EDSR (Enhanced Deep Super-Resolution) Matlab port

EDSR (Enhanced Deep Super-Resolution) Single Image Super Resolution Matlab port

EDSR (Enhanced Deep Super-Resolution) Single Image Super Resolution Matlab port.

■ Prerequisites ■

Matlab 2025b

Image Processing toolbox

Statistics and Machine Learning toolbox

Deep Learning Toolbox

Parallel Computing Toolbox

■ How to Test ■

Run EDSR_Test.m that calls EDSR_2xSuperResolution.m

Pre-trained network model/params is loaded on the line 5 of EDSR_2xSuperResolution.m

■ How to Perform EDSR Super-Resolution to your image file ■

Input image MyPicture.jpg should be pristine (not blurred) image. EDSR neural net will upscale the image by 2x.

img = imread("MyPicture.jpg"); % 1024x768 input image

imgSR = EDSR_2xSuperResolution(img);

imwrite(imgSR, "MyPicture_2xEDSR.png"); % 2048x1536 image is outputted

■ How to Train the network using Flickr2K dataset ■

Download Flickr2K dataset and place it on

Flickr2K/Flickr2K_HR subdirectory for train data of 2650 images

Run createTrainingSetAll_Flicker2K.m to create HighRes/LowRes image pair mat files

Run EDSR_Train_Flickr2K.m to train and create EDSR_trained_2x_Flickr2K.mat

rename it to EDSR_trained_2x.mat

■ Difference from original EDSR ■

1. Processes only Y component.

2. Only 2x super resolution is implemented.

■ Changelog ■

Version 20251231 1.0.4

・Fix off-by-one error bug on image crop

・Preprocess to select patch images that contains high frequency component.

・PSNR Comparison uses Bilinear method as rule-based upscaling.

Version 20210307 1.0.3

・Updated EDSR_trained_2x.mat : EDSR 32 ResBlock Flickr2K dataset trained file.

Version 20210228 1.0.2

・Updated EDSR_trained_2x.mat to Flickr2K dataset trained file to improve subjective SR quality.

Version 20210224 1.0.1

・Fix typo.

Version 20210223 1.0.0

・Initial release.

■ References ■

Enhanced Deep Residual Networks for Single Image Super-Resolution

http://openaccess.thecvf.com/content_cvpr_2017_workshops/w12/papers/Lim_Enhanced_Deep_Residual_CVPR_2017_paper.pdf

Keras implementation of EDSR

https://github.com/hieubkset/Keras-Image-Super-Resolution

Single Image Super-Resolution Using Deep Learning

(VDSR is implemented using Matlab Deep Learning Toolbox)

https://www.mathworks.com/help/images/single-image-super-resolution-using-deep-learning.html