Create app.py (#1)

- Create app.py (5fa5329467d0c9e2be74453d25000d7e67e55c15)

app.py

@@ -0,0 +1,78 @@
+import numpy as np
+from PIL import Image
+import torch
+from torchvision import transforms
+import gradio as gr
+from src.image_prep import canny_from_pil
+from src.pix2pix_turbo import Pix2Pix_Turbo
+
+model = Pix2Pix_Turbo("edge_to_image")
+
+
+def process(input_image, prompt, low_threshold, high_threshold):
+    # resize to be a multiple of 8
+    new_width = input_image.width - input_image.width % 8
+    new_height = input_image.height - input_image.height % 8
+    input_image = input_image.resize((new_width, new_height))
+    canny = canny_from_pil(input_image, low_threshold, high_threshold)
+    with torch.no_grad():
+        c_t = transforms.ToTensor()(canny).unsqueeze(0).cuda()
+        output_image = model(c_t, prompt)
+        output_pil = transforms.ToPILImage()(output_image[0].cpu() * 0.5 + 0.5)
+    # flippy canny values, map all 0s to 1s and 1s to 0s
+    canny_viz = 1 - (np.array(canny) / 255)
+    canny_viz = Image.fromarray((canny_viz * 255).astype(np.uint8))
+    return canny_viz, output_pil
+
+
+if __name__ == "__main__":
+    # load the model
+    with gr.Blocks() as demo:
+        gr.Markdown("# Pix2pix-Turbo: **Canny Edge -> Image**")
+        with gr.Row():
+            with gr.Column():
+                input_image = gr.Image(sources="upload", type="pil")
+                prompt = gr.Textbox(label="Prompt")
+                low_threshold = gr.Slider(
+                    label="Canny low threshold",
+                    minimum=1,
+                    maximum=255,
+                    value=100,
+                    step=10,
+                )
+                high_threshold = gr.Slider(
+                    label="Canny high threshold",
+                    minimum=1,
+                    maximum=255,
+                    value=200,
+                    step=10,
+                )
+                run_button = gr.Button(value="Run")
+            with gr.Column():
+                result_canny = gr.Image(type="pil")
+            with gr.Column():
+                result_output = gr.Image(type="pil")
+
+        prompt.submit(
+            fn=process,
+            inputs=[input_image, prompt, low_threshold, high_threshold],
+            outputs=[result_canny, result_output],
+        )
+        low_threshold.change(
+            fn=process,
+            inputs=[input_image, prompt, low_threshold, high_threshold],
+            outputs=[result_canny, result_output],
+        )
+        high_threshold.change(
+            fn=process,
+            inputs=[input_image, prompt, low_threshold, high_threshold],
+            outputs=[result_canny, result_output],
+        )
+        run_button.click(
+            fn=process,
+            inputs=[input_image, prompt, low_threshold, high_threshold],
+            outputs=[result_canny, result_output],
+        )
+
+    demo.queue()
+    demo.launch(debug=True, share=False)