Image Downsizing and Compression Impacts on AI-based Medical Image Classification

Authors

DOI:

https://doi.org/10.14209/jcis.2026.2

Keywords:

machine learning, image classification, compression, JPEG, JPEG2000, downsizing

Abstract

In recent years machine learning has been used for automatic medical image diagnosis. Solutions leveraging machine
learning can help physicians in the diagnosis process and also reduce the time spent by medical experts analyzing images and
video frames in order to conclude their assessments. In the application scenario considered in this work, the image is captured
in a resource-constrained remote basic health facility and sent to the inference model on the cloud that returns the result to the
physician. We investigate the impact of straightforward low-bit-rate image coding solutions on the classification performance of
neural network models targeted at cloud-based image diagnosis solutions. Our experiments show that it is possible to lower
the bit rate needs without significant harm to the prediction accuracy of the models using both downsizing and compression.
Thus, providing evidence for the viability of deploying automated diagnostic systems as a Service over constrained communication
infrastructure to assist remote areas.

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Author Biographies

Edson Hung, UnB

Edson M. Hung received the Eng., M.Sc., and D.Sc. degrees from the Dept. of Electrical Engineering
at Universidade de Brasilia (UnB), Brazil, in 2004, 2007, and 2012, respectively. He is currently an
Associate Professor at Universidade de Brasília. His work at UnB has been or is being funded by agencies
such as CNPq, CAPES, FAP-DF, and companies such as Hewlett-Packard, Eletronorte, Leucotron,
Toledo do Brasil, Google, ID-Scan, Saab, Petrobrás, and Samsung. He has experience in project development focusing on Signal Processing, Machine Learning, and Electronics. Since 2018, he has been a member of the Joint Picture Experts Group (JPEG) and the Motion Picture Experts Group (MPEG) from the International Organization for Standardization (ISO) and the International Telecommunication Union (ITU). He has also been a member of the Focus Group on Artificial Intelligence for Health (AI4H) of the World Health Organization (WHO) since February 2020.

Renam Silva, UnB

Renam C. da Silva (Member, IEEE) received the degree in mechatronics engineering from the Universidade do Estado do Amazonas, Brazil, in 2010, and the M.Sc. and D.Sc. degrees in electrical engineering from Universidade Federal do Rio de Janeiro, in 2013 and 2018, respectively. He is currently with the Electrical Engineering Department, Universidade de Brası́lia. His research interests include multimedia signal processing, image and video compression, and artificial intelligence and deep learning.

Andrey dos Reis, UnB

Master student

Darlington Akogo, Gudra Studio

Engineer

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Published

2026-01-29

How to Cite

Hung, E., Silva, R., dos Reis, A., & Akogo, D. (2026). Image Downsizing and Compression Impacts on AI-based Medical Image Classification. Journal of Communication and Information Systems, 41(1), 16–25. https://doi.org/10.14209/jcis.2026.2

Issue

Section

Regular Papers
Received 2025-05-19
Accepted 2026-01-15
Published 2026-01-29