, contrast, sharpness, brightness, saturation, upscale, blur_radius):
+    _, enh_np = apply_enhancements(image, contrast, sharpness, brightness, saturation, upscale, blur_radius)
+    if enh_np is None:
+        return None
+    tmp = tempfile.NamedTemporaryFile(suffix=".png", delete=False)
+    Image.fromarray(enh_np).save(tmp.name)
+    return tmp.name
+
+
+def build_app():
+    with gr.Blocks(title="Image Enhancement Lab") as demo:
+        gr.Markdown("# Image Enhancement Lab")
+        gr.Markdown("Upload an image and adjust sliders — preview updates in real time.")
+
+        with gr.Row():
+            with gr.Column(scale=1, min_width=280):
+                image_input = gr.Image(label="Upload Image", type="numpy", sources=["upload", "webcam", "clipboard"])
+                contrast_slider   = gr.Slider(0.1, 3.0,  value=1.0, step=0.05, label="Contrast  (1.0 = original)")
+                brightness_slider = gr.Slider(0.1, 3.0,  value=1.0, step=0.05, label="Brightness  (1.0 = original)")
+                saturation_slider = gr.Slider(0.0, 3.0,  value=1.0, step=0.05, label="Saturation  (0 = grayscale)")
+                sharpness_slider  = gr.Slider(0.0, 5.0,  value=1.0, step=0.1,  label="Sharpness  (0 = blurry)")
+                upscale_slider    = gr.Slider(0.25, 4.0, value=1.0, step=0.25, label="Upscale Factor")
+                blur_slider       = gr.Slider(0.0, 10.0, value=0.0, step=0.25, label="Gaussian Blur Radius  (0 = off)")
+
+                with gr.Row():
+                    reset_btn = gr.Button("Reset",  variant="secondary")
+                    apply_btn = gr.Button("Apply",  variant="primary")
+
+                save_btn      = gr.Button("Download Enhanced Image", variant="secondary")
+                download_file = gr.File(label="Enhanced image", visible=False)
+
+            with gr.Column(scale=2):
+                reference_output = gr.Image(label="Reference (original)", type="numpy", interactive=False)
+                enhanced_output  = gr.Image(label="Enhanced Preview",     type="numpy", interactive=False)
+
+        all_inputs  = [image_input, contrast_slider, sharpness_slider, brightness_slider, saturation_slider, upscale_slider, blur_slider]
+        all_outputs = [reference_output, enhanced_output]
+
+        for ctrl in [contrast_slider, sharpness_slider, brightness_slider, saturation_slider, upscale_slider, blur_slider, image_input]:
+            ctrl.change(fn=apply_enhancements, inputs=all_inputs, outputs=all_outputs)
+
+        apply_btn.click(fn=apply_enhancements, inputs=all_inputs, outputs=all_outputs)
+
+        def reset_all():
+            return None, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, None, None
+
+        reset_btn.click(fn=reset_all, outputs=[image_input, contrast_slider, sharpness_slider, brightness_slider, saturation_slider, upscale_slider, blur_slider, reference_output, enhanced_output])
+
+        save_btn.click(fn=save_enhanced, inputs=all_inputs, outputs=download_file)
+
+    return demo
+
+
+if __name__ == "__main__":
+    app = build_app()
+    app.launch(share=False, server_name="127.0.0.1", server_port=7860)