公开(公告)号：US20150350513A1

公开(公告)日：2015-12-03

申请号：US14292792

申请日：2014-05-30

Applicant: Apple Inc.

Inventor： Xuemei Zhang ,  Marius Tico ,  Yingjun Bai ,  Farhan A. Baqai ,  Fabio Riccardi ,  Juanqing Chen ,  Paul M. Hubel ,  George E. Williams ,  Todd S. Sachs ,  Yongfang Liang

IPC: H04N5/235 ,  H04N5/232 ,  G06T5/00 ,  H04N5/265 ,  H04N5/91 ,  G06K9/46

CPC classification number: H04N5/2355 ,  G06K9/4642 ,  G06K9/4661 ,  G06T5/001 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/10144 ,  G06T2207/20016 ,  G06T2207/20208 ,  G06T2207/20221 ,  H04N5/23245 ,  H04N5/265 ,  H04N5/91

Abstract: Systems, methods, and computer readable media to capture and process high dynamic range (HDR) images when appropriate for a scene are disclosed. When appropriate, multiple images at a single—slightly underexposed—exposure value are captured (making a constant bracket HDR capture sequence) and local tone mapping (LTM) applied to each image. Local tone map and histogram information can be used to generate a noise-amplification mask which can be used during fusion operations. Images obtained and fused in the disclosed manner provide high dynamic range with improved noise and de-ghosting characteristics.

Abstract translation: 公开了适用于场景时捕获和处理高动态范围（HDR）图像的系统，方法和计算机可读介质。 在适当的情况下，捕获单个稍微曝光不足的曝光值的多个图像（使恒定的支架HDR捕获序列）和本地色调映射（LTM）应用于每个图像。 本地色调图和直方图信息可用于生成可在融合操作期间使用的噪声放大掩模。 以所公开的方式获得和融合的图像提供高动态范围，具有改进的噪声和去重影特性。