| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2023-03-30 |
| タイトル |
|
|
タイトル |
Comparative Study on Required Bit Depth of Gamma Quantization for Digital Cinema using Contrast and Color Difference Sensitivities |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
digital cinema |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
human visual system |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
contrast sensitivity function |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
quantization bit depth |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
color difference |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
CIE 1976 L*a*b* |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 著者 |
古川, 功
鈴木, 純司
Isao, Furukawa
Junji, Suzuki
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
A specification for digital cinema systems which deal with movies digitally from production to delivery and projection on the screens is recommended by DCI (Digital Cinema Initiative), and systems based on this specification have been developed and installed in theaters. The parameters of the systems that play an important role in determining image quality include image resolution, quantization bit depth, color space, gamma characteristics, and data compression methods. This paper comparatively discusses a relation between required bit depth and gamma quantization using both of a human visual system for grayscale images and a color difference model for color images. The required bit depth obtained from a contrast sensitivity function against grayscale images monotonically decreases as the gamma value increases, while it has a minimum value when the gamma is 2.9 to 3.0 from CIE 1976 L*a*b* color difference model. It is also shown that the bit depth derived from the contrast sensitivity function is one bit greater than that derived from the L*a*b* color difference model at the gamma value of 2.9. |
| 書誌情報 |
広島工業大学紀要. 研究編
巻 46,
p. 187-196,
発行日 2012-02
|
| 出版者 |
|
|
出版者 |
広島工業大学 |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
13469975 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11599110 |
| 論文ID（NAID） |
|
|
関連タイプ |
isIdenticalTo |
|
|
識別子タイプ |
NAID |
|
|
関連識別子 |
40019182703 |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
kenkyuhen46187.pdf (1.1 MB)
