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A Method for Realizing Video Field Transformation

A conversion method and video technology, which is applied in the field of video editing, can solve problems such as pixel loss and picture quality degradation, and achieve the effects of ensuring output quality, shortening working time, and reducing working costs

Active Publication Date: 2018-06-26
CHINA DIGITAL VIDEO BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there is no method specifically for converting video frames into video fields. Therefore, after converting a video file into a video field, pixels will be lost, resulting in a decrease in picture quality.

Method used

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  • A Method for Realizing Video Field Transformation
  • A Method for Realizing Video Field Transformation

Examples

Experimental program
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Embodiment 1

[0021] figure 1 It is a flowchart of a method for implementing video field conversion provided by an embodiment of the present invention. Such as figure 1 As shown, the method includes the following steps:

[0022] Step 101, receiving a video source file.

[0023] Step 102. Obtain an output target resolution, where the output target resolution includes: output standard definition, high definition, super definition resolution or a resolution set by the user.

[0024] Step 103: Determine the frame scan mode of the video source file, where the frame scan mode includes: progressive scan and interlaced scan.

[0025] Step 104, if the original video file is an interlaced file, the odd lines and even lines of each frame in the video source file are separated, and then all the odd lines and even lines in the video source file are converted into In the output target resolution, the odd-numbered lines and even-numbered lines of each frame include: odd-numbered lines are the first fi...

Embodiment 2

[0030] figure 2 It is a flowchart of a method for implementing video field conversion provided by an embodiment of the present invention. Such as figure 2 As shown, the method includes the following steps:

[0031] Step 201, receiving a video source file.

[0032] Step 202. Obtain an output target resolution, where the output target resolution includes: output standard definition, high definition, super definition resolution or a resolution set by the user.

[0033] Step 203: Determine the frame scan mode of the video source file, where the frame scan mode includes: progressive scan and interlaced scan.

[0034] Step 204, if the original video file is an interlaced file, the odd lines and even lines of each frame in the video source file are separated, and then all the odd lines and even lines in the video source file are converted into In the output target resolution, the odd-numbered lines and even-numbered lines of each frame include: odd-numbered lines are the first ...

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Abstract

The invention discloses a method for converting video fields, which comprises the steps as following: receiving a video source file; obtaining the resolution ratio of an output target; judging the frame scanning mode of the video source file; isolating the odd rows and the even rows of each frame of the video source file if the video source file is an interstage scanning file, and converting all odd rows and even rows of the video source file into the resolution ratio of the output target; converting the resolution ratio of the video source file into the resolution ratio of the output target if the video source file is a non-interlaced scanning file; and extracting the output of the odd rows and the even rows as the video fields. By adopting the method for converting the video fields, the working time is greatly shortened, the working cost is lowered, and the output quality of image is ensured.

Description

technical field [0001] The invention relates to the field of video editing, in particular to a method for realizing video field conversion. Background technique [0002] Each TV frame is produced by scanning the screen twice, with the lines of the second scan just filling the gap left by the first scan, and each scan is called a field. To obtain a frame with maximum detail, it is necessary to combine information from both fields. The concept is actually very simple, but if you consider the dynamic picture, it is not so easy. Because the camera will scan the two fields sequentially, all the files in the image will be moved to different positions in the second field than in the first field. Although it makes the motion of the TV screen smoother, it also increases editing. time difficulty. [0003] When a computer plays video on a monitor, it just shows a series of complete frames without using the TV trick of interlaced fields. As a result, video formats designed for compu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01
Inventor 张婷
Owner CHINA DIGITAL VIDEO BEIJING
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