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MMAT5390202021 - Shared screen with speaker view
Zhe CHEN
29:55
yes
Chin Ting Timothy TSANG
29:55
yes
Ho Renee TIN
29:55
yes
Ka Lung CHAN
29:56
YES
Ray JIN
29:56
yes
Ho Renee TIN
30:15
yes
Ho Renee TIN
31:10
oh no....
Gai HUANG
31:35
how about a vote
Ho Renee TIN
31:48
I have 24 hr exam on 28 and 30th of April.....
Chin Ting Timothy TSANG
32:18
any friday?
Chin Ting Timothy TSANG
32:24
coz we need to work
James Tung
32:26
1st or 2nd of May?
Ronald LUI
32:44
May 1 or May 2?
James Tung
33:00
I prefer 1st May from 6pm
Gai HUANG
33:03
may 3
Ho Renee TIN
33:05
I am fine
Chin Ting Timothy TSANG
33:12
7/5 1/5,3/5 are okay
1155083639@link.cuhk.edu.hk
33:12
May 3
Ho Renee TIN
33:21
with 1/2/3 May
Chin Ting Timothy TSANG
33:24
please not on week day
Ka Lung CHAN
33:24
prefer weekend
Ka Lam LEE
33:25
prefer 1st May from 6pm
James Tung
33:27
A vote between 1/2/3 May?
Gai HUANG
33:30
mmat5010 is in May1
Chin Ting Timothy TSANG
33:31
2/5 not 3/5
James Tung
33:59
Can use raise hand?
Ronald LUI
34:22
May 2...
Shiyin WU
34:53
from 6 pm?
Chin Ting Timothy TSANG
34:55
can we vote for 7/5?
Ronald LUI
35:07
May 3
1155083639@link.cuhk.edu.hk
35:13
May 7
Ronald LUI
35:31
May 7
1155083639@link.cuhk.edu.hk
35:47
+1
Kwong Ming KWOK
35:56
How to raise the hand here..
Yuchen WANG
36:06
May 7
JIAJI LIN
36:23
7
Kwong Ming KWOK
36:25
May 3
Ho Renee TIN
36:27
click participant and cllick raise hand
Chen CHEN
36:33
Click the meme
Ka Lam LEE
36:33
I voted for 2nd May
Ying WAN
36:41
5.1
Chin Ting Timothy TSANG
36:55
google form?
Chin Ting Timothy TSANG
37:45
for part time students we cannot have a 24 hours on weekdays
Gai HUANG
38:12
mmat5220 is in May 4
Gai HUANG
38:56
24 hours
Ronald LUI
39:02
May 2, May 3, May 8, May , May 9
Ka Lung CHAN
39:12
i think there is a system in zoom for questions
Qianyi
39:23
3 is a weekday
Ka Lam LEE
39:23
How many votes can we choose?
Ronald LUI
40:26
May 2, May 8, May 9
Ronald LUI
40:31
May 2
Ho Renee TIN
40:31
vote can only be done with zoom client (app ver.) I think
Ka Lung CHAN
40:48
can we vote for more than 1 day?
Ronald LUI
41:37
May 8
Chin Ting Timothy TSANG
41:41
3/5 DSE MATH exam... math teacher are extremely busy on that day
Chin Ting Timothy TSANG
41:46
on 2/5
Daixi HONG
43:55
Ok
Chin Ting Timothy TSANG
44:00
8/5?
Chin Ting Timothy TSANG
44:34
3/5 dse exam 2/5 will be a busy day for math teacher
Gai HUANG
44:55
ok
Chin Ting Timothy TSANG
44:55
thank you very much for your consideration
Zhe CHEN
44:55
ok
Chen CHEN
44:58
ok
Kwong Ming KWOK
46:07
Yes.. can you change it to 6pm..
Ka Lung CHAN
46:11
Is it possible for posting over 24hr?
Yijun CHEN
46:24
7/5?
1155083639@link.cuhk.edu.hk
46:33
6pm is fine
Ka Lam LEE
46:37
May 9 is Mother’s Day
Ka Lam LEE
46:45
XD
Gai HUANG
47:00
ok
Kwong Ming KWOK
47:03
Thanks!
Tingli LIN
47:08
ok
Yuanyuan FANG
47:09
ok
Zhe CHEN
47:10
ok
Ka Lung CHAN
47:10
OK for me
Ying WAN
47:17
I think morning is good
Ying WAN
47:59
ok
Ho Renee TIN
48:15
yes
Ka Lam LEE
48:16
ok
Daixi HONG
48:20
ok
huangxin
48:24
ok
Ray JIN
48:30
ok
Ho Renee TIN
48:36
Thank you very much
Ka Lung CHAN
49:47
YES
Chin Ting Timothy TSANG
49:51
yes
Zhe CHEN
49:52
yes
James Tung
51:11
enhance edges
Ho Renee TIN
51:12
deblur
James Tung
55:27
should be inverted triangle^2?
James Tung
55:37
the notation
James Tung
55:56
ok
Daixi HONG
58:01
yes
JIAJI LIN
58:02
yes
James Tung
58:03
yes
Ray JIN
58:03
yes
Chin Ting Timothy TSANG
58:49
edge
James Tung
01:01:14
why use negative?
James Tung
01:01:55
okok
Chin Ting Timothy TSANG
01:06:22
ok
Ho Renee TIN
01:06:23
yes
James Tung
01:06:26
yes
Gai HUANG
01:06:27
ok
James Tung
01:08:44
low pass filter?
Ka Lung CHAN
01:08:50
smoothing?
James Tung
01:08:59
blur
Ka Lung CHAN
01:09:00
averaging
Qianyi
01:09:04
average
Yijun CHEN
01:09:04
average
Zhe CHEN
01:16:19
yes
Kin Man TANG
01:16:23
yes
Ka Lung CHAN
01:16:23
YES
Ka Lam LEE
01:16:25
yes
Kwong Ming KWOK
01:16:27
Yes
Zhe CHEN
01:16:42
yes
Ho Renee TIN
01:17:35
What is the method 2 different from original image + a high pass filtered image?
Ho Renee TIN
01:19:01
that why do we want to use 1 - low pass filtered image?
Ho Renee TIN
01:19:50
unsharp masking
Ho Renee TIN
01:20:19
instead of simply a high pass filter
Ho Renee TIN
01:20:47
oh
Ho Renee TIN
01:20:56
Thank you
JIAJI LIN
01:21:23
ronald can you explain method1 why laplacian capture edge
JIAJI LIN
01:23:31
ok thank you very much!
Kin Man TANG
01:24:00
yes
Ka Lung CHAN
01:24:42
YES for me
Kwong Ming KWOK
01:24:48
Yes
Chen CHEN
01:24:51
yes
Qianyi
01:24:51
yes
Sisi XIAO
01:24:53
yes
Ka Lung CHAN
01:25:00
good
Gai HUANG
01:25:01
ok
Ho Renee TIN
01:25:03
stable
Qianyi
01:28:45
yes
Ka Lung CHAN
01:28:47
yes
Ho Renee TIN
01:28:48
yes
Yuchen WANG
01:29:04
yes
Qianyi
01:30:54
yes
Ka Lung CHAN
01:30:56
yes
Ho Renee TIN
01:33:44
yes
Chen CHEN
01:35:14
yes
Ka Lung CHAN
01:35:16
yes
Gai HUANG
01:35:18
yes
JIAJI LIN
01:35:22
yes
Ka Lung CHAN
01:39:08
yes, for non linear filter, are there similar property?
Ho Renee TIN
01:39:08
yes
Ka Lung CHAN
01:40:44
ok. thank you.
Youyang YI
01:41:02
yes
Chin Ting Timothy TSANG
01:43:23
is the image will become brighter in example 1?
Chin Ting Timothy TSANG
01:43:43
the value is larger
Chin Ting Timothy TSANG
01:44:51
but if 1 mean whitewhat if the value is larger than 1?
Chin Ting Timothy TSANG
01:46:33
thank yousince example 1 seems the value will over 1 easily
Chin Ting Timothy TSANG
01:48:31
blur
Chin Ting Timothy TSANG
01:48:32
?
Ho Renee TIN
01:52:30
yes
Ka Lung CHAN
01:52:32
YES
Yuanyuan FANG
01:52:34
yes
Ho Renee TIN
01:55:57
yes
Qianyi
01:56:33
yes
Daixi HONG
01:56:34
yes
Ka Lung CHAN
01:56:35
YES
Yuchen WANG
01:56:35
yes
Sisi XIAO
01:56:36
yes
Tong WU
01:56:38
yes
Chen CHEN
01:56:43
yes
Ka Lung CHAN
02:06:00
yes
Ho Renee TIN
02:06:03
Yes.Can we do binary operation other than pointwise multiplication in the frequency domain? can't it create some effect like non-linear filtering?
Ho Renee TIN
02:07:25
oh
Ho Renee TIN
02:08:22
Thank you
Ka Lung CHAN
02:09:33
YES
Zhe CHEN
02:09:35
yes
Yuchen WANG
02:09:37
yes
Chen CHEN
02:09:38
yes
Sisi XIAO
02:09:40
yes
Ka Lung CHAN
02:25:01
YES
Ho Renee TIN
02:25:06
yes
Ka Lung CHAN
02:25:26
no yet
Ka Lung CHAN
02:25:41
yes now
Ho Renee TIN
02:25:46
yes
Chin Ting Timothy TSANG
02:30:52
can we make the image become sharp again?
Chin Ting Timothy TSANG
02:31:05
gaussian
Ka Lung CHAN
02:31:05
same for me
Ho Renee TIN
02:31:08
similar
Ka Lung CHAN
02:31:17
a bit
James Tung
02:31:57
how do these method compares with the low pass filtering?
James Tung
02:32:19
Like the butterworth LPF
James Tung
02:32:56
ok
Chin Ting Timothy TSANG
02:33:15
yes thank you
Chin Ting Timothy TSANG
02:36:03
this filter is not reversable the noise are removedthen we can do sharpening?
Ka Lung CHAN
02:36:58
what is disadvantage of median filter? only computation time is long?
Ka Lung CHAN
02:37:27
yes
Chin Ting Timothy TSANG
02:37:33
the cookie image is bad...
Ka Lung CHAN
02:38:33
yes
Chin Ting Timothy TSANG
02:40:15
what if do this fitering twice?
Chin Ting Timothy TSANG
02:42:08
yes
Daixi HONG
02:42:11
ok
James Tung
02:42:11
yes
Ka Lung CHAN
02:42:12
yes
Daixi HONG
02:44:58
ok
Zhe CHEN
02:45:49
Yes
Ho Renee TIN
02:49:01
yes
Ka Lung CHAN
02:49:02
YES
Qianyi
02:49:02
yes
Daixi HONG
02:49:04
ok
Qianyi
02:54:54
yes
Ho Renee TIN
02:54:54
yes
Ka Lung CHAN
02:54:55
yes
Kwong Ming KWOK
02:55:00
Yes
Chin Ting Timothy TSANG
02:55:23
no idea....
Sisi XIAO
02:55:24
yes
James Tung
02:55:31
When there is a large patch of similar patterns
Ho Renee TIN
02:55:31
repeated pattern?
Ho Renee TIN
02:57:59
yes
Chin Ting Timothy TSANG
02:58:00
yes
James Tung
02:58:00
yes
Ka Lam LEE
02:59:25
Instead of compare the photo itself, if we compare the image form the internet, we may have more chance to find similar images, right?
Ka Lung CHAN
03:00:51
no, not sharing
Ka Lung CHAN
03:00:53
yes now
Ka Lung CHAN
03:00:59
no now
Ka Lung CHAN
03:01:10
yes now
Ho Renee TIN
03:01:14
yes now
Zhe CHEN
03:01:16
yes
Ho Renee TIN
03:05:53
I was thinking of mode filter for denoising, can we? since it will not create frequency that does not exist in a local area but I don't know what to do if there are more than 1 mode
Ho Renee TIN
03:06:48
Thank you
Chin Ting Timothy TSANG
03:07:01
thank you
Ho Renee TIN
03:07:04
Constrained least square filtering need to assume constant magnitude of noise (*), you have state that assuming the signal to noise ratio is constant throughout the image is not realistic,then is the * assumption realistic? ( Though I think it is good enough for the eye-ball norm)
Ronald LUI
03:07:11
Thank you very much for attending the lecture today.
Ho Renee TIN
03:07:21
actually a question from last lecture
Ho Renee TIN
03:08:03
yes
Ho Renee TIN
03:09:15
Then this assumption is good enough then
Ho Renee TIN
03:09:44
Thank you
Ho Renee TIN
03:09:56
oh
Ho Renee TIN
03:10:31
I still got another question....sorry
Ho Renee TIN
03:11:08
In the AI lecture , the prof. said that Mexican Hat network is good for the purpose of contrast enhancement. Why?
Ho Renee TIN
03:11:43
oh
Ho Renee TIN
03:12:35
Thank you
Ka Lung CHAN
03:13:04
Thank you and good night XD
Ronald LUI
03:13:09
Thank you veer much for attending lecture.
Ho Renee TIN
03:13:09
Happy Easter!
Ho Renee TIN
03:13:16
Thank you so much!
Daixi HONG
03:13:20
thank you and good night
Zhe CHEN
03:13:30
Thank you