• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Seeing and perceiving >Depth of Field Affects Perceived Depth-width Ratios in Photographs of Natural Scenes
【24h】

Depth of Field Affects Perceived Depth-width Ratios in Photographs of Natural Scenes

机译：景深影响自然景物照片中的景深比

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of the study was to find out how much influence depth of field has on the perceived ratio of depth and width in photographs of natural scenes. Depth of field is roughly defined as the distance range that is perceived as sharp in the photograph. Four different semi-natural scenes consisting of a central and two flanking figurines were used. For each scene, five series of photos were made, in which the distance in depth between the central figurine and the flanking figurines increased. These series of photographs had different amounts of depth of field. In the first experiment participants adjusted the position of the two flanking figurines relative to a central figurine, until the perceived distance in the depth dimension equaled the perceived lateral distance between the two flanking figurines. Viewing condition was either monocular or binocular (non-stereo). In the second experiment, the participants did the same task but this time we varied the viewing distance. We found that the participants' depth/width settings increased with increasing depth of field. As depth of field increased, the perceived depth in the scene was reduced relative to the perceived width. Perceived depth was reduced relative to perceived width under binocular viewing conditions compared to monocular viewing conditions. There was a greater reduction when the viewing distance was increased. As photographs of natural scenes contain many highly redundant or conflicting depth cues, we conclude therefore that local image blur is an important cue to depth. Moreover, local image blur is not only taken into account in the perception of egocentric distances, but also affects the perception of depth within the scene relative to lateral distances within the scene.
机译：该研究的目的是找出景深对自然景物照片中感知到的深度与宽度之比有多大影响。景深粗略地定义为在照片中被视为清晰的距离范围。使用了四个不同的半自然场景，包括一个中央小雕像和两个侧面小雕像。对于每个场景，拍摄了五组照片，其中中央小雕像和侧面小雕像之间的深度距离增加了。这些系列的照片具有不同的景深。在第一个实验中，参与者调整了两个侧面小雕像相对于中央雕像的位置，直到深度尺寸中的感知距离等于两个侧面小雕像之间的感知横向距离。观察条件为单眼或双眼（非立体）。在第二个实验中，参与者执行了相同的任务，但是这次我们改变了观看距离。我们发现，参与者的深度/宽度设置随景深的增加而增加。随着景深的增加，场景中的感知深度相对于感知宽度减小了。与单眼观察条件相比，在双眼观察条件下感知深度相对于感知宽度减小。当增加观看距离时，减少幅度更大。由于自然场景的照片包含许多高度冗余或相互矛盾的深度提示，因此我们得出结论，局部图像模糊是深度的重要提示。此外，局部图像模糊不仅在以自我为中心的距离的感知中被考虑，而且相对于场景内的横向距离影响场景内的深度感知。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号