Color influence on Visual Acuity

Color influence on Visual Acuity LU Ming YAN Rui YU Jia CHEN Ying QIU Qiangqiang

ColorInfluence LU Ming YAN Rui YU Jia CHEN Ying QIU Qiangqiang

Agenda Introduction Parameter setting Experiment Design Data analysis and conclusion ° Further improvement

• Introduction • Parameter setting • Experiment Design • Data analysis and conclusion • Further improvement

PART ONE Introduction Background ° Our purpose

• Background • Our purpose Introduction

PART ONE Background Electronic traffic signs, especially based on LED, seem to an overwhelming trend o Dynamic Updated Connectable Solar energy supported 8

Electronic traffic signs, especially based on LED, seem to an overwhelming trend. • Dynamic • Updated • Connectable • Solar energy supported Background

PART ONE Purpose Our experiment is to study the color factors (combination, brightness) influencing visual acuity on electronic panel under high-speed condition

Purpose Our experiment is to study the color factors (combination, brightness) influencing visual acuity on electronic panel under high-speed condition

PART ONE Physical Meaning of Parameters The meaning of our experiment To identify the factors that have significant influence on the short-time led discernation The main application of led for short time discernation is transportation area Model To simulate the real driving condition is the base stone to assure the validation of our experiment

• The meaning of our experiment To identify the factors that have significant influence on the short-time LED discernation. • The main application of LED for short time discernation is transportation area. • Model To simulate the real driving condition is the base stone to assure the validation of our experiment. Physical Meaning of Parameters

PART TWO Preparation Parameter setting Color system

• Parameter setting • Color system Preparation

PART TWO Simulation Condition The relationship between vehicle velocity and reaction time Noise simulation To simulate the disturbance and noise in driving play touring video at the background Equipment configuration--- consistency The angle of computer LCD The screen brightness The angle of f the chair for the participants

• The relationship between vehicle velocity and reaction time. • Noise simulation To simulate the disturbance and noise in driving, play touring video at the background • Equipment configuration--- consistency • The angle of computer LCD • The screen brightness • The angle of the chair for the participants Simulation Condition

PART TWO Velocity Simulation The relationship between vehicle velocity and reaction time Reaction time=Discerning time Action time Discerning time the time for the driver to discern the Comparative, traffic signs easy to simulate Display time the uime to display the picture Action time the time for driver to take actions Not comparative responding to the signs clicking the mouse& Answer time the time to a steering wheel question

• The relationship between vehicle velocity and reaction time. • Reaction time=Discerning time + Action time • The time for the driver to discern the traffic signs. • Display time, The time to display the picture. Discerning time • the time for driver to take actions responding to the signs • Answer time ,the time to answer the question Action time Comparative, easy to simulate Not comparative, clicking the mouse& steering wheel Velocity Simulation

PART TWO Velocity Simulation velocity(km/h) 40 60 80 100 Average Reaction 435 411 374 326 Distance(m) Average Reaction 3.0 1.9 1.3 0.9 Time(s) High road Table 1 Reaction distance to traffic sign under different velocities Velocity Display time Answer time (km/hr) s (s) value assigned 100 0.1 08 20~29岁 23|2:5zm9x,x.6m (10)s26725.0217.42.!2.33.z Discernation 30~39岁 226254.247.8260.020.4520.9233262457 time 5人)s|301.13!23546061.5t:1042 Scale =100 ms 40~49岁 242245948.128.8232455.238.567,758 .667.88.689.665.2183 56.576.5 总体 2329254.548.426.5236.53.331426157 3)st6|2900:|250.56t965

Velocity(km/h) 40 60 80 100 Average Reaction Distance(m) 435 411 374 326 Average Reaction Time(s) 3.0 1.9 1.3 0.9 Table 1 Reaction distance to traffic sign under different velocities Reaction time= Discerning time + Action time High road Discernation time Scale =100 ms Velocity (km/hr) Display time (s) Answer time (s) Value assigned 100 0.1 0.8 Velocity Simulation