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Gamma Correction (ACC) Introduction

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2024年6月13日发(作者:鄢昆鹏)

【深圳新视纪】-完美高清视频专家

主页:论坛:/forum

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪VGA】【完美色差VGA】【C300】

平板伴侣

V8倍线器

【完美【完美平板伴侣倍线器】

BT智能扩展+电影字幕扩展。平板看电视,不要“大饼脸”。

FaroudjaDCDI技术+专业调校。S-video、SCART(AV,Y/C,RGB)---->HDMI1080p

深圳新视纪--高清视频专家,

【完美P8倍线器】

TruColorbyyekai100%准确彩色再现技术,FaroudjaDCDI技术。

投影看电视,不要大饼脸!

【完美P8倍线器】=AV/S端子/YPbPr转HDMI1080p+VGA转HDMI+HDMI三选一

【完美P8倍线器】=TruColorbyyekai,FaroudjaDCDI,全通道1080p。一根HDMI线,连接一切!

【完美三枪VGAVGA】

两组色差转VGA(纯模拟转换,非数字处理!),两组HDMI转VGA(纯数字DAC转换,真正1080p),特别为三枪投影机、

高端显像管显示器和无高清色差和HDMI输入而有VGA输入逐行电视机而设计。

【视听研究所】

主页:论坛:/forum

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

深圳新视纪--高清视频专家,

Gamma Correction (ACC)

Introduction

Chen Min Zon

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

Http://

Agenda

深圳新视纪--高清视频专家,

Naming

Why Gamma Correction

The Color Temperature Shift

Ideal Case

Data Flow

Example

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

2

Naming

深圳新视纪--高清视频专家,

CMO

AUO

Apple Computer

Hitachi

Samsung

Others

White tracking

Natural Color –Official denomination to outward

Color temperature calibration

Gray tracking

Color tracking

ACC (Accurate Color Capture)

White point balance, White balance, One point

color tracking (OPCT)

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

3

Why Gamma Correction

深圳新视纪--高清视频专家,

•The Transmittance of the LC Spectra ( for medium-

to-high gray scale )

–The transmittance of the liquid crystal cell depends on the

wavelength of the transmitted light and the input level of

the signal.

•Light Leakage of Dark State for LCD Panel ( for

lower gray scale )

–Light leakage comes from pixel design, polarizers, and the

de-polarization effect of color filter.

–Spectra of BLU, polarizers, and color filter would effect the

chromaticites

of dark state

>> The different color temperature in each gray level.

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

4

The Color Temperature Shift

A

深圳新视纪--高清视频专家,

1. The chromaticitisshift to the blue area.

2. The correlated color temperature shift from low to high.

6

5.5

5

4.5

4

3.5

C

C

T

3

2.5

2

1.5

1

0.5

0

050100150

Gray Scale

200250

x 10

4

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

5

Ideal Case (CRT)

深圳新视纪--高清视频专家,

14000

12000

10000

8000

6000

4000

2000

0

C

C

T

5150

Gray Scale

0

GS 0 to 255

Take CRT display for example, chromaticitiesof all gray

levels for neutral colors almost overlap together.

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

6

Data Flow

深圳新视纪--高清视频专家,

8 Bits

8 to 10 bitsOperation

dithering

8 Bits

Gamma LUT

Gamma

Correction core

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

7

Example

深圳新视纪--高清视频专家,

Correlative Color Temperture

20000

CCT

CCT_ACC

18000

16000

14000

12000

C

C

T

10000

8000

6000

4000

2000

0

0708090

1

14

R_Original

G_Original

B_Original

W_Original

W_ACC

R_ACC

G_ACC

B_ACC

0.9

0.8

0.7

0.6

Gray scale

T

%

0.5

0.4

0.3

0.2

0.1

0

250

Gray Scale

1. The chromaticitisshift to the blue area.

2. The correlated color temperature shift from low to high.

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

8

Example:

深圳新视纪--高清视频专家,

Original imageAfter WT modify

9

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

Summary

深圳新视纪--高清视频专家,

The R G gamma curves overlap together and the gamma

value of B curve increases.

Gamma value of “white”almost keep the same, after fine

tuning gamma look-up tables.

Panels with white tracking would render images more naturally,

especially the grays and the warm colors (including the flesh

tones) benefit from this correction.

For the nature images, the white tracking solution can render

the images content lively and colorful since the bluish issue is

removed

White balance technology for TV application LCD panels, or

TCO 03”standard ( grayscale linearity ) for OA LCD panels,

would be the essential characteristic for good image quality.

Total time for fine turning grayscale linearity is about 3 hours.

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

10

2024年6月13日发(作者:鄢昆鹏)

【深圳新视纪】-完美高清视频专家

主页:论坛:/forum

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪VGA】【完美色差VGA】【C300】

平板伴侣

V8倍线器

【完美【完美平板伴侣倍线器】

BT智能扩展+电影字幕扩展。平板看电视,不要“大饼脸”。

FaroudjaDCDI技术+专业调校。S-video、SCART(AV,Y/C,RGB)---->HDMI1080p

深圳新视纪--高清视频专家,

【完美P8倍线器】

TruColorbyyekai100%准确彩色再现技术,FaroudjaDCDI技术。

投影看电视,不要大饼脸!

【完美P8倍线器】=AV/S端子/YPbPr转HDMI1080p+VGA转HDMI+HDMI三选一

【完美P8倍线器】=TruColorbyyekai,FaroudjaDCDI,全通道1080p。一根HDMI线,连接一切!

【完美三枪VGAVGA】

两组色差转VGA(纯模拟转换,非数字处理!),两组HDMI转VGA(纯数字DAC转换,真正1080p),特别为三枪投影机、

高端显像管显示器和无高清色差和HDMI输入而有VGA输入逐行电视机而设计。

【视听研究所】

主页:论坛:/forum

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

深圳新视纪--高清视频专家,

Gamma Correction (ACC)

Introduction

Chen Min Zon

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

Http://

Agenda

深圳新视纪--高清视频专家,

Naming

Why Gamma Correction

The Color Temperature Shift

Ideal Case

Data Flow

Example

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

2

Naming

深圳新视纪--高清视频专家,

CMO

AUO

Apple Computer

Hitachi

Samsung

Others

White tracking

Natural Color –Official denomination to outward

Color temperature calibration

Gray tracking

Color tracking

ACC (Accurate Color Capture)

White point balance, White balance, One point

color tracking (OPCT)

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

3

Why Gamma Correction

深圳新视纪--高清视频专家,

•The Transmittance of the LC Spectra ( for medium-

to-high gray scale )

–The transmittance of the liquid crystal cell depends on the

wavelength of the transmitted light and the input level of

the signal.

•Light Leakage of Dark State for LCD Panel ( for

lower gray scale )

–Light leakage comes from pixel design, polarizers, and the

de-polarization effect of color filter.

–Spectra of BLU, polarizers, and color filter would effect the

chromaticites

of dark state

>> The different color temperature in each gray level.

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

4

The Color Temperature Shift

A

深圳新视纪--高清视频专家,

1. The chromaticitisshift to the blue area.

2. The correlated color temperature shift from low to high.

6

5.5

5

4.5

4

3.5

C

C

T

3

2.5

2

1.5

1

0.5

0

050100150

Gray Scale

200250

x 10

4

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

5

Ideal Case (CRT)

深圳新视纪--高清视频专家,

14000

12000

10000

8000

6000

4000

2000

0

C

C

T

5150

Gray Scale

0

GS 0 to 255

Take CRT display for example, chromaticitiesof all gray

levels for neutral colors almost overlap together.

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

6

Data Flow

深圳新视纪--高清视频专家,

8 Bits

8 to 10 bitsOperation

dithering

8 Bits

Gamma LUT

Gamma

Correction core

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

7

Example

深圳新视纪--高清视频专家,

Correlative Color Temperture

20000

CCT

CCT_ACC

18000

16000

14000

12000

C

C

T

10000

8000

6000

4000

2000

0

0708090

1

14

R_Original

G_Original

B_Original

W_Original

W_ACC

R_ACC

G_ACC

B_ACC

0.9

0.8

0.7

0.6

Gray scale

T

%

0.5

0.4

0.3

0.2

0.1

0

250

Gray Scale

1. The chromaticitisshift to the blue area.

2. The correlated color temperature shift from low to high.

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

8

Example:

深圳新视纪--高清视频专家,

Original imageAfter WT modify

9

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

Summary

深圳新视纪--高清视频专家,

The R G gamma curves overlap together and the gamma

value of B curve increases.

Gamma value of “white”almost keep the same, after fine

tuning gamma look-up tables.

Panels with white tracking would render images more naturally,

especially the grays and the warm colors (including the flesh

tones) benefit from this correction.

For the nature images, the white tracking solution can render

the images content lively and colorful since the bluish issue is

removed

White balance technology for TV application LCD panels, or

TCO 03”standard ( grayscale linearity ) for OA LCD panels,

would be the essential characteristic for good image quality.

Total time for fine turning grayscale linearity is about 3 hours.

【完美平板伴侣V8倍线器】【完美P8倍线器】【完美三枪】【完美色差】【C300】

平板看电视,不要大饼脸!Faroudja技术 + TruColor by yekai + BT智能扩展 + 电影字幕扩展

10

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