Image coding method and device, decoding method and device based on super-resolution technology
A super-resolution technology and image coding technology, applied in the fields of image coding and device, decoding and device based on super-resolution technology, can solve the problems of inability to further reduce the bit rate, poor decoded image quality, and no disclosure of super-resolution reconstruction, To achieve the effect of improving the quality of the reconstructed image and strengthening the generalization ability
Active Publication Date: 2021-05-25
COMMUNICATION UNIVERSITY OF CHINA
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However, there is no method disclosed in the prior art for super-resolution reconstruction for image compression
[0008] Traditional image coding is mainly to perform block transformation, quantization, entropy coding, etc. on the image. These methods perform various operations on the same resolution dimension as the original image, which leads to the inability to further reduce the code rate, or in other words, the code rate cannot be further reduced. When the rate is low, the decoded image quality is very poor
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[0027] The present invention will be described in further detail below with reference to the accompanying drawings, so as to make the present invention clearer and easier to understand. Those skilled in the art would recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Also, in this specification, the drawings are not drawn to scale, and like reference numerals denote like parts.
[0028] Combine below Figure 1-Figure 3 Embodiments of the present invention will be described in detail.
[0029] The invention discloses an image coding device based on super-resolution technology, which is located at the sending end of the image. The image coding device includes: a down-sampling module for down-sampling the original image; a first compression module for do...
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The invention discloses an image coding method and device, a decoding method and a device based on super-resolution technology. The image coding device is located at the sending end of the image, including: a downsampling module, which downsamples the original image; a first compression module, which compresses the downsampled image for the first time; a neural network, which compresses the image after the first compression Perform super-resolution reconstruction to obtain the first reconstructed image; the first addition module subtracts the original image from the first reconstructed image to obtain the first residual image; and the second compression module performs the first The residual image is compressed for the second time; and the sending module sends the compressed first residual image and the first compressed image to the receiving end of the image. The present invention greatly reduces the code rate, and at the same time, the application of deep learning technology can also greatly improve the quality of the reconstructed image.
Description
technical field [0001] The present invention relates to an image encoding method and device based on super-resolution technology, and a decoding method and device. Background technique [0002] An image is an approximate and vivid representation of an objective object, and it contains a great deal of relevant information about the object. Statistics show that roughly three-quarters of the information a person obtains comes from vision. It can be said that images are an important source of information for people. Especially in recent years, the rapid development of Internet technology, especially mobile Internet technology, has brought subversive changes and innovations in fields closely related to people's lives, including entertainment and education. In order to deliver a better user experience, an endless stream of various applications are striving to visualize all results to satisfy people's visual experience, including live broadcast, social, media and other fields. I...
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IPC IPC(8): H04N19/132H04N19/59H04N19/44H04N19/625H04N19/63
CPCH04N19/132H04N19/44H04N19/59H04N19/625H04N19/63
Inventor 叶龙张胜前钟微帖云张勤
Owner COMMUNICATION UNIVERSITY OF CHINA