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Image enhancement apparatus and method

一种图像增强、图像处理装置的技术，应用在图像增强、图像分析、图像数据处理等方向，能够解决大量输入帧、高计算负荷等问题，达到增大分辨率、防止过度增强、防止副作用的效果

Inactive Publication Date: 2012-08-29
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Maximum A Posteriori (MAP) super-resolution has additional image modeling, but otherwise has strong similarities to backprojection
So the disadvantage is the same, requiring a large number of input frames and requiring high computational load due to the large number of iterations for each frame

Method used

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  • Image enhancement apparatus and method
  • Image enhancement apparatus and method

Examples

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Embodiment Construction

[0050] figure 1 The general layout of the image enhancement device 100 according to the present invention is schematically illustrated. Adaptive spatio-temporal image enhancement is performed on an input image sequence 1 of input images 1a, 1b... to obtain an output image sequence 3 of enhanced output images 3a, 3b..., preferably using motion vector information 2 obtained, for example, from a previous motion estimation. , where the indices a, b, ... indicate the temporal order of the individual images. The output images 3a, 3b... may be enhanced in a way to have higher resolution, higher SNR, less artifacts and / or less noise than the respective input images 1a, 1b.... The motion vector information preferably includes motion vectors describing the motion of each pixel in the x (horizontal) and y (vertical) directions.

[0051] figure 2 A first embodiment of an image enhancement device 100a according to the invention is shown, illustrating more details of the general concept...

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Abstract

The present invention relates to an image enhancement apparatus and method. To provide the ability to increase an input image (1b) of an input image sequence (1) and to obtain an increased input image (3b), the image enhancement apparatus (100) comprises a motion compensation unit (20) configured to generate at least one front motion compensation image (4a), a weighted selection unit (30) configured to generate a weighted selection, a feature analysis unit (40) configured to generate characteristic information (6,6 '), an image model unit (50) configured to generate a modelled image (7), a spatio-temporal detail signal generation unit (60) configured to generate a detail signal (8), and a combination unit (70) configured to generate said enhanced output image from said input image.

Description

technical field [0001] The invention relates to an image enhancement device and a corresponding method for enhancing an input image in a sequence of input images and obtaining an enhanced output image. Furthermore, the present invention relates to a display device, a computer program and a computer-readable non-transitory medium. Background technique [0002] Super-resolution can enhance the resolution in images and video sequences. A particular feature of super-resolution is its ability to create high-resolution frames with high spatial frequencies that are not present in each low-resolution input frame. [0003] There are several possible strategies that can be used to increase the (overall) resolution of each image as follows: (a) Add a synthetic detail signal to e.g. sharpen edges (LTI, see e.g. H. Schroder, H. Elsler and M. Fritsch, "Nonlinear Picture Enhancement Techniques for Vertically Interpolated TV-Signals", EUSIPCO Conf.Proceedings (EUSIPCO Conference Collectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T5/50G06T2207/20182G06T2207/20192G06T3/4053G06T5/73
Inventor 保罗·斯普林格西彻马丁·里克特麦特瑟斯·布鲁格玛尼
Owner SONY CORP
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