In this article, we explore the advancements in skin cancer detection using deep learning, focusing on how we improved upon an existing approach presented in a recent IEEE paper. The original study utilized the ISIC dataset, which contained just two classes and a total of 2,539 images. The researchers employed a custom Convolutional Neural Network (CNN) model and achieved an accuracy of approximately 88%. While this was a significant achievement, we identified several research gaps that could be addressed to enhance the model's performance and reliability. Notably, the original paper did not address the issues of dataset imbalance or the challenges of overfitting and underfitting. Additionally, the study relied solely on a single custom CNN model, leaving room for improvement by exploring other models and techniques.
To bridge these gaps, we proposed an enhanced approach with two key strategies:
**1. Data Augmentation:**
One of the major challenges in the original study was the imbalance in the dataset, which can lead to biased model predictions. To overcome this, we employed data augmentation techniques to balance the dataset. By generating additional images through augmentation, we ensured that each class had 2,500 images, thereby significantly increasing the dataset size and diversity. This approach not only addressed the imbalance issue but also contributed to more robust model training, enabling the model to generalize better across different skin cancer types.
**2. Transfer Learning:**
Instead of relying solely on a custom CNN model, we explored the use of transfer learning, a technique that leverages pre-trained models that have already learned features from large datasets. We tested five different transfer learning models—ResNet50, EfficientNet, VGG16, VGG19, and DenseNet. These models are known for their high performance in image classification tasks and provided several advantages, including faster training times and improved accuracy. By utilizing these advanced models, we were able to achieve significantly better results compared to the original study.
**Our Results:**
The results of our approach were outstanding. We consistently achieved training accuracies exceeding 99% across all five models. Furthermore, the validation and test accuracies were consistently above 90%, demonstrating the effectiveness of our methods. These results clearly indicate that our approach not only surpasses the original study but also offers a more reliable and scalable solution for skin cancer detection using deep learning.
**Interested in Learning More?**
If you're interested in exploring our approach further or want to implement similar techniques in your own projects, feel free to contact us. We offer full access to the code and documentation, and we're here to support your research and development needs.
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