Related Experiment Video
Updated: Aug 13, 2025
09:29
A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
Published on: February 11, 2014
13.1K
Laser Sensing and Vision Sensing Smart Blind Cane: A Review
Chunming Mai1, Dongliang Xie1, Lina Zeng1,2
1College of Physics and Eletronic Engineering, Hainan Normal University, Haikou 571158, China.
Sensors (Basel, Switzerland)
|January 21, 2023
Summary
Smart canes with laser and vision sensing offer improved travel for the visually impaired. Current systems have defects, but advancements in laser-vision fusion show promise for future development.
Area of Science:
- Robotics and Assistive Technologies
- Computer Vision
- Sensor Fusion
Background:
- Visually impaired individuals face travel challenges.
- Existing smart cane technologies have functional limitations.
- Laser and vision sensing offer potential for enhanced navigation.
Purpose of the Study:
- To review the current state of laser and vision sensing smart canes.
- To analyze the advantages and disadvantages of different sensing approaches.
- To explore the future development of integrated laser-vision sensing systems.
Main Methods:
- Classification and introduction of guide equipment and smart blind canes.
- Investigation of vision sensing, laser sensing, and combined laser-vision sensing smart canes.
- Summarization of research status and development of laser-vision fusion.
Main Results:
- Identified defects in current smart cane systems.
- Detailed analysis of various laser-vision sensing smart cane configurations.
- Highlighted laser-vision fusion as a key area for advancement.
Conclusions:
- Laser-vision fusion is crucial for next-generation smart canes.
- Further development is needed to overcome current system limitations.
- Enhanced smart canes promise safer and more efficient travel for the visually impaired.
Related Concept Videos
01:24Vision
54.7K
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.
54.7K
02:07Blind Procedures
10.8K
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
10.8K
01:26Visual System
642
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
Once through the pupil, the light passes through the lens, a...
642