Image super-resolution restoration method and device, computer equipment and storage medium

The invention relates to the technical field of image processing, and provides an image super-resolution restoration method and device, computer equipment and a storage medium. The method comprises the following steps: inputting a low-resolution image sample into a generator to obtain a super-resolution image; inputting the super-resolution image and the high-resolution image sample into a binary basis filter and a learnable filter to obtain a first low-frequency feature band and a first high-frequency feature band of the super-resolution image and a second low-frequency feature band and a second high-frequency feature band of the high-resolution image sample; obtaining first low-frequency information and first high-frequency information of the super-resolution image and second low-frequency information and second high-frequency information of the high-resolution image sample; and according to the super-resolution image, the high-resolution image sample and the high and low frequency information, reconstructi