feat(genai): sample for virtual try on (#13539)

* feat(genai): sample for virtual try on

* fix: spacing

* fix: lint

Author: katiemn

genai/image_generation/imggen_virtual_try_on_with_txt_img.py

@@ -0,0 +1,47 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from google.genai.types import Image
+
+
+def virtual_try_on(output_file: str) -> Image:
+    # [START googlegenaisdk_imggen_virtual_try_on_with_txt_img]
+    from google import genai
+    from google.genai.types import RecontextImageSource, ProductImage
+
+    client = genai.Client()
+
+    # TODO(developer): Update and un-comment below line
+    # output_file = "output-image.png"
+
+    image = client.models.recontext_image(
+        model="virtual-try-on-preview-08-04",
+        source=RecontextImageSource(
+            person_image=Image.from_file(location="test_resources/man.png"),
+            product_images=[ProductImage(product_image=Image.from_file(location="test_resources/sweater.jpg"))]
+        )
+    )
+
+    image.generated_images[0].image.save(output_file)
+
+    print(f"Created output image using {len(image.generated_images[0].image.image_bytes)} bytes")
+    # Example response:
+    # Created output image using 1234567 bytes
+
+    # [END googlegenaisdk_imggen_virtual_try_on_with_txt_img]
+    return image.generated_images[0].image
+
+
+if __name__ == "__main__":
+    virtual_try_on(output_file="test_resources/man_in_sweater.png")

genai/image_generation/requirements.txt

@@ -1,2 +1,2 @@
-google-genai==1.27.0
+google-genai==1.29.0
 pillow==11.1.0

genai/image_generation/test_image_generation.py

@@ -40,6 +40,7 @@
 import imggen_scribble_ctrl_type_with_txt_img
 import imggen_style_reference_with_txt_img
 import imggen_subj_refer_ctrl_refer_with_txt_imgs
+import imggen_virtual_try_on_with_txt_img
 import imggen_with_txt
 
 
@@ -172,6 +173,14 @@ def test_img_customization_canny_edge(output_gcs_uri: str) -> None:
     assert response
 
 
+def test_img_virtual_try_on() -> None:
+    OUTPUT_FILE = os.path.join(RESOURCES, "man_in_sweater.png")
+    response = imggen_virtual_try_on_with_txt_img.virtual_try_on(
+        OUTPUT_FILE
+    )
+    assert response
+
+
 def test_imggen_mmflash_examples() -> None:
     # generate image
     fname = imggen_mmflash_with_txt.generate_content()