Method and device for reducing osd brightness in video images
A video image and brightness technology, applied in the field of communication, can solve the problem of reducing the brightness of OSD display, so as to ensure visual comfort, reduce display brightness, and improve the effect of visual experience
Active Publication Date: 2018-09-25
SHENZHEN TCL DIGITAL TECH CO LTD
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[0005] The main purpose of the present invention is to solve the technical problem that the prior art cannot reduce the display brightness of the OSD under the premise of keeping the display brightness of images other than the OSD in the video signal unchanged, so as to ensure the visual comfort of the user when watching a video program containing the OSD
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[0042] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention, and in the absence of conflict, the present invention The embodiments and the features in the embodiments can be combined with each other.
[0043] The present invention provides a method for reducing the brightness of an OSD in a video image. refer to figure 1 , figure 1 It is a schematic flowchart of an embodiment of a method for reducing OSD brightness in a video image according to the present invention. In this embodiment, the method for reducing the OSD brightness in the video image includes:
[0044] Step S10 , judging whether there is an image frame containing an OSD in the video signal.
[0045] The specific processing of this step S10 is as follows: deter...
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Disclosed in the present invention is a method for reducing on-screen display (OSD) brightness in a video image, the method is as follows. The method for reducing OSD brightness in a video image comprises: judging whether an image frame including an OSD is present in a video signal; when an image frame including an OSD in the video signal is present, determining a position and a brightness value corresponding to the OSD in the image frame; and reducing the display brightness of the OSD in the image frame when the video signal is re-displayed according to the position and the brightness value corresponding to the OSD in the image frame. Also disclosed in the present invention is a device for reducing the OSD brightness in a video image. The method and device for reducing the OSD brightness in a video image provided in the present invention could reduce the display brightness of an OSD while maintaining the display brightness of the images outside the OSD in a video signal, thus ensuring the visual comfort of a user when watching video programs including OSDs, as well as enhancing the visual experience of the user.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a method and a device for reducing the brightness of an OSD in a video image. Background technique [0002] When playing a Blu-ray DVD movie or other TV programs through a TFT LCD TV, there will usually be an OSD (on-screen display) dialogue with white characters on a black background. The peak brightness of the OSD with white characters on a black background generally corresponds to the maximum brightness of the screen. [0003] High Dynamic Range (HDR) TVs or monitors usually have a higher screen brightness, with a maximum brightness of 700-800 nits in a full white field and a peak brightness of more than 1000 nits. There are generally two types of scenes where the video signal has brightness peak white, one is that the video signal contains OSD, and the other is that the video signal contains images such as stars and lights. Among them, the frequency of brightness peak...
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IPC IPC(8): H04N21/431H04N21/485H04N5/445
CPCH04N21/4312H04N21/47H04N21/485H04N21/4854
Inventor 杨福军谢仁礼张晓东
Owner SHENZHEN TCL DIGITAL TECH CO LTD