Using a visual acuity criterion for legibility, outline fonts are about 82% less legible than their solid counterparts. Crowding effects are similar for the two types of fonts. Both sets of results can be adequately explained by contrast sensitivity of visual channels serving 1-4 c/character.

0141-9382/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.displa.2010.09.002 ⇑ Corresponding author. Tel.: +886 3 5715131x429 E-mail address: [email protected] (Y.-T. Lin). The intent of this study is to determine the minimum ambient illumination requirement for legible electronic-paper display. Not only the young but also the elderly were included as research subjects. Through the method...

A CAPTCHA which humans find to be highly legible and which is designed to resist automatic character–segmentation attacks is described. As first detailed in [BR05], these ‘ScatterType’ challenges are images of machine-print text whose characters have been pseudorandomly cut into pieces which have then been forced to drift apart. This scattering is designed to repel automatic segmentthen-recogni...

Solutions must be submitted at beginning of class on Wednesday, March 3, 2004. This is an open-book exam. Handwritten answers are fine as long as they are legible and organized. Please show all work. I've tried to leave space on this handout for your solutions. The midterm is worth 15% of your total grade.

font-independent character descriptions are important for a systematic approach to automated and semi-automated font design. This is particularly so for large character sets such as Kanji. The paper defines a completely coordinate-independent notation for Kanji, which contains all the necessary information to produce legible character sketches.

An increasingly common approach being taken by taxonomists to define the relationships between taxa in alternative hierarchical classifications is to use a set-based notation which states relationship between two taxa from alternative classifications. Textual recording of these relationships is cumbersome and difficult for taxonomists to manage. While text based GUI tools are beginning to appea...