---
license: cc-by-4.0
task_categories:
- question-answering
tags:
- 3D vision
- embodied AI
size_categories:
- 10K<n<100K
---

SQA3D: Situated Question Answering in 3D Scenes (ICLR 2023, https://arxiv.org/abs/2210.07474)
===
1. Download the [SQA3D dataset](https://zenodo.org/record/7544818/files/sqa_task.zip?download=1) under `assets/data/`. The following files should be used:

  ```
  ./assets/data/sqa_task/balanced/*
  ./assets/data/sqa_task/answer_dict.json
  ```

2. The dataset has been splited into `train`, `val` and `test`. For each category, we offer both question file, ex. `v1_balanced_questions_train_scannetv2.json`, and annotations, ex. `v1_balanced_sqa_annotations_train_scannetv2.json`

  - The format of question file:
      Run the following code:
      ```python
      import json
      q = json.load(open('v1_balanced_questions_train_scannetv2.json', 'r'))
      # Print the total number of questions
      print('#questions: ', len(q['questions']))
      print(q['questions'][0])
      ```
      The output is:
      ```json
      {
        "alternative_situation": 
          [
            "I stand looking out of the window in thought and a radiator is right in front of me.",
            "I am looking outside through the window behind the desk."
          ],
        "question": "What color is the desk to my right?",
        "question_id": 220602000000,
        "scene_id": "scene0380_00",
        "situation": "I am facing a window and there is a desk on my right and a chair behind me."
      }
      ```
      The following fileds are **useful**: `question`, `question_id`, `scene_id`, `situation`.
      
  - The format of annotations:
      Run the following code:
      ```python
      import json
      a = json.load(open('v1_balanced_sqa_annotations_train_scannetv2.json', 'r'))
      # Print the total number of annotations, should be the same as questions
      print('#annotations: ', len(a['annotations']))
      print(a['annotations'][0])
      ```
      The output is
      ```json
      {
        "answer_type": "other",
        "answers": 
          [
            {
              "answer": "brown", 
              "answer_confidence": "yes", 
              "answer_id": 1
            }
          ],
        "position": 
          {
            "x": -0.9651003385573296,
            "y": -1.2417634435553606,
            "z": 0
          },
        "question_id": 220602000000,
        "question_type": "N/A",
        "rotation": 
          {
            "_w": 0.9950041652780182,
            "_x": 0,
            "_y": 0,
            "_z": 0.09983341664682724
          },
        "scene_id": "scene0380_00"
      }
      ```
      The following fields are **useful**: `answers[0]['answer']`, `question_id`, `scene_id`.
      **Note**: To find the answer of a question in the question file, you need to use lookup with `question_id`.

3. We provide the mapping between answers and class labels in `answer_dict.json`
  ```python
  import json
  j = json.load(open('answer_dict.json', 'r'))
  print('Total classes: ', len(j[0]))
  print('The class label of answer \'table\' is: ', j[0]['table'])
  print('The corresponding answer of class 123 is: ', j[1]['123'])
  ```

4. Loader, model and training code can be found at https://github.com/SilongYong/SQA3D