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MMAT5390202021 - Shared screen with speaker view
Chin Ting Timothy TSANG
31:58
yes
Ray JIN
32:00
yes
Ka Lung CHAN
32:32
yes
Ho Renee TIN
35:44
yes
Ray JIN
35:50
yes
Ka Lung CHAN
35:50
yes
Ho Renee TIN
42:30
yes
Ka Lung CHAN
42:33
yes
Kwong Ming KWOK
42:34
Yes
Ray JIN
42:34
yes
James Tung
42:37
What is divergent?
James Tung
43:49
ok thanks
James Tung
44:46
What does sigma stands for in image I?
James Tung
45:22
like a video?
James Tung
45:43
ok
Ray JIN
47:38
yes
Ho Renee TIN
47:39
yes
Ka Lung CHAN
47:40
yes
James Tung
47:42
yes
Ray JIN
49:56
yes
Ka Lung CHAN
49:57
YES
James Tung
50:00
yes
Daixi HONG
50:01
ok
Jiaji LIN
50:03
yes
Ka Lung CHAN
53:42
yes
Ho Renee TIN
53:44
ok
Ray JIN
53:45
yes
Ray JIN
55:46
yes
Ka Lung CHAN
55:47
YES
Ka Lung CHAN
56:53
YES
Daixi HONG
56:56
yes
Zhe CHEN
56:57
yes
Ray JIN
58:09
yes
Ka Lung CHAN
58:14
yes
Zhe CHEN
58:17
yes
Ka Lung CHAN
01:03:53
yes
Chan Chan River
01:04:07
Shouldn’t there be a constant if we use integration by parts?
Chan Chan River
01:04:54
Oh thanks
Ho Renee TIN
01:05:02
yes
James Tung
01:05:05
yes
Ka Lung CHAN
01:08:13
YES
Ray JIN
01:08:14
yes
Daixi HONG
01:08:14
yes
Ho Renee TIN
01:08:16
yes
TSANG
01:12:04
by finding slope?
Ka Lung CHAN
01:13:00
YES
Daixi HONG
01:16:22
yes
Ray JIN
01:16:22
yes
Ka Lung CHAN
01:16:26
YES
Ho Renee TIN
01:16:27
yes
Ka Lung CHAN
01:20:29
YES
Ray JIN
01:20:29
yes
Ho Renee TIN
01:20:49
So it may not works well if the image is very noisy since the gradient fluctuates near noise too?
Ho Renee TIN
01:23:55
Thank you~
James Tung
01:24:18
I don't understand how solving the differential equation can help us denoise, are we solving for sigma?
James Tung
01:27:05
I see
James Tung
01:27:18
Solving for I at different sigma?
Ray JIN
01:28:14
Is it similar to solve the inverse problem?
Ray JIN
01:28:24
yes
James Tung
01:28:34
And then we use I*g as an approximation for solving the differential equation?
James Tung
01:30:02
ok I see
James Tung
01:34:57
How is divergent approximated by matrix multiplication?
James Tung
01:36:35
Ok I see
Ho Renee TIN
01:36:56
yes
Ka Lung CHAN
01:36:57
yes
Ray JIN
01:37:03
yes
Timothy
01:37:06
yes
Ho Renee TIN
01:37:09
yes
Ka Lung CHAN
01:38:47
yes
Ray JIN
01:38:47
yes
Zhe CHEN
01:38:51
yes
Ray JIN
01:42:47
yes
Ho Renee TIN
01:42:48
yes
Ray JIN
01:44:50
-f
Ray JIN
01:45:28
yes
Ka Lung CHAN
01:45:32
yes
James Tung
01:45:35
yes
Tong WU
01:45:40
yes
Wing Suet CHU
01:45:41
yes
Ray JIN
01:45:49
edge
Ho Renee TIN
01:46:23
yes
Ray JIN
01:46:23
yes
James Tung
01:46:25
yes
Daixi HONG
01:49:12
yes
Ray JIN
01:49:13
yes
Ka Lung CHAN
01:49:13
yes
Ho Renee TIN
01:49:15
ok
Wing Suet CHU
01:49:16
yes
Ho Renee TIN
01:54:24
yes
Ray JIN
01:54:25
yes
Daixi HONG
01:54:26
yes
Wing Suet CHU
01:54:26
yes
Ka Lung CHAN
01:54:27
YES
James Tung
01:54:58
just a plain sqaure
Ray JIN
01:54:59
image
Daixi HONG
01:56:30
ok
Ka Lung CHAN
01:56:31
yes
Zhe CHEN
01:56:33
ok
Wing Suet CHU
01:56:34
yes
James Tung
01:56:35
yes
Jiaji LIN
01:56:44
ok
James Tung
01:56:52
do we need to put a cof to control the balance?
James Tung
01:57:34
ok
Daixi HONG
01:59:09
yes
James Tung
01:59:11
yes
Ray JIN
01:59:13
yes
Wing Suet CHU
01:59:13
yes
Ka Lung CHAN
01:59:13
yes
Timothy
02:00:59
no
Ho Renee TIN
02:03:37
yes
Ka Lung CHAN
02:03:40
YES
Ray JIN
02:03:40
yes
James Tung
02:03:40
yes
Ka Lung CHAN
02:22:22
yes
Zhe CHEN
02:22:26
yes
Ho Renee TIN
02:22:27
yes
Ka Lung CHAN
02:22:55
yes
Zhe CHEN
02:23:04
yes
Ho Renee TIN
02:25:18
yes
Ka Lung CHAN
02:25:19
yes
James Tung
02:25:20
yes
Ho Renee TIN
02:30:11
yes
Timothy
02:30:20
yes
James Tung
02:30:28
Can you explain the last two terms again?
James Tung
02:32:59
Why is that not written in the red equation?
James Tung
02:33:31
ok
James Tung
02:35:17
yes
Ho Renee TIN
02:36:10
yes
Ka Lung CHAN
02:36:11
yes
Chan Chan River
02:36:12
yes
Timothy
02:36:14
ok
Ray JIN
02:41:35
yes
Chan Chan River
02:41:41
yes
Ka Lung CHAN
02:41:43
yes
Ho Renee TIN
02:41:45
yes
Wing Suet CHU
02:41:46
yes
Ray JIN
02:47:51
yes
Ka Lung CHAN
02:47:53
yes
Chan Chan River
02:47:54
yes
Ho Renee TIN
02:47:54
yes
Ray JIN
02:51:26
yes
Chan Chan River
02:51:29
yes
Ka Lung CHAN
02:51:31
yes
Ho Renee TIN
02:52:13
yes
James Tung
02:52:19
yes
Chan Chan River
02:52:19
yes
Ka Lung CHAN
02:52:20
yes
Daixi HONG
02:52:22
yes
Wing Suet CHU
02:52:24
yes
Zhe CHEN
02:52:25
yes
Ho Renee TIN
02:55:31
yes
Ka Lung CHAN
02:55:33
yes
James Tung
02:55:34
yes
Timothy
02:55:35
yes
Wing Suet CHU
02:55:36
yes
Chan Chan River
02:55:38
yes
Ho Renee TIN
02:56:55
yes
Ka Lung CHAN
02:57:00
yes
Ka Lung CHAN
02:59:25
yes
Ray JIN
02:59:28
yes
Wing Suet CHU
02:59:29
yes
James Tung
03:04:24
Can you explain the interior and boundary? I haven't learnt integration by part before
James Tung
03:04:40
What does the boundary mean?
James Tung
03:05:17
Ok
James Tung
03:05:32
yes
Ray JIN
03:12:28
yes
James Tung
03:12:29
yes
Wing Suet CHU
03:12:32
yes
Ka Lung CHAN
03:13:04
yes
Ho Renee TIN
03:13:08
one thing that I don't understand is a + b = 0 doesn't implies a = 0 and b = 0? then how do we know that on the RHS, the left part = 0 and the right part = 0?
Ray JIN
03:13:08
Yes
Timothy
03:13:28
since both of them are not negative?
Ho Renee TIN
03:14:49
ok
Ho Renee TIN
03:15:30
Thank you
James Tung
03:15:33
What is the vector n?
James Tung
03:16:19
pointing outwards or orthogonal?
James Tung
03:16:34
Ok thanks
Ray JIN
03:16:58
does f is unique?
Ray JIN
03:19:55
ok
Timothy
03:20:08
thank you
Ka Lung CHAN
03:20:11
Thank you
Wing Suet CHU
03:20:12
thank you~
James Tung
03:20:13
Thanks
Daixi HONG
03:20:19
thank u and good night
Ronald LUI
03:20:22
Thank you for attending the lecture tonight.
Chan Chan River
03:20:27
Thanks good night
Ray JIN
03:20:27
thanks
Zhe CHEN
03:20:53
tahnks