Method and device for driving pan-tilt-zoom (PTZ) to generate spliced image

A technology for splicing images and images, applied in the field of image processing, can solve the problems of low splicing efficiency, long time-consuming, and large manpower, and achieve the effects of low splicing efficiency, shortened time-consuming, and saving human resources

Active Publication Date: 2016-02-24
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

[0005] Especially for the splicing of multiple camera images, it takes a long time to adjust the angle of the dome ca

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  • Method and device for driving pan-tilt-zoom (PTZ) to generate spliced image
  • Method and device for driving pan-tilt-zoom (PTZ) to generate spliced image
  • Method and device for driving pan-tilt-zoom (PTZ) to generate spliced image

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[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to embodiments and drawings.

[0026] The present invention pre-establishes the mapping relationship between the image coordinates of the first dome camera and the ground coordinates of the second dome camera. The ground coordinates of the second dome camera are when the image coordinates of the first dome camera are taken as the center of the second dome camera. The ground coordinates after rotation; and then, if an image stitching request containing a coincidence ratio is received, the first PTZ coordinates that the second dome needs to rotate are determined based on the mapping relationship, and the coordinates are sent to the second dome to make it rotate; In order to automatically control the rotation of the ball machine.

[0027] See figure 1 , Is a schematic flow chart of the method for dri...

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Abstract

The invention discloses a method and a device for driving a PTZ to generate a spliced image. The method includes the following steps: establishing a mapping relationship between first dome camera image coordinates and second dome camera ground coordinates; receiving an image splicing request containing a coincidence proportion; determining a second dome camera center coordinate meeting the coincidence proportion request in the first dome camera image coordinate; acquiring the second dome camera ground coordinate corresponding to the second dome camera center coordinate according to the mapping relationship; converting the acquired second dome camera ground coordinate into a PTZ coordinate, and expressing the PTZ coordinate as a first PTZ coordinate; sending a self-calibration instruction containing the first PTZ coordinate to a second dome camera to notify the second dome camera to rotate according to the first PTZ coordinate; and receiving images from a first dome camera and the second dome camera, and splicing the images. According to the invention, the PTZ can be driven to automatically generate the spliced image, and the splicing efficiency is improved.

Description

technical field [0001] The invention relates to image processing technology, in particular to a method and a device for driving a pan-tilt to generate a mosaic image. Background technique [0002] Stitching images refers to the use of image stitching algorithms to combine the source images of two or more cameras into one image. [0003] Taking the stitching of two camera images into a horizontal image as an example, the previous image stitching schemes required that the centers of the two camera images be close to each other and basically be kept on the same horizontal line, and at the same time require the overlapping area of ​​the two images to meet the requirements, for example, within 20% to 30% %about. Similarly, if two camera images are spliced ​​into a vertical image, it is generally required that the centers of the two camera images are close to each other and on the same vertical line, while satisfying the requirements of image overlapping areas. [0004] The came...

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Application Information

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IPC IPC(8): G06T7/00G06T5/50G06T3/40
Inventor 王超施行任烨全晓臣郭斌蔡巍伟浦世亮
Owner HANGZHOU HIKVISION DIGITAL TECH
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