Bifocal camera digital zooming method based on band repair and super-resolution

Abstract

The invention discloses a bifocal camera digital zooming method based on band repair and super-resolution, comprising the following steps of: reconstructing different frequency band components througha single-frame image super-resolution algorithm by using an image obtained by a low-resolution camera to obtain a super-resolution image matching the image spatial sampling rate acquired by a high-resolution camera, and performing registration operation with the image obtained by the high-resolution camera; extracting the super-resolution algorithm by combining the image obtained by the high-resolution camera and using the super-resolution image and registration information obtained by the low-resolution camera to reconstruct an area of unqualified accuracy as a reconstruction area on each frequency band; extracting an area corresponding to the reconstruction area in the image obtained by the high-resolution camera, and respectively constructing samples for band restoration for each extraction area. The method provided by the invention is capable of realizing digital zoom image synthesis with continuous zoom ratio by using a limited number of super-resolution imaging models, and effectively using rich texture details provided by a telephoto camera.

Description

technical field [0001] The invention relates to a bifocal imaging system and a computer image processing calculation, in particular to a bifocal camera digital zoom method based on frequency band restoration and super-resolution imaging. Background technique [0002] Digital cameras have gradually become the standard equipment on mass-produced smart phones. The industry has designed a large number of software programs based on these digital cameras. high demands. However, because mobile phones have relatively high requirements on the power consumption, volume, and cost of the devices mounted on them, it is rare to use optical zoom cameras on mobile phones. Instead, a dual-focus camera system is used: using two lenses with different focal lengths The fixed-focus camera forms an asymmetric optical system to simulate an optical zoom camera to achieve various functions such as background blur. [0003] When using a dual-focus camera system, a new problem will inevitably be int...

AI Technical Summary

Problems solved by technology

The traditional image fusion algorithm cannot transfer the texture information obtained by the high-resolution camera to other areas of the image obtained by the wide-angle camera outside the field of view of the telephoto camera, and the super-resolution algorithm that has been extensively researched can only limitedly improve the image obtained by the wide-angle camera. The quality of the telephoto camera cannot effectively utilize the large amount of detailed information obtained by the telephoto camera, and it can only zoom with a fixed magnification

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