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Image reconstruction method and device

An image reconstruction and image technology, applied in the field of image processing, can solve problems such as poor picture effect, errors, and little guiding significance of local information, and achieve the effect of improving clarity

Active Publication Date: 2021-12-03
HANGZHOU EZVIZ SOFTWARE CO LTD
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Problems solved by technology

This method is more suitable for scenes where the overlapping area of ​​the short-focus image and the telephoto image are relatively close to other areas. However, if there are major differences in each part of the image, the guiding significance of the local information is not great, and it may even cause errors, resulting in The picture effect is worse

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  • Image reconstruction method and device
  • Image reconstruction method and device

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] For the convenience of understanding, the following explanations are first given:

[0044] Focal length: refers to the distance from the center of the lens to the focal point where the light gathers. Generally, it is called telephoto if it is above 6mm (millimeters), and it is called short focal length if it is below 6mm.

[0045] Infinite rotation: There is no limit, and it can always rotate in the specified direction.

[0046] Image splicing and fusion refers to combining two images with common parts into one to expand the field of view or improve clarity. For example: in the monitoring scene of binocular long-focus pan-tilt camera, according to the common part of the long-focus image and the short-focus image, replace the common part of the two in the short-focus image with the long-focus image, so as to utilize the field o...

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Abstract

Embodiments of the present invention provide an image reconstruction method and device. The method includes: when the acquisition condition of the telephoto image set is satisfied, the pan / tilt of the binocular telephoto pan / tilt camera is driven to rotate within the entire field of view, and a frame of telephoto image is acquired at every preset horizontal or / and vertical angle, and the All telephoto images acquired within the entire field of view constitute a first telephoto image set; upon receiving a zoom request, interpolation processing is performed on the first short-focus image currently collected to obtain a second short-focus image that meets the zoom request; Each frame of the telephoto image in the first telephoto image set is down-sampled to obtain the second telephoto image set; the second short-focus image is divided into blocks, respectively for each block in all the second telephoto image sets A matching block is searched in the telephoto image; each sub-block in the second short-focus image is fused with a matching block of the sub-block to obtain a short-focus reconstructed image. The embodiment of the present invention not only retains the advantage of the large field of view of the short-focus image, but also improves the definition.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image reconstruction method and device. Background technique [0002] Due to the large field of view of the short-focus camera and the small field of view of the telephoto camera, when images are collected with the same specification image sensor, the definition of the long-focus image is high and the definition of the short-focus image is low. In order to fuse two focal length images to achieve a zoom effect, it is necessary to use a software method to improve the spatial resolution of the image, that is, a super-resolution algorithm. [0003] Super-resolution refers to the reconstruction of low-resolution images into corresponding high-resolution images. Existing super-resolution algorithms generally include single-frame super-resolution algorithms and super-resolution algorithms for reference high-definition images. The single-frame super-resolution algor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
CPCH04N23/67H04N23/695H04N23/698H04N23/90H04N23/69H04N23/45H04N23/951H04N5/265G06T3/4038G06T7/11G06V10/761G06T3/4007G06T5/50G06T2207/20221G06T2207/20224
Inventor 杜斌马士杰杨志翔
Owner HANGZHOU EZVIZ SOFTWARE CO LTD
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