An Empirical User Study for Measuring the Influence of Colour Distance and Font Size in Map Reading Using Eye Tracking

2016 ◽  
Vol 53 (3) ◽  
pp. 202-212 ◽  
Author(s):  
Alzbeta Brychtova ◽  
Arzu Coltekin
Author(s):  
Victoria Rautenbach ◽  
Serena Coetzee ◽  
Melissa Hankel

This paper presents the results of an exploratory user study using 2D maps to observe and analyse the effect of street name changes on prospective route planning. The study is part of a larger research initiative to understand the effect of street name changes on wayfinding. The common perception is that street name changes affect our ability to navigate an environment, but this has not yet been tested with an empirical user study. A combination of a survey, the thinking aloud method and eye tracking was used with a group of 20 participants, mainly geoinformatics students. A within-subject participant assignment was used. Independent variables were the street network (regular and irregular) and orientation cues (street names and landmarks) portrayed on a 2D map. Dependent variables recorded were the performance (<i>were the participant able to plan a route between the origin and destination?</i>); the accuracy (<i>was the shortest path identified?</i>); the time taken to complete a task; and fixation points with eye tracking. Overall, the results of this exploratory study suggest that street name changes impact the prospective route planning performance and process that individuals use with 2D maps. The results contribute to understanding how route planning changes when street names are changed on 2D maps. It also contributes to the design of future user studies. To generalise the findings, the study needs to be repeated with a larger group of participants.


Author(s):  
Victoria Rautenbach ◽  
Serena Coetzee ◽  
Melissa Hankel

This paper presents the results of an exploratory user study using 2D maps to observe and analyse the effect of street name changes on prospective route planning. The study is part of a larger research initiative to understand the effect of street name changes on wayfinding. The common perception is that street name changes affect our ability to navigate an environment, but this has not yet been tested with an empirical user study. A combination of a survey, the thinking aloud method and eye tracking was used with a group of 20 participants, mainly geoinformatics students. A within-subject participant assignment was used. Independent variables were the street network (regular and irregular) and orientation cues (street names and landmarks) portrayed on a 2D map. Dependent variables recorded were the performance (&lt;i&gt;were the participant able to plan a route between the origin and destination?&lt;/i&gt;); the accuracy (&lt;i&gt;was the shortest path identified?&lt;/i&gt;); the time taken to complete a task; and fixation points with eye tracking. Overall, the results of this exploratory study suggest that street name changes impact the prospective route planning performance and process that individuals use with 2D maps. The results contribute to understanding how route planning changes when street names are changed on 2D maps. It also contributes to the design of future user studies. To generalise the findings, the study needs to be repeated with a larger group of participants.


2009 ◽  
Vol 8 (1) ◽  
pp. 75-88 ◽  
Author(s):  
Niklas Elmqvist ◽  
Ulf Assarsson ◽  
Philippas Tsigas

Recent developments in occlusion management for 3D environments often involve the use of dynamic transparency, or "virtual X-ray vision", to promote target discovery and access in complex 3D worlds. However, there are many different approaches to achieving this effect and their actual utility for the user has yet to be evaluated. Furthermore, the introduction of semitransparent surfaces adds additional visual complexity that may actually have a negative impact on task performance. In this paper, we report on an empirical user study investigating these human aspects of dynamic transparency. Our implementation of the technique is an image-space algorithm built using modern programmable shaders to achieve real-time performance and visually pleasing results. Results from the user study indicate that dynamic transparency provides superior performance for perceptual tasks in terms of both efficiency and correctness. Subjective ratings are also firmly in favor of the method.


2013 ◽  
Vol 35 (2) ◽  
pp. 389-415 ◽  
Author(s):  
Patti Spinner ◽  
Susan M. Gass ◽  
Jennifer Behney

Eye-trackers are becoming increasingly widespread as a tool to investigate second language (L2) acquisition. Unfortunately, clear standards for methodology—including font size, font type, and placement of interest areas—are not yet available. Although many researchers stress the need for ecological validity—that is, the simulation of natural reading conditions—it may not be prudent to use such a design to investigate new directions in eye-tracking research, and particularly in research involving small lexical items such as articles. In this study, we examine whether two different screen layouts can lead to different results in an eye-tracking study on the L2 acquisition of Italian gender. The results of an experiment with an ecologically valid design are strikingly different than the results of an experiment with a design tailored to track eye movements to articles. We conclude that differences in screen layout can have significant effects on results and that it is crucial that researchers report screen layout information.


Dyslexia is one of the most common and hidden learning disabilities found in people, especially in the young age.It particularly affects reading, where the impaired reader takes a longer time to read and grasp the concept than the non-impaired reader.This further leads to academic failures.So studies to detect such issues have been conducted considering various factors like the reading times, fixation times, number of saccades(sudden movements in the eye), of both the impaired and non-impaired subjects,and give the best possible results.Thus,we plan to use the same eye tracking technique supported with machine learning models to detect and classify the individuals with and without dyslexia.The factors considered during the study are font-size, typeface, frequency of words(fixation times of non-impaired readers are more if frequency of encountered words is less) and age(people with learning disorders tend to enhance their reading skills with age), etc.


Author(s):  
A. Vondráková ◽  
V. Vozenilek

In the process of map making, the attention is given to the resulting image map (to be accurate, readable, and suit the primary purpose) and its user aspects. Current cartography understands the user issues as all matters relating to user perception, map use and also user preferences. Most commercial cartographic production is strongly connected to economic circumstances. Companies are discovering user’s interests and market demands. However, is it sufficient to focus just on the user’s preferences? Recent research on user aspects at Palacký University Olomouc addresses a much wider scope of user aspects. The user’s preferences are very often distorting – the users think that the particular image map is kind, beautiful, and useful and they wants to buy it (or use it – it depends on the form of the map production). But when the same user gets the task to use practically this particular map (such as finding the shortest way), so the user concludes that initially preferred map is useless, and uses a map, that was worse evaluated according to his preferences. It is, therefore, necessary to evaluate not only the correctness of image maps and their aesthetics but also to assess the user perception and other user issues. For the accomplishment of such testing, eye-tracking technology is a useful tool. The research analysed how users read image maps, or if they prefer image maps over traditional maps. The eye tracking experiment on the comparison of the conventional and image map reading was conducted. The map readers were asked to solve few simple tasks with either conventional or image map. The readers’ choice of the map to solve the task was one of investigated aspect of user preferences. Results demonstrate that the user preferences and user needs are often quite different issues. The research outcomes show that it is crucial to implement map user testing into the cartographic production process.


Author(s):  
J. Mirijovsky ◽  
S. Popelka

The main aim of presented paper is to find the most realistic and preferred color settings for four different types of surfaces on the aerial images. This will be achieved through user study with the use of eye-movement recording. Aerial images taken by the unmanned aerial system were used as stimuli. From each image, squared crop area containing one of the studied types of surfaces (asphalt, concrete, water, soil, and grass) was selected. For each type of surface, the real value of reflectance was found with the use of precise spectroradiometer ASD HandHeld 2 which measures the reflectance. The device was used at the same time as aerial images were captured, so lighting conditions and state of vegetation were equal. The spectral resolution of the ASD device is better than 3.0 nm. For defining the RGB values of selected type of surface, the spectral reflectance values recorded by the device were merged into wider groups. Finally, we get three groups corresponding to RGB color system. Captured images were edited with the graphic editor Photoshop CS6. Contrast, clarity, and brightness were edited for all surface types on images. Finally, we get a set of 12 images of the same area with different color settings. These images were put into the grid and used as stimuli for the eye-tracking experiment. Eye-tracking is one of the methods of usability studies and it is considered as relatively objective. Eye-tracker SMI RED 250 with the sampling frequency 250 Hz was used in the study. As respondents, a group of 24 students of Geoinformatics and Geography was used. Their task was to select which image in the grid has the best color settings. The next task was to select which color settings they prefer. Respondents’ answers were evaluated and the most realistic and most preferable color settings were found. The advantage of the eye-tracking evaluation was that also the process of the selection of the answers was analyzed. Areas of Interest were marked around each image in the grid and the sequences of gaze movements were analyzed. Sequence chart was used for visualization and eye-tracking metrics were statistically tested. The presented paper shows the differences in the perception and preferences of aerial images with different color settings.


2011 ◽  
Vol 40 (594) ◽  
Author(s):  
Susanne Bødker

<span style="font-family: Arial; font-size: x-small;"><span style="font-family: Arial; font-size: x-small;"><p>Dual eye-tracking (DUET) is a promising methodology to study and support</p> <p>collaborative work. The method consists of simultaneously recording the gaze of two</p> <p>collaborators working on a common task. The main themes addressed in the workshop</p> <p>are eye-tracking methodology (how to translate gaze measures into descriptions of joint</p> <p>action, how to measure and model gaze alignment between collaborators, how to address</p> <p>task specificity inherent to eye-tracking data) and more generally future applications of</p> <p>dual eye-tracking in CSCW. The DUET workshop will bring together scholars who</p> <p>currently develop the approach as well as a larger audience interested in applications of</p> <p>eye-tracking in collaborative situations. The workshop format will combine paper</p> <p>presentations and discussions. The papers are available online as PDF documents at</p> <p>http://www.dualeyetracking.org/DUET2011/.</p></span></span>


Geografie ◽  
2019 ◽  
Vol 124 (2) ◽  
pp. 163-185 ◽  
Author(s):  
Jan Brus ◽  
Michal Kučera ◽  
Stanislav Popelka

Be understanding of uncertainty, or the difference between a real geographic phenomenon and the user’s understanding of that phenomenon, is essential for those who work with spatial data. From this perspective, map symbols can be used as a tool for providing information about the level of uncertainty. Nevertheless, communicating uncertainty to the user in this way can be a challenging task. Be main aim of the paper is to propose intuitive symbols to represent uncertainty. Bis goal is achieved by user testing of specially compiled point symbol sets. Emphasis is given to the intuitiveness and easy interpretation of proposed symbols. Symbols are part of a user-centered eye-tracking experiment designed to evaluate the suitability of the proposed solutions. Eye-tracking data is analyzed to determine the subject’s performance in reading the map symbols. Be analyses include the evaluation of observed parameters, user preferences, and cognitive metrics. Based on these, the most appropriate methods for designing point symbols are recommended and discussed.


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