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A zoom correction method and device

A correction method and equipment technology, which is applied in the field of image processing, can solve problems such as long time, target loss, and low efficiency, and achieve the effect of avoiding multiple zooming and improving zooming efficiency

Active Publication Date: 2017-05-17
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this zooming method based on the magnification limit takes a long time and is inefficient, and cannot meet the needs of some applications that need to quickly locate the target object. A long zooming time will easily lead to the loss of the target during the zooming process.

Method used

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  • A zoom correction method and device
  • A zoom correction method and device

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Embodiment Construction

[0028] The magnification correction method provided by the embodiment of the present invention is used to correct the phenomenon of magnification deviation that occurs during the magnification process, see figure 1 , which shows the principle of zoom deviation. When zooming a target object in the image, the movement lens group in the camera device will move relative to each other. Ideally, the optical axis of the lens group will not With the movement of the lens group, it is always maintained on a straight line, such as a straight line a, so that the center point in the image will still be at the center after the image is enlarged; however, due to the manufacturing process of the lens group, Usually, the optical axis of each lens 11 in the lens group will deviate during the zooming process, for example figure 1 In , the optical axis will change from line a to line b, which will cause the object in the center of the image to be off-center during the zoom process. See for examp...

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Abstract

The invention provides a zooming correcting method and device. The method comprises the steps that the zooming power of zooming of a target object in an image is acquired; a zooming compensation table is checked, and an angle compensation value corresponding to the zooming power is obtained; according to the angle compensation value, an angle compensation mechanism is subjected to zooming compensation, and the target object is made to be placed in the preset position in the image after zooming. The zooming correcting method and device obviously improve the zooming efficiency.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a zoom correction method and equipment. Background technique [0002] Zooming is one of the application aspects in the process of image capture by the camera device, which refers to the process of gradually zooming in on the viewfinder of the camera device. At present, in the process of zooming, zooming error will easily occur. This zooming bias refers to, for example, the object in the image that was originally at the center of the image. The position of the center point is gradually shifted to the position of the periphery of the image. In the process of using the camera equipment to zoom in, the user can often experience the phenomenon of zoom deviation mentioned above. For example, when the user wants to zoom in on the vehicle in the center of the image to see its license plate number clearly, the vehicle will not be visible after zooming in. No longer in the center of the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00H04N5/232
CPCG06T7/80
Inventor 潘胜军
Owner ZHEJIANG UNIVIEW TECH CO LTD
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