Update app.py

app.py

@@ -9,6 +9,7 @@ import insightface
 import numpy as np
 import onnxruntime as ort
 from PIL import Image
+import io
 
 TITLE = "insightface Person Detection"
 DESCRIPTION = "https://github.com/deepinsight/insightface/tree/master/examples/person_detection"
@@ -75,19 +76,27 @@ def convert_to_pil_image(image: np.ndarray) -> Image.Image:
     return Image.fromarray(image)
 
 
+def convert_to_png(image: np.ndarray) -> bytes:
+    """Convert a NumPy image array to PNG bytes."""
+    pil_image = convert_to_pil_image(image)
+    buffer = io.BytesIO()
+    pil_image.save(buffer, format="PNG")
+    return buffer.getvalue()
+
+
 detector = load_model()
 detector.prepare(-1, nms_thresh=0.5, input_size=(640, 640))
 
 
-def detect(image: np.ndarray) -> tuple[Image.Image, list[Image.Image]]:
+def detect(image: np.ndarray) -> tuple[bytes, list[bytes]]:
     image = image[:, :, ::-1]  # RGB -> BGR
     bboxes, vbboxes = detect_person(image, detector)
     res = visualize(image, bboxes, vbboxes)
     person_images = extract_persons(image, bboxes)
-    # Convert the images to PIL Image format
-    result_image = convert_to_pil_image(res[:, :, ::-1])  # BGR -> RGB
-    person_images_pil = [convert_to_pil_image(person_img[:, :, ::-1]) for person_img in person_images]  # BGR -> RGB
-    return result_image, person_images_pil
+    # Convert the images to PNG bytes
+    result_image_bytes = convert_to_png(res[:, :, ::-1])  # BGR -> RGB
+    person_images_bytes = [convert_to_png(person_img[:, :, ::-1]) for person_img in person_images]  # BGR -> RGB
+    return result_image_bytes, person_images_bytes
 
 
 examples = sorted(pathlib.Path("images").glob("*.jpg"))
@@ -95,7 +104,7 @@ examples = sorted(pathlib.Path("images").glob("*.jpg"))
 demo = gr.Interface(
     fn=detect,
     inputs=gr.Image(label="Input", type="numpy"),
-    outputs=[gr.Image(label="Processed Image"), gr.Gallery(label="Detected Persons")],
+    outputs=[gr.Image(label="Processed Image", type="bytes"), gr.Gallery(label="Detected Persons", type="bytes")],
     examples=examples,
     examples_per_page=30,
     title=TITLE,