Superposition method of two paths of videos
A video and lens technology, which is applied in the field of two-way video overlap, can solve the problems that cannot be superimposed and displayed, and the optical paths do not overlap, etc., and achieve a good effect of image synthesis
Active Publication Date: 2017-01-11
山东惠工电气股份有限公司
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[0003] The purpose of the present invention is to solve the defect that the images taken by two cameras on the same scene cannot be superimposed and displayed due to the misalignment of the optical paths in the current image monitoring. The shooting distance is measured by the method, and then the offset of the captured image is calculated according to the determined offset of the optical axis of different camera lenses and the focal length data of the lens to complete the image superposition process
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[0023] Such as figure 1 Shown: Grayscale processing is performed on the images captured by the two cameras, and the image is searched in blocks using the gray histogram distribution characteristics of the target area, and the corresponding image center points A and B in the two images are obtained, and each Coordinate data of four corner points of an image;
[0024] Such as figure 2 Shown: After simply combining image 1 and image 2, it will be found that point A and point B cannot coincide.
[0025] Such as image 3 Shown: Using translation changes, point A of image 1 and point B of image 2 are brought together. At this time, with the assistance of laser ranging, the offset of the optical axis of the two cameras and the focal length data of the lens are respectively obtained for each The coordinate data of the four corner points after the image convergence;
[0026] f1(x), f1'(x), f2(x), f2'(x), f3(x), f3'(x), f4(x), f4'(x)
[0027] is the image offset
[0028] Accordin...
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The invention specifically relates to a superposition method of two paths of videos, applied to image monitoring. The superposition method is characterized by comprising the following steps: 1) acquiring corresponding image center points in two images and coordinate offset data of four corner points of each image; 2) carrying out translation transformation on the two images to gather the image center points thereof together, and respectively acquiring the coordinate data of the four corner points of each gathered image; 3) fitting a curvilinear equation, and generating matrix data; and 4) using the acquired curvilinear equation to calculate the offsets of the images, generating the matrix data, and processing the images shot by two paths of cameras in real time to gather the images into a path of video. The superposition method provided by the invention has the advantages of good image synthesis effect.
Description
technical field [0001] The invention specifically relates to a two-way video overlap method applied to image monitoring. Background technique [0002] In actual image monitoring applications, it is often encountered that two or more cameras that are very close to each other shoot the same scene and then need to superimpose the two images for display. Because the optical paths of the lenses of the two cameras do not overlap, the captured images will not be exactly the same: the same object in the scene has an offset related to the shooting distance in the image field of each camera. Since the offset varies with the shooting distance, it is impossible to complete the coincidence by simple image translation. In the existing technology, the computer can analyze the content of the captured images to find out the same or similar characteristic parts of the same frame of images to complete the overlap. However, when the images captured by different cameras are images of different...
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IPC IPC(8): H04N7/18H04N5/265G06T7/00
Inventor 孙伟訾宁孙学锋
Owner 山东惠工电气股份有限公司