8/14/2019 118 - An evaluation of the grid geometry for human action recognition.pdf

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a,c

a,c

b,c

a,c

a

b

c

8/14/2019 118 - An evaluation of the grid geometry for human action recognition.pdf

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BBt

(WH)

Ft

BBt

BBt1

BBt N

BBt

Ft BBt

N

N

n

n

[0 2]

z

w(z) =w(z;K,L)

K

L

KL

w1 w2

w1

L = 4

8/14/2019 118 - An evaluation of the grid geometry for human action recognition.pdf

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w1

w2

w1(z) = 1 w1(z)w2(z) = 1 w2(z)

(x, y)

BBt

m(vx, vy) = (vx, vy) (x, y)

R(x, y)

i

Ri(x, y), i 1, 2

HR(x,y)[n()] HR(x,y)[n())] +

+ m(vx, vy) w1(x) w2(y)

HR1(x,y)[n())] HR1(x,y)[n())] ++ m(vx, vy) w

1(x) w2(y)

HR2(x,y)[n())] HR2(x,y)[n())] ++ m(vx, vy) w1(x) w

2(y)

n(vx, vy)

x y

p (1, 1)

R(x, y)

wx wy

x (1, 0)

R1(x, y)

wx wy

y

(0, 1)

R2(x, y) wx w

y

BBt

N

8/14/2019 118 - An evaluation of the grid geometry for human action recognition.pdf

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H1

h , ...,

HN

h

h =N

i=1

nj=1

Hi[j]

N = m n

m

n

w1= wx = w(x;W,m)w2= wy = w(y;H, n) w

1= w

x = 1 wx w2= w

y = 1wy W H

BB

N = s r

s

r

R

w1 = w = w(;R, r)w2= w = w(; 2, s) w

1= w

= 1w w2 = w

= w

m = 4 n = 4 N = 16

r = 2 s = 8 N = 16

8/14/2019 118 - An evaluation of the grid geometry for human action recognition.pdf

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4 4 8 2 2 8 2 12

12 2

8 3

3 8

n

BBt WH 60 60

5 5

2 12

12 2

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4 4 8 2 2 8 12 2 2 12 3 8 8 3

122

212

2 12

12 2

2 12 12 2

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2 12

12 2

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