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Image stabilization method and device

An imaging device and image stabilization technology, applied in the field of image processing, can solve problems such as unstable video images, and achieve the effect of improving user experience

Active Publication Date: 2019-03-01
HANGZHOU GEXIANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, an embodiment of the present invention provides an image stabilization method and device to solve the problem of unstable video images

Method used

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  • Image stabilization method and device

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Experimental program
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Embodiment 1

[0023] figure 1 It is a flow chart of the image stabilization method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where an imaging device is used to shoot video. The method can be executed by an image stabilization device, which can be realized by software / hardware and can integrated in the imaging device.

[0024] see figure 1 , the image stabilization method includes:

[0025] S110. Obtain motion data when the imaging device shoots through a three-axis gyroscope built in the imaging device.

[0026] When an imaging device is used to shoot a video, since the movement of the imaging device includes a large amount of random jitter during the shooting process, the image of the video image shakes. Since generally the captured object is far away from the imaging device, the main video shake is caused by the rotational movement of the imaging device, so in this embodiment, the motion data is the rotation angle. A three-axis g...

Embodiment 2

[0050] image 3 It is a schematic flowchart of the image stabilization method provided by Embodiment 2 of the present invention. This embodiment is optimized on the basis of the above-mentioned embodiments. In this embodiment, after the image points in the image are reversely compensated according to the stable motion data, after the image is shaken, the following steps are added: The image points in the compensated image are subjected to bilinear interpolation, and the values ​​after bilinear interpolation are used as the pixel values ​​of the image points.

[0051] Correspondingly, the image stabilization method provided in this embodiment specifically includes:

[0052] S210. Obtain motion data when the imaging device shoots through a three-axis gyroscope built in the imaging device.

[0053] S220. Perform denoising processing on the motion data.

[0054] S230, reversely compensate the image points in the image according to the motion data after denoising processing, and...

Embodiment 3

[0059] Figure 4 It is a schematic flowchart of the image stabilization method provided by Embodiment 3 of the present invention. This embodiment is optimized on the basis of the above-mentioned embodiments. In this embodiment, before the motion data of the imaging device is acquired through the three-axis gyroscope built in the imaging device, the following steps are added: The optimal imaging matrix parameters, the imaging matrix parameters include: the focal length of the imaging device and the intersection point of the optical axis of the imaging device and the image plane; The specific optimization of the reverse compensation is as follows: performing reverse compensation on the pixels in the image according to the motion data after denoising processing and the optimal imaging matrix parameters.

[0060] Correspondingly, the image stabilization method provided in this embodiment specifically includes:

[0061] S310. Calculate optimal imaging matrix parameters of the ima...

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Abstract

The invention discloses a method and device for image stabilization. The method includes: acquiring motion data when the imaging device shoots through a three-axis gyroscope built in the imaging device; performing denoising processing on the motion data; The noise-processed motion data is used to reversely compensate the image points in the image to remove the image shake. In the image stabilization method and device provided by the embodiments of the present invention, the motion data during shooting by the imaging device is acquired through the three-axis gyroscope built in the imaging device, and the current image is reversely compensated according to the motion data. When there is no need to add additional hardware and the shooting image is not good, it can realize the image stabilization processing of the video. Improved user experience.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image stabilization method and device. Background technique [0002] With the rapid development of electronic technology, users can shoot videos through mobile terminals, such as mobile phones, tablet computers, digital cameras and handheld cameras, etc. However, during the shooting process, factors such as shooting skills and shooting environment may It will cause the shooting equipment to shake, and then make the video captured by the video unstable, which will affect the normal viewing of the user. Therefore, it is necessary to perform image stabilization processing on this type of video. [0003] In the prior art, hardware solutions can be used to achieve video image stabilization. Generally, the technical solution of adding a physically stabilized pan / tilt to the shooting equipment is used to achieve the technical effect of compensating for camera shake i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N5/217
CPCH04N23/81H04N23/6812
Inventor 王鼎谢衍涛
Owner HANGZHOU GEXIANG TECH CO LTD
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