Development of the imaging system based on mesopic vision
基于中间视觉的成像系统研制
基本信息
- 批准号:18560031
- 负责人:
- 金额:$ 1.75万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2006
- 资助国家:日本
- 起止时间:2006 至 2007
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The purpose of this study is to develop the imaging system for mesopic color appearance reproduction. We used an digital camera as an input device and various displays such as the CRT display and the LCD display and even hardcopies as output devices.Human visual system covers a wide range illuminance range from 10^5lx to 10^<-3>lx. This wide dynamic range is achieved with two kinds of photoreceptors in the retina, rods and cones. There are illuminance levels where both rods and cones are active. We have already measured color appearance of color chips under those illuminance levels. Color appearance in mesopic vision differs from that in photopic or scotopic vision. In the present study, we developed the mesopic color appearance model. We compared the real image under any illuminance and the imaginary image predicted by our model to evaluat the performance of our model.Finally we proposed the method to get cone stimulus values and rod stimulus values from the output of the conventional digital camera. The colorimetric calibration was done using a lot of color test charts. The accuracy of the calibration was less than 3 in color difference ΔE^* . Then, we propose an imaging system that provides color appearance of any natural scene under any illuminance level. We also applied the spatial frequency characteristics of human vision to the mesopic imaging system.
本研究的目的是发展一种用于中间视觉颜色外观再现的成像系统。我们使用数码相机作为输入设备,各种显示器,如CRT显示器和LCD显示器,甚至硬拷贝作为输出设备<-3>。这种宽的动态范围是通过视网膜中的两种光感受器(视杆细胞和视锥细胞)来实现的。视杆细胞和视锥细胞都活跃时,存在照度水平。我们已经在这些照度水平下测量了色片的颜色外观。中间视觉中的颜色外观不同于明视或暗视中的颜色外观。在本研究中,我们开发了中间视觉颜色外观模型。通过对任意照度下的真实的图像和模型预测的虚拟图像进行比较,对模型的性能进行了评价,并提出了从普通数码相机的输出中获取视锥刺激值和视杆刺激值的方法。使用大量的颜色测试图进行比色校准。色差ΔE^* 的校准精度小于3。然后,我们提出了一种成像系统,提供任何自然场景下的任何照度水平的颜色外观。我们还将人类视觉的空间频率特性应用到中间视觉成像系统中。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
カラーユニバーサルデザインと視覚
色彩通用设计和视觉
- DOI:
- 发表时间:2008
- 期刊:
- 影响因子:0
- 作者:Y. Shibata;and K. Ohtaka(10名;7番目);N.Horiuchi;Kyoji Shibuya;宮崎博司;Keita Izumi;Hiroshi Miyazaki;宮崎博司;K. Takano;M. Hangyo;萩行正憲;藤嶋敏之;神馬洋司;S. H. Lee;宮崎博司;宮崎博司;矢口博久
- 通讯作者:矢口博久
Color universal design and human vision
色彩通用设计与人类视觉
- DOI:
- 发表时间:2008
- 期刊:
- 影响因子:0
- 作者:Y. Shibata;and K. Ohtaka(10名;7番目);N.Horiuchi;Kyoji Shibuya;宮崎博司;Keita Izumi;Hiroshi Miyazaki;宮崎博司;K. Takano;M. Hangyo;萩行正憲;藤嶋敏之;神馬洋司;S. H. Lee;宮崎博司;宮崎博司;矢口博久;Hirohisa Yaguchi
- 通讯作者:Hirohisa Yaguchi
眼・色・光
眼睛/颜色/光线
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:Sho Nagamine;Hirohisa Yaguchi and Yoko Mizokami;矢口博久 他
- 通讯作者:矢口博久 他
カラーアピアランスモデルと国際標準化動向
色彩外观模型及国际标准化趋势
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Y. Shibata;and K. Ohtaka(10名;7番目);N.Horiuchi;Kyoji Shibuya;宮崎博司;Keita Izumi;Hiroshi Miyazaki;宮崎博司;K. Takano;M. Hangyo;萩行正憲;藤嶋敏之;神馬洋司;S. H. Lee;宮崎博司;宮崎博司;矢口博久;Hirohisa Yaguchi;矢口 博久;矢口博久;Hirohisa Yaguchi;矢口 博久;矢口博久
- 通讯作者:矢口博久
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YAGUCHI Hirohisa其他文献
YAGUCHI Hirohisa的其他文献
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{{ truncateString('YAGUCHI Hirohisa', 18)}}的其他基金
Universal Color Image Processing for Color Deficiencies
针对颜色缺陷的通用彩色图像处理
- 批准号:
20560031 - 财政年份:2008
- 资助金额:
$ 1.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Distribution of Color Names in Color Appearance Space
颜色名称在颜色外观空间中的分布
- 批准号:
11650041 - 财政年份:1999
- 资助金额:
$ 1.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Simulation of appearance of objects in low illuminance
模拟低照度下物体的外观
- 批准号:
04650034 - 财政年份:1992
- 资助金额:
$ 1.75万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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