Retinal Temporal Response
Retinal Spatio-Temporal
Contrast Sensivity Function
(measured by D.H. Kelly, JOSA
1985)
5
10
15
20
cyclesêsec
0
50
100
150
200
CSF
5
10
15
20
a cyclesêdegree
5
10
15
20
cyclesêsec
50
100
150
200
CSF
For given
velocity
Freq. Response
Impulse Resp.
IFT
- 0.5
0
0.5
1
0
20
40
60
80
100
120
Frame A ge (milliseconds)
Comparison of G TV and SPMO Te mpora l Filt ers
G TV Temporal Filter
diff(ga mma _pdf(X,9,0. 18))
For a rigid moving object, its component spatial
frequencies induce corresponding temporal frequencies
proportional to its speed
Over ~0.12 sec.
glimpse period
Next Page
To PMO Page
