scholarly journals Interpretability of a Deep Learning Based Approach for the Classification of Skin Lesions into Main Anatomic Body Sites

Cancers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 6048
Author(s):  
Joanna Jaworek-Korjakowska ◽  
Andrzej Brodzicki ◽  
Bill Cassidy ◽  
Connah Kendrick ◽  
Moi Hoon Yap

Over the past few decades, different clinical diagnostic algorithms have been proposed to diagnose malignant melanoma in its early stages. Furthermore, the detection of skin moles driven by current deep learning based approaches yields impressive results in the classification of malignant melanoma. However, in all these approaches, the researchers do not take into account the origin of the skin lesion. It has been observed that the specific criteria for in situ and early invasive melanoma highly depend on the anatomic site of the body. To address this problem, we propose a deep learning architecture based framework to classify skin lesions into the three most important anatomic sites, including the face, trunk and extremities, and acral lesions. In this study, we take advantage of pretrained networks, including VGG19, ResNet50, Xception, DenseNet121, and EfficientNetB0, to calculate the features with an adjusted and densely connected classifier. Furthermore, we perform in depth analysis on database, architecture, and result regarding the effectiveness of the proposed framework. Experiments confirm the ability of the developed algorithms to classify skin lesions into the most important anatomical sites with 91.45% overall accuracy for the EfficientNetB0 architecture, which is a state-of-the-art result in this domain.

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3046
Author(s):  
Shervin Minaee ◽  
Mehdi Minaei ◽  
Amirali Abdolrashidi

Facial expression recognition has been an active area of research over the past few decades, and it is still challenging due to the high intra-class variation. Traditional approaches for this problem rely on hand-crafted features such as SIFT, HOG, and LBP, followed by a classifier trained on a database of images or videos. Most of these works perform reasonably well on datasets of images captured in a controlled condition but fail to perform as well on more challenging datasets with more image variation and partial faces. In recent years, several works proposed an end-to-end framework for facial expression recognition using deep learning models. Despite the better performance of these works, there are still much room for improvement. In this work, we propose a deep learning approach based on attentional convolutional network that is able to focus on important parts of the face and achieves significant improvement over previous models on multiple datasets, including FER-2013, CK+, FERG, and JAFFE. We also use a visualization technique that is able to find important facial regions to detect different emotions based on the classifier’s output. Through experimental results, we show that different emotions are sensitive to different parts of the face.


2022 ◽  
Vol 10 (1) ◽  
pp. 0-0

Effective productivity estimates of fresh produced crops are very essential for efficient farming, commercial planning, and logistical support. In the past ten years, machine learning (ML) algorithms have been widely used for grading and classification of agricultural products in agriculture sector. However, the precise and accurate assessment of the maturity level of tomatoes using ML algorithms is still a quite challenging to achieve due to these algorithms being reliant on hand crafted features. Hence, in this paper we propose a deep learning based tomato maturity grading system that helps to increase the accuracy and adaptability of maturity grading tasks with less amount of training data. The performance of proposed system is assessed on the real tomato datasets collected from the open fields using Nikon D3500 CCD camera. The proposed approach achieved an average maturity classification accuracy of 99.8 % which seems to be quite promising in comparison to the other state of art methods.


Author(s):  
Simone Bonechi ◽  
Monica Bianchini ◽  
Pietro Bongini ◽  
Giorgio Ciano ◽  
Giorgia Giacomini ◽  
...  
Keyword(s):  

Politik ◽  
1970 ◽  
Vol 19 (4) ◽  
Author(s):  
Kanar Patruss

This article deals with ISIS’s beheading videos of Western victims from 2014 and inscribes itself into an emerging body of literature on visuality in IR. The paper contends that the image of ISIS beheadings has been mobilized in a Western political discourse that classifies ISIS as evil, and has hereby helped shape the conditions under which international politics operate. The article offers a Nietzsche-inspired critique of the value judgment of evil in the Western discourse and, in extension, seeks to nuance the assessment of ISIS through a ‘re-reading’ of the beheading image. For this purpose, the article proposes to expand Lene Hansen’s concept of inter-iconicity to capture how an icon’s meaning is produced in relation to other icons and, in this light, explores the inter-iconic relations between the image of ISIS beheadings, on the one hand, and the decapitations of the French Revolution and the image of the ‘body politic’, on the other. The inter-iconic reading draws out alternative meanings of the image of ISIS beheadings that counter the classification of ISIS as evil, thereby expanding the conditions for political speech and action regarding ISIS and opening up space for a broader critique of politically motivated violence. 


2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Angelo Alberto Leto Barone ◽  
Matteo Rossi ◽  
Gabriele Giunta ◽  
Marco Carmisciano ◽  
Luigi Di Rosa ◽  
...  

The eyebrow region is of utmost importance for facial movement, symmetry, and the overall cosmetic appearance of the face. Trauma or tumor resection often leave scars that may dislocate the eyebrow producing an alteration both in static symmetry of the face and in the dynamic expressivity. The authors present a technique for eyebrow’s defects repair using the remaining eyebrow advancement by means of a “freestyle-like” V-Y flap. In the past two years a total of eight consecutive patients underwent excision of skin lesions in the superciliary region and immediate reconstruction with this technique. On histology, six patients were affected from basal cell carcinomas, one from squamous cell carcinoma, and one from congenital intradermal melanocytic nevus. The pedicle of the flap included perforators from the supratrochlear, supraorbital, or superficial temporalis artery. Advancement of the entire aesthetic subunit that includes the eyebrow using a V-Y perforator flap was performed successfully in all cases achieving full, tension-free closure of defects up to 3.0 cm. “Freestyle-like” V-Y flaps should be considered as a first-line choice for partial defects of the eyebrow. The greater mobility compared to random subcutaneous flaps allows to reconstruct large defects providing an excellent cosmetic result.


1924 ◽  
Vol 44 (2) ◽  
pp. 223-253
Author(s):  
Charles Walston

It is hardly necessary to attempt a definition of what is meant by ‘the classical type’ in the body or in the face. Ordinary people know what they mean when they speak of a ‘classical face,’ ‘regular features,’ or ‘a perfectly made man or woman’ as regards the nude figure. Even though such people may have but a slight familiarity with Greek or Graeco-Roman statues and busts, or have never even actually perceived, themselves, the distinctive characteristics of the classical type, they have had it conveyed to them indirectly through the work of modern artists and illustrators of books or advertisements, or even in the attenuated and vulgarised renderings on chocolate boxes. No doubt we are now living in revolt and reaction against this type of beauty and normality, as in the past there have been periodic reactions against the dominance of the classic types, whether in ‘realistic’ or ‘romantic’ movements, throughout the historical development of art since the classical age. The fact, however, remains, that the standards of proportion and inter-relation between the parts of the body and between the features of the human head, as embodied in the classic type, still determine the taste of, at least, the Western world.


2018 ◽  
Vol 10 (1) ◽  
pp. 35-40
Author(s):  
Shi Yao Sam Yang ◽  
Wai Mun Sean Leong ◽  
Cruz Maria Teresa Kasunuran ◽  
Jing Xiang Huang ◽  
Sue-Ann Ju Ee Ho ◽  
...  

Leprosy is also known as Hansen disease, as in some countries the diagnosis of leprosy carries a negative stigma and patients fear being shunned as outcasts. Presently, leprosy is primarily limited to specific geographical regions in resource-poor countries. As a result, there is increased difficulty for the younger generation of physicians today to correctly identify leprosy due to a lack of exposure and a low-index of suspicion, particularly in developed countries. In this case, the indurated lesions over the face demonstrated a preference for the outer lateral aspects over the maxillary areas, the nose bridge, and the pinna of the ears consistent with the organism’s preference for cooler regions of the body. This was also evident in the other skin lesions affecting the more acral regions of the limbs in the early stage of disease progression. There is a need to keep this infective condition as an alternate diagnosis to all unusual cutaneous lesions.


Sign in / Sign up

Export Citation Format

Share Document