Ayushman72
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pipeline_tag: text-to-image
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tags:
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---
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This model
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---
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pipeline_tag: text-to-image
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tags:
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- image captioing
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- vit
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- gpt
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- gpt2
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- torch
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---
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# Image Captioning using ViT and GPT2 architecture
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This is my attempt to make a transformer model which takes image as the input and provides a caption for the image
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## Model Architecture
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It comprises of 12 ViT encoder and 12 GPT2 decoders
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![Model Architecture](images/model.png)
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## Training
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The model was trained on the dataset Flickr30k which comprises of 30k images and 5 captions for each image
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The model was trained for 8 epochs (which took 10hrs on kaggle's P100 GPU)
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## Results
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The model acieved a BLEU-4 score of 0.2115, CIDEr score of 0.4, METEOR score of 0.25, and SPICE score of 0.19 on the Flickr8k dataset
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These are the loss curves.
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![Loss graph](images/loss.png)
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![perplexity graph](images/perplexity.png)
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## Predictions
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To predict your own images download the models.py, predict.py and the requirements.txt and then run the following commands->
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`pip install -r requirements.txt`
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`python predict.py`
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*Predicting for the first time will take time as it has to download the model weights (1GB)*
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Here are a few examples of the prediction done on the Validation dataset
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![Test 1](images/test1.png)
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![Test 2](images/test2.png)
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![Test 3](images/test3.png)
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![Test 4](images/test4.png)
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![Test 5](images/test5.png)
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![Test 6](images/test6.png)
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![Test 7](images/test7.png)
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![Test 8](images/test8.png)
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![Test 9](images/test9.png)
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As we can see these are not the most amazing predictions. The performance could be improved by training it further and using an even bigger dataset like MS COCO (500k captioned images)
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## FAQ
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Check the [full notebook](./imagecaptioning.ipynb) or [Kaggle](https://www.kaggle.com/code/ayushman72/imagecaptioning)
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Download the [weights](https://drive.google.com/file/d/1X51wAI7Bsnrhd2Pa4WUoHIXvvhIcRH7Y/view?usp=drive_link) of the model
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