Method and device of video image zooming processing

A video image and processing method technology, applied in the field of video image scaling processing methods and devices, can solve the problems of poor display effect of key content and the like, and achieve the effect of improving the display effect

Active Publication Date: 2013-08-21
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a video image scaling processing method and device to solve the problem in the prior art that the display effect of key content in the video is poor after zooming the video image

Method used

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  • Method and device of video image zooming processing
  • Method and device of video image zooming processing
  • Method and device of video image zooming processing

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Experimental program
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Embodiment 1

[0034] In Embodiment 1 of the present invention, the determination of the region of interest of the image frame in the video to be processed through the above steps 101 and 102 is described in detail, as figure 2 As shown, it specifically includes the following processing steps:

[0035] Step 201. Establish a three-dimensional coordinate space for the video, and construct a video cuboid of the video to be processed.

[0036] Among them, such as image 3 As shown, the x-axis and y-axis of the three-dimensional coordinate space are set to be the x-axis and y-axis of the image frame in the video respectively, which are used to represent the length and width of the image frame of the video respectively, and the z-axis of the three-dimensional coordinate space is used to represent the image frame of the video The position of the image frame in the video can be specifically set as the time axis of the video, that is, when the value on the z-axis is k, it represents the image frame...

Embodiment 2

[0083] After the region of interest of the current image frame is determined through the above-mentioned embodiment 1, the important target region can be separated from the background image by extracting the important target region through the above-mentioned steps 103 and 104, and zooming processing is performed respectively. This is described in detail in Embodiment 2 as follows:

[0084] The above-mentioned step S103 can specifically be implemented by using various methods in the prior art. For the above-mentioned step S104, the following specific processing flow is proposed in the embodiment of the present invention, as follows: Figure 5 shown, including:

[0085] Step 501 , repairing the region where the important target region is located in the background image, and obtaining a complete background image after restoration.

[0086]Specifically, according to the texture features of the image around the important target area, the area where the important target area is lo...

Embodiment 3

[0108] Based on the same inventive concept, according to the video image scaling processing methods provided in Embodiments 1 and 2 of the present invention, correspondingly, Embodiment 3 of the present invention also provides a video image scaling processing device, the structural diagram of which is as follows Figure 7 shown, including:

[0109] The first determining unit 701 is configured to be based on the pixels of the current image frame of the video to be processed, the first specified number of image frames before the current image frame, and the second specified number of image frames after the current image frame The importance index value of the point, using the video target tracking algorithm to determine the highest point in the video image cuboid composed of the current image frame, the first image frame of the first specified number and the second image frame of the second specified number Excellent cuboid, wherein, the x-axis and y-axis of the video image cubo...

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Abstract

The invention discloses a method and device of video image zooming processing. The method of the video image zooming processing includes the steps: adopting a video target tracing algorithm to confirm an optimal cuboid from video image cuboids composed of current image frames and a certain number of image frames in front or at the back of the current image frames based on important index values of the current image frames of videos to be processed and a certain number of the image frames in front or at the back of the current image frames, confirming an image area included in the optimal cuboid in the current image frames to be as an interest area of the current image frames, extracting an important target area of the interest area from the current image frames and acquiring a background image of the current image frames after the important target area is extracted, and acquiring current image frames through zooming processing by carrying out the zooming processing on the important target area and the background image respectively. According to the scheme, the video image zooming processing method and device is capable of improving a display effect of key content in the videos through the zooming processing.

Description

technical field [0001] The present invention relates to the technical field of video image processing, in particular to a video image scaling processing method and device. Background technique [0002] In daily life, people often watch videos on smart portable devices such as mobile phones. There are many factors that affect the video playback effect on smart portable devices, such as: screen size, video picture quality, image distortion, frame rate, video fluency, and so on. Moreover, the screen resolutions of various smart portable devices are not uniform at present, and the resolution of videos is not uniform, so the video resolution and the screen resolution often do not match; on the other hand, the screens of smart portable devices are generally larger Small, some video images that are suitable for playing on computers are often reduced, and the key content in the video images is often not displayed clearly. These problems affect the user experience of people watching...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/44G06T3/40
Inventor 初君
Owner CHINA MOBILE COMM GRP CO LTD
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