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Super-resolution reconstruction method and apparatus for image

A technology for super-resolution reconstruction and low-resolution images, which is applied in the field of image processing and can solve the problems of large algorithm complexity and long algorithm operation time.

Active Publication Date: 2015-11-11
SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for image super-resolution reconstruction to solve the problems of relatively high algorithm complexity and long algorithm operation time when performing image reconstruction in the prior art

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  • Super-resolution reconstruction method and apparatus for image

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[0057] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0058] figure 1 The implementation process of the image super-resolution reconstruction method provided by the embodiment of the present invention is described in detail as follows:

[0059] In step S101, multiple low-resolution images are acquired, and image registration is performed on the multiple low-resolution images to obtain a registered image sequence.

[0060] Specifically, in general, images obtained by different sensors or the same sensor at different times and different viewpoints generally have spatial differences. Therefore, image registration processing is required before image fusi...

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Abstract

The present invention provides a super-resolution reconstruction method for an image. The super-resolution reconstruction method comprises: acquiring a plurality of low-resolution images and performing image registration; performing non-sampling morphological wavelet decomposition on each image in a registered image sequence to obtain corresponding low-frequency coefficient sequence and high-frequency coefficient sequence; performing interpolation on the low-frequency coefficient sequence and the high-frequency coefficient sequence separately, and fusing the amplified low-frequency coefficient sequence and the amplified high-frequency coefficient sequence to obtain a fused coefficient; and performing non-sampling morphological wavelet inverse transformation on the fused coefficient to obtain a reconstructed image. With the adoption of the reconstruction method, the scale invariance and the multidirectional property can be kept, a reconstruction calculation process is simple, and the quality of the reconstructed image is better.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to an image super-resolution reconstruction method and device. Background technique [0002] Image resolution refers to the ability to express objects of different sizes, especially for smaller objects, which intuitively reflects important features such as image clarity and quality. High-resolution images mean that more detailed information can be obtained, so that problems can be better handled, but in the process of digital image acquisition and processing, many factors affect the improvement of image resolution. [0003] Image super-resolution reconstruction takes one or more low-resolution images as the research object, and comprehensively studies the information contained in the known low-resolution images to obtain a clearer description of the actual scene. resolution image. Super-resolution image reconstruction is currently an effective method to improve image resolution. It...

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Application Information

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IPC IPC(8): G06T3/40
CPCG06T3/4076
Inventor 柳伟陈增兵张基宏梁永生
Owner SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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