Purdue University Graduate School
Chandra Thesis.pdf (1.22 MB)

Skin lesion detection using deep learning

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posted on 2022-05-06, 13:18 authored by Rajit ChandraRajit Chandra

Skin lesion can be deadliest if not detected early. Early detection of skin lesion can save many lives. Artificial Intelligence and Machine learning is helping healthcare in many ways and so in the diagnosis of skin lesion. Computer aided diagnosis help clinicians in detecting the cancer. The study was conducted to classify the seven classes of skin lesion using very powerful convolutional neural networks. The two pre trained models i.e., DenseNet and Incepton-v3 were employed to train the model and accuracy, precision, recall, f1score and ROC-AUC was calculated for every class prediction. Moreover, gradient class activation maps were also used to aid the clinicians in determining what are the regions of image that influence model to make a certain decision. These visualizations are used for explainability of the model. Experiments showed that DenseNet performed better then Inception V3. Also it was noted that gradient class activation maps highlighted different regions for predicting same class. The main contribution was to introduce medical aided visualizations in lesion classification model that will help clinicians in understanding the decisions of the model. It will enhance the reliability of the model. Also, different optimizers were employed with both models to compare the accuracies.


Degree Type

  • Master of Science


  • Computer Science

Campus location

  • Fort Wayne

Advisor/Supervisor/Committee Chair

Mohammadreza Hajiarbabi

Additional Committee Member 2

Venkata Inukollu

Additional Committee Member 3

Yihao Deng