안진서 - 폐렴/정상 이진 분류
2022.03.30 - 2022.12.31
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  • Overview
    1. Classification of Pneumonia
      • Infection that occurs in the parenchymal tissue s of the lungs
      • Classified into viral and bacterial pneumonia according to the causative organism
      • Chest X-ray is commonly used as screening tools due to their low-cost, easy accessibility, and fast imaging acquisition
    2. Model description
      • Input: Chest X-ray image
      • Output: Pneumonia or Normal (binary classification)
      • Model Architecture: ResNet-50 with attention mechanism (CBAM: Convolutional Block Attention Module)
    3. Performance
      • Quantitative evaluation
      • Qualitative evaluation
      • (a) original image, (b) normalized image, (c) Grad-CAM overlay of ResNet-50 feature map, and (d) Grad-CAM overlay of ResNet-50 with CBAM feature map
  • Limitations
    • This model cannot classify the types of pneumonia (viral, bacterial).
    • It is difficult to classify using images containing areas other than the chest. (In Future work, we will add modules to crop only the lung area)
    • CT, MRI images are not available

 

  • Trade-offs
    • Depending on the resolution of the X-ray image you have, normalization method used for preprocessing may change.
    • EX) z-norm normalizaiton, min-max normalization, histogram equalization, etc.

 

  • Performance
    • Quantitative evaluation: Accuracy, Sensitivity, Specificity, PPV, NPV
    • Qualitative evaluation: Grad-CAM visualization

 

  • Test your own data
    • See how the model works on your own image here (we will not keep a copy) !
    • This function will be added later.

 

  • Provide feedback
    • We’d love your feedback on the information presented in this card and/or the framework we’re exploring here for model reporting.
    • Please also share any unexpected results. ♥

 

참고: https://modelcards.withgoogle.com/face-detection#overview