Page 112 - IJEEE-2022-Vol18-ISSUE-1
P. 112

108 |                                                                                                                     Majid & Ali

approaches. The (COVID-19/Normal) groups were included          2796 out of 500, while the proposed simple CGAN take less
throughout all experimental trials. The generated image to      time and generates 5589 images in only three hours. Saman
data augmentation shows in figure 10.                           Motamed et al. [ 35], This work employed two forms of
                                                                GAN, namely IAGAN and DCGAN, yet the classification
     The approach of the deep detection model was evaluated     accuracy was 80% campier than the proposed method is
on various performance metrics, including accuracy (ACC),       97%. Loey et al. [15], Using a deep convolutional generative
total parameters, and numbers of image generation. Also,        adversarial network to produce synthetic data] employed a
discussed many current deep learning approaches current         CGAN with CT images rather than CXR images. It achieved
deep learning approaches that have been developed               a testing accuracy of 0.82%.
mainly for COVID-19 classification and compared their
performance. Detailed performance metrics for the proposed           CGAN trained on the original dataset that involved two
model and its benchmarked methods are shown in Table V.         classes and then generate images for each category
                                                                depending on (given label). Figure 8 depicts the CGAN
                                                                training process regarding the generator and discriminator's
                                                                loss scores; the generator tries to reduce the loss function as
                                                                much as possible, which may fool a discriminator. CGAN
                                                                generated 2814 COVID-19 images. The number of epochs
                                                                was decided depending on the resolution of the generated
                                                                images, the quality of the produced images increased over
                                                                500 epochs and increased gradually until could generate
                                                                high-resolution images. CGAN was trained for many
                                                                iterations.

Fig.10: Sample the generated high-quality resolution
       covid19 images by the proposed CGAN.

                       TABLE V                                  Fig.11: The output of the CGAN at different time intervals.
  The experiments of the suggested model and
other methodologies are presented in this section.                   Accuracy is a measure of the total number of correct
                                                                predictions produced by the model, and it is defined in the
study             Image   GAN     Mean                          following ways.
                   type   Type   accuracy

                                                                Accuracy =  ( TN + TP )           (2)

Abdul Waheed et                                                             (TN + FP + TP + FN )
       al[14]
                  X-rays  ACGAN  0.95

Loey et al[15]    CT CGAN        0.82                                When dealing with deep learning classification
                                                                situations where the output may be divided into two or more
                                                                classes, the Confusion Matrix is used as a performance
                                                                evaluation.

Amal Al-Shargabi  X-rays  CGAN   99.7
      et al[16]
                                 0.92
Mohd Asyraf et    X-rays  DCGAN  0.80
     al[17]                      0.80
                          IAGAN  0.97
Saman Motamed et  X-rays      +
        al[35]
                          DCGAN

proposed model X-rays CGAN

     Table V describes the evaluation of the present detection  Fig.12: Confusion matrix with Covid-19 diagnosis using
models, the suggested augmented deep model, on the other        CNN, utilizing synthetic data and actual data as inputs.
hand, was developed using X-ray images of the chest and a
huge number of samples. Amal Al-Shargabi et al. [16],
although the classification accuracy is high at 99%, the
CGAN used takes a lot of time to train. It needs 16:05:55 to
generate images; the number of images generated is only
   107   108   109   110   111   112   113   114   115   116   117