Picture renewing method based on resolution improvement

A resolution and low-resolution technology, applied in the field of photo renovation based on resolution enhancement, can solve the problems of "mosaic" effect, unsuitable photo renovation, unsatisfactory quality, etc.

Active Publication Date: 2016-07-27
HARBIN SUPER RESOLUTION FX TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The interpolation algorithm is simple and fast, but it is prone to "mosaic" effect or over-smoothing phenomenon, especially when the magnification is large
When the resolution of the photo is low, the quality of the zoom-in based on interpolation is not satisfactory
Therefore, existing interpolation-based methods are not suitable for photo refurbishment

Method used

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  • Picture renewing method based on resolution improvement
  • Picture renewing method based on resolution improvement
  • Picture renewing method based on resolution improvement

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Embodiment Construction

[0059] In the following specific embodiments, an example is used to illustrate the method of the present invention.

[0060] The specific implementation steps for upgrading a photo with a resolution of 1280*960 to a resolution of 2560*1920 are as follows:

[0061] (1) Preprocessing training photos

[0062] (1.1) Choose any 90-100 high-resolution photos. In this embodiment, 100 high-resolution photos are selected, and these photos are convoluted using a Gaussian kernel with a mean value of 0 and a standard deviation of 1;

[0063] (1.2) Obtain the original low-resolution photo resolution and the target resolution, and calculate the magnification based on the two. The original resolution is 1280*960, the target resolution is 2560*1920, and the magnification factor is: 2560 / 1280=2. Accordingly, the convolved photo is down-sampled to 1 / 2 of the original size to obtain the corresponding low-resolution photo.

[0064] (1.3) Divide each obtained low-resolution photo into non-over...

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Abstract

The invention brings forward a picture renewing method based on resolution improvement, and is applied to pictures with quite low resolution and quite low sharpness. First of all, pictures are preprocessed and trained, secondly, a mapping relation model based on a hybrid expert model is obtained, next, low-resolution pictures to be processed are segmented to blocks, and finally, according to the mapping relation model, the low-resolution pictures are improved to high-resolution pictures. The method provided by the invention has the advantages of good adaptability, fast speed, good effect, high expansibility and the like.

Description

technical field [0001] The invention belongs to the field of computer vision and image processing, and relates to a method for refurbishing photos, in particular to a method for refurbishing photos based on resolution enhancement. Background technique [0002] With the development of image acquisition, transmission, storage, and display technologies, people have entered the digital age from the film age. Digital photos are easier to save, transfer, and post-process. This makes people have higher and higher requirements for appreciation of photos, constantly pursuing higher resolution and higher visual effects. [0003] On the other hand, many old photos still have low resolution, low clarity, and poor visual effects due to technical limitations. At the same time, due to the age, the photos have been stored for a long time, and the damage of various external factors has caused various quality degradations. On the one hand, people want to miss the past photos, and on the ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T7/00
CPCG06T3/4038G06T3/4076G06T2207/20012
Inventor 左旺孟赵秋实张宏志石坚张垒磊
Owner HARBIN SUPER RESOLUTION FX TECH CO LTD
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