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首页> 外文会议>International Symposium on Smart Graphics(SG 2006); 20060723-25; Vancouver(CA) >A Photographic Composition Assistant for Intelligent Virtual 3D Camera Systems
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A Photographic Composition Assistant for Intelligent Virtual 3D Camera Systems

机译：智能虚拟3D相机系统的摄影构图助手

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摘要

A human photographer can frame an image and enhance its composition by visualizing how elements in the frame could be better sized or positioned. The photographer resizes elements in the frame by changing the zoom lens or by varying his or her distance to the subject. The photographer moves elements by panning. An intelligent virtual photographer can apply a similar process. Given an initial 3D camera view, a user or application specifies high-level composition goals such as Rule of Thirds or balance. Each objective defines either a One-D interval for image scaling or a Two-D interval for translation. Two-D projections of objects are translated and scaled in the frame according to computed optima. These Two-D scales and translates are mapped to matching changes in the 3D field of view (zoom), dolly-in or out varying subject distance, and rotating the aim direction to improve the composition.
机译：人类摄影师可以通过可视化框架中元素的大小或位置如何可视化来构图并增强其构图。摄影师通过改变变焦镜头或改变他或她到被摄物体的距离来调整框架中元素的大小。摄影师通过平移来移动元素。聪明的虚拟摄影师可以应用类似的过程。给定初始3D摄像机视图后，用户或应用程序会指定高级构图目标，例如“三分法则”或“天平”。每个物镜定义用于图像缩放的一维间隔或用于转换的二维间隔。根据计算出的最优值，对象的二维投影在帧中进行平移和缩放。这些二维比例尺和平移映射到3D视场（缩放）中的匹配变化，多变的进场或出场对象距离以及旋转瞄准方向以改善构图。

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