fix owlvit tests, update docstring examples (#18586)

Author: alaradirik

docs/source/en/model_doc/owlvit.mdx

@@ -57,8 +57,8 @@ OWL-ViT is a zero-shot text-conditioned object detection model. OWL-ViT uses [CL
 ...     box = [round(i, 2) for i in box.tolist()]
 ...     if score >= score_threshold:
 ...         print(f"Detected {text[label]} with confidence {round(score.item(), 3)} at location {box}")
-Detected a photo of a cat with confidence 0.243 at location [1.42, 50.69, 308.58, 370.48]
-Detected a photo of a cat with confidence 0.298 at location [348.06, 20.56, 642.33, 372.61]
+Detected a photo of a cat with confidence 0.707 at location [324.97, 20.44, 640.58, 373.29]
+Detected a photo of a cat with confidence 0.717 at location [1.46, 55.26, 315.55, 472.17]
 ```
 
 This model was contributed by [adirik](https://huggingface.co/adirik). The original code can be found [here](https://github.com/google-research/scenic/tree/main/scenic/projects/owl_vit).

src/transformers/models/owlvit/modeling_owlvit.py

@@ -1323,8 +1323,8 @@ def forward(
         ...     box = [round(i, 2) for i in box.tolist()]
         ...     if score >= score_threshold:
         ...         print(f"Detected {text[label]} with confidence {round(score.item(), 3)} at location {box}")
-        Detected a photo of a cat with confidence 0.243 at location [1.42, 50.69, 308.58, 370.48]
-        Detected a photo of a cat with confidence 0.298 at location [348.06, 20.56, 642.33, 372.61]
+        Detected a photo of a cat with confidence 0.707 at location [324.97, 20.44, 640.58, 373.29]
+        Detected a photo of a cat with confidence 0.717 at location [1.46, 55.26, 315.55, 472.17]
         ```"""
         output_hidden_states = (
             output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states

tests/models/owlvit/test_modeling_owlvit.py

@@ -733,7 +733,6 @@ def prepare_img():
 
 @require_vision
 @require_torch
-@unittest.skip("These tests are broken, fix me Alara")
 class OwlViTModelIntegrationTest(unittest.TestCase):
     @slow
     def test_inference(self):
@@ -763,8 +762,7 @@ def test_inference(self):
             outputs.logits_per_text.shape,
             torch.Size((inputs.input_ids.shape[0], inputs.pixel_values.shape[0])),
         )
-        expected_logits = torch.tensor([[4.4420, 0.6181]], device=torch_device)
-
+        expected_logits = torch.tensor([[3.4613, 0.9403]], device=torch_device)
         self.assertTrue(torch.allclose(outputs.logits_per_image, expected_logits, atol=1e-3))
 
     @slow
@@ -788,7 +786,8 @@ def test_inference_object_detection(self):
 
         num_queries = int((model.config.vision_config.image_size / model.config.vision_config.patch_size) ** 2)
         self.assertEqual(outputs.pred_boxes.shape, torch.Size((1, num_queries, 4)))
+
         expected_slice_boxes = torch.tensor(
-            [[0.0948, 0.0471, 0.1915], [0.3194, 0.0583, 0.6498], [0.1441, 0.0452, 0.2197]]
+            [[0.0691, 0.0445, 0.1373], [0.1592, 0.0456, 0.3192], [0.1632, 0.0423, 0.2478]]
         ).to(torch_device)
         self.assertTrue(torch.allclose(outputs.pred_boxes[0, :3, :3], expected_slice_boxes, atol=1e-4))