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Fine-grained scale image super-resolution method based on non-local enhancement network

A network enhancement and super-resolution technology, which is applied in graphics and image conversion, image data processing, instruments, etc., can solve problems such as low computing efficiency, and achieve the effects of reducing the impact of artifacts, high super-resolution performance, and high practical value

Active Publication Date: 2022-03-22
FUZHOU UNIV
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Problems solved by technology

If a specific model is trained for each positive fine-grained scale factor, it is impossible to store models separately for all fine-grained scale factors in the limited memory space, and it is computationally inefficient

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  • Fine-grained scale image super-resolution method based on non-local enhancement network
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  • Fine-grained scale image super-resolution method based on non-local enhancement network

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Embodiment Construction

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0052] The present invention provides a fine-grained scale image super-resolution method based on non-local enhancement network, such as figure 1 shown, including the following steps:

[0053] Step A: Preprocessing the original high-resolution training image to obtain an image block pair dataset composed of low-quality high-resolution image blocks of different scales and the original high-resolution training image block, specifically including the following steps:

[0054] Step A1: Perform fine-grained downsampling preprocessing on the high-resolution training image to obtain low-resolution images of different scales. The range of the scale factor is (1, 4], and the value interval is 0.1;

[0055] Step A2: Perform preliminary super-resolution reconstruction on the low-resolution image using the bicubic interpolation method to obtain ...

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Abstract

The present invention relates to a fine-grained scale image super-resolution method based on a non-local enhancement network. The method includes the following steps: Step A: Preprocessing the original high-resolution training image to obtain low-quality high-resolution images of different scales A dataset of image patch pairs consisting of image patches and original high-resolution training image patches; Step B: Use the image patch dataset to train a non-locally enhanced deep network; Step C: Input high-resolution images of low-quality test images into A deep network is used for reconstruction to obtain super-resolution results. This method uses a non-locally enhanced deep residual structure. By combining non-local operations with ordinary convolutions, it can effectively capture and utilize local and non-local image attributes for image super-resolution. Compared with existing super-resolution models, This method can significantly improve the performance of image super-resolution on fine-grained scales.

Description

technical field [0001] The invention relates to the fields of image and video processing and computer vision, in particular to a fine-grained scale image super-resolution method based on a non-local enhancement network. Background technique [0002] Image super-resolution is an important topic in digital image processing. In practical application scenarios, limited by the cost of image acquisition equipment, image transmission bandwidth, or the technical bottleneck of the imaging model itself, the quality of the obtained image is often affected, and it cannot become a large-scale high-definition image with sharp edges and no blocky blur . The single-frame image super-resolution algorithm tries to reconstruct a high-resolution image from a low-resolution image without introducing blur, and has been widely used in security monitoring, medical imaging, and satellite aerial images. [0003] Interpolation-based methods proposed earlier can solve the super-resolution problem at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40G06T3/60
CPCG06T3/4053G06T3/60G06T3/4046
Inventor 牛玉贞黄江艺翁涵梅
Owner FUZHOU UNIV
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