enhance diagnostic accuracy and minimize
computational costs.
The diagnosis of skin cancer primarily involves
the optimization of CNN architectures such as
Inception-V3 and InceptionResNet-V2, which
demonstrate significant depth and accuracy in image
classification tasks. The combination of
InceptionResNet-V2 and InceptionV3, along with
data augmentation, resulted in significant accuracy
improvements to address class imbalance in the
HAM10000 dataset. This method achieved diagnostic
accuracy comparable to that of dermatology
specialists through the fine-tuning of network layers.
Improving feature extraction to reduce reliance on
expert manual segmentation represents a significant
research focus. High-resolution image synthesis is
achievable through techniques such as Enhanced
Super-Resolution Generative Adversarial Networks
(ESRGANs), which have shown to improve CNN
performance for complex medical images, including
skin lesions. This method enhances the quality of the
input image, which is crucial for detecting subtle
morphological changes in lesions. Traditional
machine learning models for skin lesion data have
primarily relied on handcrafted feature extraction, yet
these approaches exhibit limitations in scalability and
adaptability. CNNs can automatically identify
complex patterns, which is particularly beneficial in
various datasets, including those related to melanoma
and basal cell carcinoma.
Numerous comparative studies indicate that deep
learning techniques generally outperform traditional
machine learning methods in the diagnosis of skin
cancer, particularly when substantial labeled datasets
are accessible. Transfer learning using pre-trained
weights from larger image datasets with models such
as DenseNet, Xception, and MobileNet is widely
adopted due to its ability to facilitate efficient
generalization with reduced data requirements. The
issues of class imbalance, data scarcity, and feature
complexity in dermoscopic datasets are being tackled
through the integration of robust CNN architectures
with GAN-based pre-processing techniques. Future
research should focus on enhancing high-accuracy
skin cancer diagnostic models for resource-limited
environments to improve global access.
(H. K. Gajera, et, al, 2022) notes that conventional
diagnostic techniques often rely on the subjective and
time-consuming evaluation of dermoscopy images by
experts. Convolutional neural networks (CNNs), a
category within deep learning (DL), have recently
gained prominence as an effective method for
automating the detection of skin cancer.
Convolutional Neural Networks (CNNs) have been
widely employed in the analysis of dermoscopy
images due to their ability to learn intricate patterns
that facilitate the differentiation between benign and
malignant tumors. CNNs face challenges stemming
from considerable intra-class variation and inter-class
similarity among skin lesion types, in addition to
insufficient and diverse training data. CNN-based
models typically necessitate a substantial number of
parameters, rendering them resource-intensive and
potentially inappropriate for practical clinical
applications.
Transfer learning employs feature representations
derived from large datasets to enhance performance
on smaller datasets, like those pertaining to
melanoma. Recent studies have utilized pretrained
CNN architectures to tackle some of these challenges.
To enhance accuracy, various CNN architectures,
including DenseNet, ResNet, and Inception, have
shown potential in classifying skin lesions. This is
particularly applicable when combined with other
classifiers, such as multi-layer perceptrons (MLPs).
The utilization of learned feature maps that capture
high-level visual cues relevant to melanoma detection
enables these pretrained models to mitigate issues
related to data scarcity. Research indicates that
employing image preprocessing techniques such as
normalization and boundary localization is crucial for
improving model performance. These methods
enhance the capacity of CNNs to identify and
distinguish subtle details in lesion images by reducing
noise and standardizing image quality.
Comprehensive comparisons of features from various
CNN architectures indicate that DenseNet-121 is
highly effective in melanoma detection. DenseNet-
121, in conjunction with MLP classifiers, attains
accuracy rates of 98.33%, 80.47%, 81.16%, and 81%
on benchmark datasets including PH, ISIC 2016, ISIC
2017, and HAM10000, demonstrating state-of-the-
art performance. The unique architecture of
DenseNet, which minimizes redundant feature
learning and enhances feature reuse among layers, is
responsible for this success.
The results underscore the importance of selecting
depend- able CNN architectures and effective
preprocessing methods for melanoma classification.
Anticipated advancements in the discipline will arise
from ongoing research into transfer learning, coupled
with comprehensive CNN feature analysis and
boundary-based preprocessing techniques.
Automated deep learning systems have the potential
to become an effective method for widespread
melanoma detection, provided that researchers
address existing challenges, thereby facilitating rapid
and straightforward diagnosis.