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标题: A System for Editing Sky Images Using an Image Database [打印本页]

作者: 彬彬 时间: 2012-1-5 08:55
标题: A System for Editing Sky Images Using an Image Database
Abstract

Synthetic images of outdoor scenes generated by computer graphics

usually contain the sky as background. The appearance of the sky

plays an important role in enhancing the reality of scenes. In this

paper, we propose an intuitive and interactive system for synthesizing

sky images that can reflect the user’s intention. Our system

consists of two steps. The first step is a sky generation step. The

luminance distribution and colors of the sky are generated using

our intuitive user interface. The second step is a cloud composition

step. We have prepared a database of photographs of real clouds.

Our system searches the database for cloud photographs that are

suitable for the synthesized sky. The user selects the clouds in the

search results and they are composited into the sky image. By using

our system, the user can easily generate desired sky images.

CR Categories: I.4.9 [Computing Methodologies]: Image Processing

and Computer Vision—Applications;

Keywords: sky, cloud, image processing

1 Introduction

The sky plays an important role as the background of outdoor

scenes. Its color changes variously, and the shapes of clouds in

the sky are very diverse. The sky gives a wide range of impressions

and is an important factor in outdoor scenes. Therefore, many

approaches have been proposed to synthesize realistic images of

the sky. One of the major approaches is to calculate sky colors

based on physical simulations [Dobashi et al. 1994]. However, it

is often difficult to obtain the desired results by manually adjusting

the complicated parameters involved in physical simulation. In

[Tao et al. 2009], a system for efficiently searching sky photographs

from a huge database is presented. This system allows the user to

search photographs intuitively by specifying sky attributes such as

sky category and sun position. However, we cannot be certain that

the database will always contain the intended sky photograph.

This paper proposes an intuitive system for synthesizing sky images

that can reflect the user’s intention. We take into account three

factors: sky distribution, sky color, and clouds.

作者: 彬彬 时间: 2012-1-13 11:20

作者: 奇 时间: 2012-1-27 23:29
新词新语迎新年, 年味十足乃作年.

作者: tc 时间: 2012-6-8 23:26
再看一看，再顶楼主

作者: tc 时间: 2012-7-6 23:25
顶!学习了!阅!

作者: 奇 时间: 2012-7-12 23:25
都闪开，介个帖子，偶来顶

作者: 驰骋的风 时间: 2012-7-13 09:15

美国宇航局（NASA）推出3D版本宇宙飞船App

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搜搜地图2.0新版体验新增3D地图模式

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百龄坛携手***ment打造限量版3D威士忌瓶身

作者: 驰骋的风 时间: 2012-7-13 09:16

美国宇航局（NASA）推出3D版本宇宙飞船App

模拟高清宽动态3D降噪技术

3D眼镜行业标准有望年内出台

MIT研发新型裸眼3D技术 3D眼镜将成浮云

搜搜地图2.0新版体验新增3D地图模式

信泽传媒在家乐福掀起3D互动潮

心动游戏进军动漫产业 3D大片惊艳亮相CCG

百龄坛携手***ment打造限量版3D威士忌瓶身

作者: 晃晃 时间: 2012-7-22 23:25
先顶上去，偶要高亮加精鸟！

作者: 菜刀吻电线 时间: 2012-10-31 23:25
楼主收集的可真全哦

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