OpenCV code for single image super-resolution

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That's not single-image super-resolution.

Unfortunately, there isn't any good single-image code available. The best is probably the SRCNN model, but it's a lot of work to get that running. There are a couple of versions available online with different amounts of training and formats.

OpenCV includes the library for super-resolution; however, there is no sample code available regarding how to apply this library for our applications.

"low resolution images" super-resolution module works with two images. resize works with one image. Now may be you want "Image Super-Resolution Using Deep Convolutional Networks" You need only one image but you need to know a context.. I don't think there is a module using this technique.

Relevant links from above:

• SRCNN, Image Super-Resolution Using Deep Convolutional Networks (2015)
• Neural Enhance
• srez
• etc.