Name Size and contrast threshold for legibility
Aliases none

"In one of the sensory characteristics database of elderly persons and persons with disabilities, it is a database that can estimate the legible font size of a letter and a digit by setting design parameters of the display character (font, characters, and luminance contrast between a character and background) and their conditions of use (user’s age and viewing distance). In addition, this database can estimate the legible luminance contrast between a character and background by setting design parameters of the display characters (font, characters, and size) and their conditions of use. "

Type DB
Main Institutes of management "Human Technology Research Institute (HTRI), National Institute of Advanced Industrial Science and Technology (AIST)"
Country of the Institute Japan
URL of the site
Interface GUI
Input example

"Specify the age, visual distance, font, character type, readability, negative / positive, specified variable, screen size and screen resolution."

Minimum legible
Amount of the all data for download(Mbyte) | Method to obtain the all data. 0.0|none
External resources (databases) in building the product. None
Data type Visual data
Biological species in the main concern
Conditions of use Prohibition against reproduction and uninte nded purpose.
Frequency of updates (in last two years) unknown
Last date of updates (date of confirmation) 2016/05/09 (2019/05/07)
Main IDs used in the products none
How to make a link to get access to each IDs. none
external databases to which this database/tool have links


Published papers (PubMed IDs)


Operational Status