Invention Grant
- Patent Title: Image recording apparatus and method, image reproducing apparatus and method, and recording medium on which image processing program is recorded
- Patent Title (中): 图像记录装置和方法，图像再现装置和方法以及记录有图像处理程序的记录介质
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Application No.: US09761623Application Date: 2001-01-17
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Publication No.: US07233414B2Publication Date: 2007-06-19
- Inventor: Sadami Okada , Satoshi Ejima , Ken Utagawa , Hideaki Matsuda , Kenichi Ishiga
- Applicant: Sadami Okada , Satoshi Ejima , Ken Utagawa , Hideaki Matsuda , Kenichi Ishiga
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge PLC
- Priority: JP2000-009371 20000118
- Main IPC: H04N1/40
- IPC: H04N1/40 ; G06K15/00
Abstract:
The present invention is intended to record image data having a wide dynamic range is a file together with image data having a narrow dynamic range. First, an image recording apparatus separately gradation-converts image data to be recorded into primary data having a narrow dynamic range and secondary data having a wide dynamic range. Then, the image recording apparatus calculates data that determines correlation between the primary data and secondary data and employs the calculated data as tertiary data. The image recording apparatus records the primary data and the tertiary data in a file. On the other hand, an image reproducing apparatus reads out primary data and tertiary data that were recorded in the above manner and reproduces secondary data having a wide dynamic range based on the primary data and the tertiary data.
Public/Granted literature
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