Digital Video
This presentation is the property of its rightful owner.
Sponsored Links
1 / 11

Digital Video Solutions to Midterm Exam 2004 Edited by Yu-Kuang Tu PowerPoint PPT Presentation


  • 57 Views
  • Uploaded on
  • Presentation posted in: General

Digital Video Solutions to Midterm Exam 2004 Edited by Yu-Kuang Tu Confirmed by Prof. Jar-Ferr Yang LAB: 92923 R, TEL: ext. 621 E-mail: [email protected] Page of MPL: http://mediawww.ee.ncku.edu.tw. 2.1. 81 horizontal lines per frame, 2:1 interlace scanning format,

Download Presentation

Digital Video Solutions to Midterm Exam 2004 Edited by Yu-Kuang Tu

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Digital video solutions to midterm exam 2004 edited by yu kuang tu

Digital Video

Solutions to Midterm Exam 2004

Edited by Yu-Kuang Tu

Confirmed by Prof. Jar-Ferr Yang

LAB: 92923 R, TEL: ext. 621

E-mail: [email protected]

Page of MPL: http://mediawww.ee.ncku.edu.tw


Digital video solutions to midterm exam 2004 edited by yu kuang tu

2.1.

81 horizontal lines per frame, 2:1 interlace scanning format,

aspect ratio of 4:3, 20 frames per second.

81個

(a)

(b)

(c)

(d)

Horizontal

……

vertical


Digital video solutions to midterm exam 2004 edited by yu kuang tu

vertical

vertical

Incorrect time

2.2.

(a)

(b)

(c)

(d)

(e)

(f)

水平掃描電壓波幅不足

In Fig. g,H bias ckt has problem

normal

abnormal

垂直掃描電壓波幅不足

In Fig. g,V bias ckt has problem

Clock不同步

In Fig. g,V bias ckt has problem

Color decoder有問題

In Fig. h, the video amp (lower one) or 2~4.2M BPF has problem

Video Amplifier (AGC) 有問題

In Fig. h, the video amp (upper one) has problem with improper DC offset.

Blanking level 不正常

In Fig. h, the video amp (upper one) has problem


Digital video solutions to midterm exam 2004 edited by yu kuang tu

2.3.

(a)

(b)

(c)

Two-event (two examples)

Huffman code:

A1A1 0 or 1

A1A0 11 or00

A0A1 100 or011

A0A0 101 or010

1

A1A1 0.766

1

A1A0 0.11

0

1

0.2356

A0A1 0.11

0

0.1256

A0A0 0.0156

0

0.0

0.125

1.0

A0

A1

0.33<W<0.414

W=3/8011

0.125

0.234

1.0

A0

A1

0.234

0.33

1.0

A0

A1

0.33

0.414

1.0

A0

A1


Digital video solutions to midterm exam 2004 edited by yu kuang tu

2.3.

(d)

0.0

0.125

1.0

A0

A1

0.125

0.234

1.0

W=0.375

A1A1A1

A0

A1

0.234

0.33

1.0

A0

A1


Digital video solutions to midterm exam 2004 edited by yu kuang tu

y[2n]

↑2

G0(z)

H0(z)

↓2

x[n]

x[n]

y[2n+1]

↑2

G1(z)

H1(z)

↓2

2.4.


Digital video solutions to midterm exam 2004 edited by yu kuang tu

2.4.

-2 1 0 1 2

h0

h1

h0

h1

h0

g0

g0

g0

g0

g0

g1

g1

g1

g1

g1

The last row is the reconstructed synthesis data


Digital video solutions to midterm exam 2004 edited by yu kuang tu

42

48

0

23

0

10

0

12

-26

0

0

12

3

0

10

0

0

19

-12

0

0

7

0

-4

14

0

14

0

0

0

0

0

2.7.

Initialization:

LIP: { (0,0)42, (0,1)23, (1,0)-26, (1,1)12 }

LIS: { (0,1)D, (1,0)D, (1,1)D }

LSP: {}

Significant Pass: 10,0,0,0 0,0,0

LIP: { (0,0)42, (0,1)23, (1,0)-26, (1,1)12 }

LIS: { (0,1)D, (1,0)D, (1,1)D }

LSP: { (0,0)42 }

Refinement Pass:

LIP

LIS


Digital video solutions to midterm exam 2004 edited by yu kuang tu

*

40

23

24

0

10

12

0

-26

-24

12

0

0

3

0

10

19

24

-12

0

0

7

-4

0

0

14

0

14

0

0

0

0

2.7.

LIS

LIP

Significant Pass: 10,11,0 0,1;10.0.0.0,0

LIP: { (0,1)23,(1,0)-26, (1,1)12, (2,1)-12,

(3,0)14, (3,1)14 }

LIS: { (0,1)D, (1,0)D, (1,1)D }

LSP: { (0,0)26, (0,1)23,(1,0)-26,(2,0)19 }

Refinement Pass: 0


Digital video solutions to midterm exam 2004 edited by yu kuang tu

*

40

*

24

0

10

0

12

*

-24

12

12

0

3

10

0

24

*

-12

(-)12

7

0

-4

0

0

14

0

14

0

0

0

0

SPIHT

25bits

Significant Pass: 10,11,10….

LIP: {(1,1)12, (2,1)-12, (3,0)14, (3,1)14 }

LIS: { (0,1)D, (1,1)D }

LSP: { (0,0)26, (0,1)23, (1,0)-26, (2,0)19 }

Refinement Pass: …


Digital video solutions to midterm exam 2004 edited by yu kuang tu

3.1.

3.2.

3.3.

3.4.

3.5.

F,…remove temporal redundancy…, …interframe coding…

F, …spatial-domain data…., …a spatial redundance removal…

F, RLC is a data compression technique.

F, However, there still exist some ways depending on data property to find an alternative scanning order to improve the coding efficiency actually

F,With the same rate,the hierarchical mode needs more computation and obtains less compression ratio.


  • Login