Related Experiment Video
Updated: Feb 10, 2026
09:29
A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
Published on: February 11, 2014
13.5K
[Assessment of skin aging grading based on computer vision]
Lingyu Li1, Jinxia Xue1, Xiangqian He2
1College of Medical Informatics, Chongqing Medical University, Chongqing 400016, P.R.China.
Summary
This study introduces an automated method for grading skin aging using a self-organizing map (SOM) network. The system accurately assesses skin aging by analyzing texture parameters from digital images, offering an objective alternative to manual grading.
Area of Science:
- Dermatology
- Biomedical Engineering
- Image Analysis
Context:
- Skin aging is a primary indicator of human aging.
- Accurate grading of skin aging is crucial for evaluating aging and anti-aging treatments.
- Conventional grading methods are subjective and lack objectivity.
Purpose:
- To develop an automated and objective method for skin aging grading.
- To overcome the subjectivity inherent in traditional skin aging assessment techniques.
- To utilize machine learning for quantitative skin aging analysis.
Summary:
- Ventral forearm skin images were captured using a digital microscope.
- Key texture parameters, including mean furrow width and intersection count, were extracted via image processing.
- A self-organizing map (SOM) network was trained using these parameters for automated grading.
Impact:
- The developed method achieved 80.8% accuracy compared to human graders.
- This approach offers a rapid and objective tool for quantitative skin image analysis.
- Enables automatic assessment of skin aging, aiding in research and clinical applications.
Related Concept Videos
01:24Vision
60.3K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
60.3K
01:24Color Vision
1.5K
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
1.5K
01:19Graded Potential
7.1K
Graded potentials are localized fluctuations in the cell membrane's electrical charge, commonly found in the dendrites of neurons. The magnitude of these potential changes depends on the strength of the initiating stimulus. In a membrane at its resting potential, a graded potential signifies a voltage shift either above -70 mV or below -70 mV.
Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or...
Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or...
7.1K
01:30Assessment of Airway, Skin Color, and Use of Accessory Muscles
1.7K
A thorough assessment of respiratory health is paramount in clinical settings to identify and manage respiratory distress and ensure adequate oxygenation. This article elaborates on the critical aspects of respiratory evaluation, including airway assessment, skin color examination, and the observation of accessory muscle use, which are integral to effectively diagnosing and managing patients with respiratory conditions.
Introduction
The initial evaluation of a patient's respiratory system...
Introduction
The initial evaluation of a patient's respiratory system...
1.7K
01:15Types of Aggregate Grading
1.5K
Aggregate grading is crucial in economically obtaining a concrete mix with adequate strength, reasonable workability, and minimal segregation. There are four types of aggregate gradation: well-graded, uniformly (or one-sized) graded, gap-graded, and open-graded.
Well-graded aggregates include a complete range of necessary size fractions that fit together to create a dense matrix with minimal voids, represented by a smooth, continuous gradation curve. This type of grading ensures good...
Well-graded aggregates include a complete range of necessary size fractions that fit together to create a dense matrix with minimal voids, represented by a smooth, continuous gradation curve. This type of grading ensures good...
1.5K
01:26Aging
781
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
781