Fine Tactile Representation of Materials for Virtual Reality

Table 3

Vibration computing model based on pixel values.

(a)

Strength of vibration according to pixel brightness value
Brightness	Vibration’s strength
	PWM (Hz)	RPM
0~230	0	0
231~235	130	5,720
236~240	160	7,040
241~245	190	8,360
246~250	220	9,680
251~255	250	11,000

(b)

Spacing of vibration according to the distance of the pixel from the origin
Distance from the origin of the pixel (px)	The interval between vibrations (sec)
0~5	2.5
5~10	2
10~15	1.5
15~20	1
20~25	0.5