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Image and video super-resolution method and device

A super-resolution and low-resolution image technology, applied in the field of image and video super-resolution methods and devices, can solve the problems of unstable reverse derivation model, easy to be interfered by noise, etc., achieve robust operation effect, stable and fast solution , the practical effect of the model

Active Publication Date: 2019-10-18
PEKING UNIV
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Problems solved by technology

Since the process of restoring a high-resolution image from a low-resolution image is an ill-posed inverse problem, that is, the reverse derivation model is unstable and is easily disturbed by noise to obtain very poor results.

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  • Image and video super-resolution method and device
  • Image and video super-resolution method and device
  • Image and video super-resolution method and device

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Embodiment Construction

[0062] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the specific The examples are only used to explain the present invention, not to limit the present invention. The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] figure 1 is a flowchart of the image video super-resolution method. like figure 1 Shown, the image video super-resolution method comprises the following steps: input step (S1), input low-resolution image; Super-resolution step, c...

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Abstract

The invention discloses an image and video super-resolution method and device. The method includes the following steps: an input step, inputting a low-resolution image; a super-resolution step, including interpolation and deblurring, interpolating the low-resolution image, and deblurring the interpolated image through a super-resolution model constrained by weighted total variation regularization; and an output step to output a high-resolution image. This method uses a weighted total variation regularization model, which makes the curve of the model closer to the real first-order difference statistical results of natural images. It improves the original phenomenon that some approximation priors cause the optimization equation to be non-convex, making the equation The solution is more stable and faster. In addition, a fast solution method is designed for the model to make the model more practical. At the same time, the method is made more robust through excessive de-blurring control.

Description

technical field [0001] The invention belongs to the technical field of video image processing, and in particular relates to an image video super-resolution method and device. Background technique [0002] Image super-resolution refers to a class of methods that use a computer to enlarge a low-resolution image into a high-resolution image, and estimate the image information that needs to be supplemented during the enlargement process. [0003] Video super-resolution is divided into two categories. One is to reconstruct a key frame from a video by using the information of multiple frames, which has many applications in monitoring. The other type refers to amplifying each frame of the video to generate a high-resolution video, which is mainly used in the field of video broadcasting. [0004] The use of digital image generating equipment (digital cameras, digital video cameras, etc.) has become more and more popular, which also makes digital images more and more widely used. W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40G06T5/00
CPCG06T3/4053G06T2207/10016G06T5/73
Inventor 杨长水柏园超贾惠柱解晓东陈瑞
Owner PEKING UNIV