Invention Grant
US08106977B2 Image capturing system and image processing method for applying grayscale conversion to a video signal, and computer-readable recording medium having recorded thereon an image processing program for applying grayscale conversion to a video signal
有权
用于将灰度转换应用于视频信号的图像捕获系统和图像处理方法，以及其上记录有用于将灰度转换应用于视频信号的图像处理程序的计算机可读记录介质
- Patent Title: Image capturing system and image processing method for applying grayscale conversion to a video signal, and computer-readable recording medium having recorded thereon an image processing program for applying grayscale conversion to a video signal
- Patent Title (中): 用于将灰度转换应用于视频信号的图像捕获系统和图像处理方法，以及其上记录有用于将灰度转换应用于视频信号的图像处理程序的计算机可读记录介质
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Application No.: US12368515Application Date: 2009-02-10
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Publication No.: US08106977B2Publication Date: 2012-01-31
- Inventor: Masao Sambongi
- Applicant: Masao Sambongi
- Applicant Address: JP Tokyo
- Assignee: Olympus Corporation
- Current Assignee: Olympus Corporation
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz, Goodman & Chick, PC
- Priority: JP2008-034875 20080215
- Main IPC: H04N5/202
- IPC: H04N5/202 ; H04N5/52 ; G03F3/08 ; G06K9/00
Abstract:
The present invention aims at obtaining a high-quality video signal by reducing tone jumps. A second grayscale conversion characteristic is calculated from a video signal to which a first grayscale conversion process has been applied using a first grayscale conversion characteristic used to convert an M-bit video signal into an N-bit video signal, where M and N are integers and M is larger than N. The first grayscale conversion characteristic is corrected by using the second grayscale conversion characteristic. The first grayscale conversion process is applied to the video signal by using the corrected first grayscale conversion characteristic.
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