• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Novel optical systems design and optimization XI >Extended depth-of-field (EDoF) using sharpness transport across colour channels
【24h】

Extended depth-of-field (EDoF) using sharpness transport across colour channels

机译：使用跨颜色通道的清晰度传输扩展景深（EF）

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

In this paper we present an approach to obtain an extended Depth-of-Field (DoF) for cell phone miniature camera by jointly optimizing optical system and post-capture digital processing techniques. Using a computational imaging approach, we demonstrate how to increase, to a useful operating range, the effective DoF of a specifically designed fixed focus lens operating e.g. at f/2.8. This is achieved with a lens design where the longitudinal chromatic aberration has been increased. This increase is controlled so as to have, for any distance within the extended DoF, at least one colour channel of a RGB image which contains the in-focus scene information (e.g. high frequencies). By determining the sharpest colour (for each region in the digital image) and reflecting its sharpness on the others, we show that it is possible to get a sharp image for all colours through the merged DoF of the three of them. We compare our technique with other approaches that also aimed to increase the DoF such as Wavefront coding.
机译：在本文中，我们提出了一种通过联合优化光学系统和捕获后数字处理技术来获得手机微型相机的扩展景深（DoF）的方法。使用计算成像方法，我们演示了如何将特别设计的定焦镜头的有效DoF（有效景深）提高到有用的工作范围，例如：在f / 2.8。这是通过增加纵向色差的镜头设计实现的。控制该增加，以使得对于扩展的DoF内的任何距离，具有包含焦点对准的场景信息（例如，高频）的RGB图像的至少一个颜色通道。通过确定最锐利的颜色（针对数字图像中的每个区域）并在其他颜色上反映其锐度，我们表明可以通过三种颜色的合并景深获得所有颜色的锐利图像。我们将我们的技术与其他旨在提高自由度的方法进行了比较，例如Wavefront编码。

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