Image processing method
An image processing and key frame technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as difficult for users to grasp and unfriendly operation methods
Active Publication Date: 2014-03-12
ALI CORP
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Problems solved by technology
[0003] When fast-forwarding / rewinding a program, the subtitles are not displayed on the program screen, so it is difficult for users to grasp clear information from the fast-forwarding / rewinding program screen
In the case of not displaying subtitles, if the user wants to search for a specific frame or segment in the program in a fast-forward / rewind mode, the user can only guess the content of the program from the frame that does not contain subtitles (such as actor Dialogue), which is not user-friendly for users who want to quickly search for relevant information
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[0049] Please refer to figure 1 and figure 2 , figure 1 Processing a video stream S for an image processing method according to an embodiment of the present invention In A functional block diagram of the video decoding engine 100 and the display 120 coupled to the video decoding engine 100, figure 2 for figure 1 Medium Video Streaming S In timing diagram. The video decoding engine 100 processes the video stream S according to the image processing method of an embodiment of the present invention In . In this embodiment, the video decoding engine 100 is a microprocessor. In another embodiment of the present invention, the video decoding engine 100 is a kind of software or firmware, and can be executed by specific hardware (such as a central processing unit).
[0050] video streamingS In There are a plurality of video frames 210 and a plurality of subtitle information 220 relative to the video frames 210 on the time axis. Notably, although figure 2 Indicates the vid...
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The invention provides an image processing method, which is used for processing a video stream. The video stream is provided with a plurality of video frames and a plurality of caption information relative to the video frames. The video frames are divided into a plurality of key frames and a plurality of non-key frames. When the video stream is played in a fast forward or fast backward way at speed faster than general play speed, a video decoding engine can find at least one piece of caption information and a plurality of key frames within a preset time interval far away from the current play time. Moreover, the video decoding engine selectively outputs the key frames within the preset time interval according to the display starting time or display ending time of the found caption information. Therefore, by taking the data of captions as indexes, the video frames of the video stream can be searched and played.
Description
technical field [0001] The present invention relates to an image processing method, and in particular relates to an image processing method which uses subtitle data as an index to search for video frames to be played. Background technique [0002] When playing a video, it is often necessary to fast forward / rewind the program. The current approach is that subtitle information is not displayed during fast forward / rewind, and audio is not played. Only video images need to be decoded. At this time, the decoding of the video image is to determine whether to jump according to the time points when some key frames (such as I frames) appear. Since the time when the key frames appear in the stream is random, the time interval of each jump is not the same. Not all are equal. [0003] When fast-forwarding / rewinding a program, since no subtitles are displayed on the program screen, it is difficult for the user to grasp clear information from the fast-forwarding / fast-rewinding program s...
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IPC IPC(8): H04N21/434H04N21/4405H04N21/435H04N21/431
Inventor 胥能
Owner ALI CORP