Upload process_dataset.py

scripts/process_dataset.py

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+"""This script processes the dataset provided by the PathVQA authors. This script drops the duplicate
+image-question-answer triplets, converts the images to bytes, and saves the dataset to a parquet file.
+"""
+
+import io
+import pickle
+import pandas as pd
+from PIL import Image
+from tqdm import tqdm
+
+# loop across the splits
+for split in ["train", "val", "test"]:
+    
+    # load the image-question-answer triplets
+    data = pd.DataFrame(pickle.load(open(f"pvqa/qas/{split}/{split}_qa.pkl", "rb")))
+    print(f"Total number of triplets in {split} set: {format(data.shape[0], ',.0f')}")
+    
+    # drop the duplicate image-question-answer triplets
+    data = data.drop_duplicates(ignore_index=True)
+    print(f"Unique number of triplets in {split} set: {format(data.shape[0], ',.0f')}")
+    
+    # load the images as bytes
+    print(f"Loading {split} set images...")
+    images = {}
+    for image in tqdm(data["image"].unique()):
+        img = Image.open(f"pvqa/images/{split}/{image}.jpg")
+        byt = io.BytesIO()
+        img.save(byt, format="jpeg")
+        byt = byt.getvalue()
+        images[image] = {"path": None, "bytes": byt}
+    print(f"Unique number of images in {split} set: {format(len(images), ',.0f')}")
+    
+    # save the data to a parquet file
+    print(f"Writing data to data/{split}.parquet...")
+    dataset = []
+    for _, row in data.iterrows():
+        dataset.append({
+            "image": images[row["image"]],
+            "question": row["question"],
+            "answer": row["answer"]
+        })
+    pd.DataFrame(dataset).to_parquet(f"data/{split}.parquet")
+    print("Done")
+    print("---------------------------------")
+    
+'''
+Total number of triplets in train set: 19,755
+Unique number of triplets in train set: 19,654
+Loading train set images...
+100%|██████████| 2599/2599 [00:46<00:00, 56.27it/s]
+Unique number of images in train set: 2,599
+Writing data to data/train.parquet...
+Done
+---------------------------------
+Total number of triplets in val set: 6,279
+Unique number of triplets in val set: 6,259
+Loading val set images...
+100%|██████████| 832/832 [00:13<00:00, 59.49it/s]
+Unique number of images in val set: 832
+Writing data to data/val.parquet...
+Done
+---------------------------------
+Total number of triplets in test set: 6,761
+Unique number of triplets in test set: 6,719
+Loading test set images...
+100%|██████████| 858/858 [00:15<00:00, 53.93it/s]
+Unique number of images in test set: 858
+Writing data to data/test.parquet...
+Done
+'''