Marta G. Carcedo, Soon Hau Chua, Simon Perrault, Pawel Wozniak,Raj Joshi, Mohammad Obaid, Morten Fjeld, Shengdong Zha
Most existing colorblind aids help their users to distinguish and recognize colors but not compare them. We present HaptiColor, an assistive wristband that encodes discrete color information into spatiotemporal vibrations to support colorblind users to recognize and compare colors. We ran
three experiments: the first found the optimal number and placement of motors around the wrist-worn prototype, and the second tested the optimal way to represent discrete points between the vibration motors. Results suggested that using three vibration motors and pulses of varying duration to encode proximity information in spatiotemporal patterns is the optimal solution. Finally, we evaluated the HaptiColor prototype and encodings with six colorblind participants. Our results show that the participants were able to easily understand the encodings and perform color comparison tasks accurately (94.4% to 100%).
Color blindness; wearable computing; vibration;
spatiotemporal vibrotactile pattern; wristband.
ACM Classification Keywords
H5.2 [Information interfaces and presentation]: User
Interfaces – Haptic I/O.