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Image/video quality enhancement and super-resolution using sparse transformations

A super-resolution and quality enhancement technology, applied in the field of enhancing the quality of image/video signals and improving the spatial resolution of image/video signals, which can solve the problems of high complexity and high cost

Active Publication Date: 2013-03-13
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this technique is limited to block variations with various simplifications that don't work with sloped edges and textures, and involves many iterations of the basic method to get good quality, making the complexity prohibitively expensive

Method used

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  • Image/video quality enhancement and super-resolution using sparse transformations
  • Image/video quality enhancement and super-resolution using sparse transformations
  • Image/video quality enhancement and super-resolution using sparse transformations

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Embodiment Construction

[0023] Describes enhancement techniques that enhance the quality of video and / or images. In one embodiment, the technique also functions as a super-resolution technique that generates high-resolution images and / or videos corresponding to low-resolution input images and / or videos, respectively. In one embodiment, this is accomplished by adding multiple pixel positions for each pixel position in low resolution and / or video. For the purposes of this paper, the added pixel locations are known as the interpolated locations, and the locations from the low-resolution image are known as the original locations.

[0024] In the following description, numerous details are set forth in order to more fully explain the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form rather than in detail in order to avoid obscu...

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Abstract

A method and apparatus is disclosed herein for a quality enhancement / super resolution technique. In one embodiment, the method comprises receiving a first version of media at a first resolution and creating a second version of the media at a second resolution higher or equal to the first resolution using at least one transform and adaptive thresholding.

Description

technical field [0001] The present invention generally relates to image / video signal processing. More specifically, the present invention relates to enhancing the quality of image / video signals, and / or increasing the spatial resolution of image / video signals. Background technique [0002] Image and video signal processing is widely used in many applications today. Often an image or video of a particular resolution is desired, yet only a lower resolution image or video is available. In this case, various methods are used to create a higher resolution image from a lower resolution version of the image. These existing methods include applying linear or simple non-linear interpolation filters to lower resolution images or videos. [0003] Examples of the use of linear or non-linear interpolation filters include bilinear interpolation filters such as described in Gonzalez & Woods, "Digital Image Processing" (Pearson Education (Second Edition)); in ITU-T Recommendation H.264 & ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40
CPCG06T3/4084
Inventor S・卡纽姆里O・G・居莱尔于茨R・吉万拉尔
Owner NTT DOCOMO INC