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MMAT5390202021 - Shared screen with speaker view
Ray JIN
01:05:30
yes
Ka Lung CHAN
01:05:30
YES
Chin Ting Timothy TSANG
01:05:30
yes
Ho Renee TIN
01:05:32
yes
Zhe CHEN
01:05:33
yes
Timothy
01:08:40
yes
Timothy
01:08:44
if possible
Timothy
01:09:03
thank you very much!
Jin QIAN
01:09:49
But some students have classes on Saturday morning, so starting Friday afternoon may not be appropriate
Ka Lam LEE
01:10:10
What about start at evening
Timothy
01:10:57
yes
Hoi Ying FONG
01:11:06
yes
Jin QIAN
01:11:19
ok,thanks
Ray JIN
01:13:00
ok
Gai HUANG
01:13:04
ok
Ho Renee TIN
01:13:05
ok
Wing Suet CHU
01:13:11
ok
Timothy
01:13:16
thank you for your consideration
Hoi Ying FONG
01:13:26
Ok,thank you
Jiaji LIN
01:13:32
will we still have class next week?
Timothy
01:13:55
since other class skip the lesson due to mid term
Timothy
01:15:02
yes
Jiaji LIN
01:15:21
you can change exam to thursday haha
Ka Lung CHAN
01:15:24
Yes
Jiaji LIN
01:16:55
ok thanks
Ka Lung CHAN
01:24:06
Yes
James Tung
01:24:09
Yes
Ho Renee TIN
01:24:11
yes
Zhe CHEN
01:24:14
yes
Ho Renee TIN
01:31:46
ok
James Tung
01:31:46
Yes
Ka Lung CHAN
01:31:51
yes
Peiqin LI
01:31:51
yes
Jiaji LIN
01:32:17
Can H=0?
Ka Lung CHAN
01:33:42
what will be the source of the noise in real case?
Ho Renee TIN
01:35:36
how about taking photo with high iso value?
Ka Lung CHAN
01:35:47
Yes. Thank yoi
Ho Renee TIN
01:36:06
true
Ka Lung CHAN
01:40:35
can this apply to turbulence due to thermal?
Ka Lung CHAN
01:41:25
ok. thank you.
Ka Lung CHAN
01:43:31
Yes. Thanks a lot
Ka Lung CHAN
01:45:37
YES
Zhe CHEN
01:47:02
yes
Ray JIN
01:47:02
yes
James Tung
01:47:02
yes
Ho Renee TIN
01:47:03
yes
Chen CHEN
01:47:05
yes
James Tung
01:53:19
Not weighted sum?
James Tung
01:55:37
ok
Chen CHEN
01:56:23
OK
Ray JIN
01:56:23
yes
Ka Lung CHAN
01:56:28
Yes
Gai HUANG
01:56:30
okl
Ray JIN
01:58:17
yes
Ka Lung CHAN
01:58:19
yes
Ho Renee TIN
01:59:43
ok
James Tung
01:59:46
yes
Ka Lung CHAN
02:04:26
Yes
Chen CHEN
02:04:26
yes
Ho Renee TIN
02:04:27
ok
Timothy
02:04:27
yes
Wing Suet CHU
02:04:31
yes
Sisi XIAO
02:04:34
yes
Ho Renee TIN
02:09:03
yes
Daixi HONG
02:09:04
yes
Zhe CHEN
02:09:06
yes
Ka Lung CHAN
02:09:06
yes
Ray JIN
02:19:17
yes
Chen CHEN
02:19:17
yes
Ka Lung CHAN
02:19:21
YES
Ka Lung CHAN
02:21:45
yes
Chen CHEN
02:21:47
yes
Hoi Ying
02:21:48
yes
Ray JIN
02:25:28
yes
Ka Lung CHAN
02:25:29
yes
Ho Renee TIN
02:25:29
ok
Chen CHEN
02:25:30
yes
Zhe CHEN
02:25:33
yes
Ka Lung CHAN
02:28:32
yes
Gai HUANG
02:28:42
ok
Ka Lung CHAN
02:29:54
low pass
Ray JIN
02:29:58
Low
Gai HUANG
02:30:04
low
Ka Lung CHAN
02:34:57
YES
Daixi HONG
02:34:58
yes
Chen CHEN
02:34:58
yes
James Tung
02:35:01
yes
Ka Lung CHAN
02:35:43
YES
Ray JIN
02:35:44
yes
Ho Renee TIN
02:35:47
ok
Daixi HONG
02:35:47
yes
Gai HUANG
02:35:49
yes
Ho Renee TIN
02:38:36
if we do not centralise the image and do the direct inverse filtering, will it be better?
Ho Renee TIN
02:42:22
oh it doesn't work
Ronald LUI
02:47:33
it will be the same
Ronald LUI
02:47:39
The noise will still be boast up
Ronald LUI
02:51:02
If we do not do centralisation, H(u,v) will be small in the centre. And N(u,v) has significant impact in the central region as well. Coz central region corresponds to the high frequency region without centralisation…
Ronald LUI
02:51:10
So…the situation is still the same.
Ronald LUI
02:51:28
We consider centralisation just for the ease of explanation.
Ronald LUI
02:51:40
Are you with me, Renee?
Ho Renee TIN
02:53:04
yes
Ho Renee TIN
02:53:09
Thank you
Ka Lung CHAN
02:53:31
yes
Ray JIN
02:53:31
yes
Ho Renee TIN
02:53:32
yes
Ka Lung CHAN
02:56:31
YES
Chen CHEN
03:06:13
yes
Ho Renee TIN
03:06:14
yes
Ray JIN
03:06:20
Yes,get it.
Ka Lung CHAN
03:06:54
YES
Ka Lung CHAN
03:08:30
If the image does not do centralisation, then the Butterworth filter (B) is different as the current shown image with a pulse at the center?
Ka Lung CHAN
03:09:01
OK. Thank you
Ka Lung CHAN
03:10:06
Yes
Ka Lung CHAN
03:11:47
does larger D means that the passing frequency larger?
Ka Lung CHAN
03:12:59
a bit confuse about the relation of frequency and the image blur
Ka Lung CHAN
03:14:03
yes
Ka Lung CHAN
03:16:13
OK. Thank you.
James Tung
03:17:11
Gaussian works as well?
James Tung
03:20:35
ok
Ka Lung CHAN
03:25:16
YES
Ho Renee TIN
03:25:16
yes
Ray JIN
03:25:17
yes
Chen CHEN
03:25:20
yes
James Tung
03:25:35
ok
James Tung
03:26:29
yes
Ray JIN
03:26:38
yes
Ka Lung CHAN
03:26:39
YES
Zhe CHEN
03:26:40
yes
Wing Suet CHU
03:26:41
yes
Ho Renee TIN
03:26:44
ok
Ka Lung CHAN
03:28:23
YES
Hoi Ying
03:28:23
yes
Ho Renee TIN
03:28:26
ok
Gai HUANG
03:28:28
ok
Ka Lung CHAN
03:31:32
YES
Ray JIN
03:31:33
yes
Ka Lung CHAN
03:36:25
similar for me
Ka Lung CHAN
03:41:07
add another motion direction?
Timothy
03:41:07
reflection of light?
Ho Renee TIN
03:41:10
non linear motion?
Ray JIN
03:41:20
rotation?
Ka Lam LEE
03:42:40
Best way
Ka Lung CHAN
03:43:16
still showing the ppt?
Ka Lung CHAN
03:44:01
but the high speed camera will consider a very short period of time?
Ray JIN
03:48:30
yes
Ho Renee TIN
03:48:31
It seems that we don't need actual noise to signal ratio by looking at the result, then why do we have to introduce the ratio rather than just introducing the constant K?
Ho Renee TIN
03:50:51
Thank you
Ka Lung CHAN
03:51:25
Besides frequency, are there any factor that will affect our feeling of image blur? If frequency is the only factor, then the passing frequency will be enough for designing a filter? Is it the noise or non-linearity besides the frequency?
Ka Lung CHAN
03:53:09
Then ideal low pass filter will be the best? because of the wave?
Ka Lung CHAN
03:54:00
ok. Thank you
Ka Lung CHAN
03:55:10
Yes thank you
Ho Renee TIN
03:55:25
Good night~
Timothy
03:55:27
thank you
Ronald LUI
03:55:29
Thank you very much for attending the lecture.
James Tung
03:55:29
Thanks
Wing Suet CHU
03:55:31
thank you
Ka Lam LEE
03:55:31
Thank you very much