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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 errors, poor picture effects, and little guiding significance of local information

Active Publication Date: 2020-10-23
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

The embodiment of the invention provides an image reconstruction method and device. The method comprises the following steps: when a long-focus image set acquisition condition is satisfied, driving apan-tilt of a binocular long-focus and short-focus pan-tilt camera to rotate in a whole view field range, acquiring a frame of long-focus image every other preset horizontal or / and vertical angle, andforming a first long-focus image set by using all the long-focus images acquired in the whole view field range; receiving a zooming request, and performing interpolation processing on the currently acquired first short-focus image to obtain a second short-focus image conforming to the zooming request; downsampling each frame of long-focus image in the first long-focus image set to obtain a secondlong-focus image set; partitioning the second short-focus image, and searching matching blocks in all long-focus images of a second long-focus image set for each partition; and fusing each block in the second short-focus image with the matching block of the block to obtain a short-focus reconstructed image. According to the embodiment of the invention, the advantage of a large field of view of ashort-focus image is reserved, and the definition is improved.

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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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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