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Image processing apparatus and method

A technology of image processing device and processing circuit, which is applied in the field of image processing and can solve the problems that the accuracy of interpolation and filtering of non-translational motion models needs to be improved.

Active Publication Date: 2020-11-06
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current accuracy of interpolation filtering for non-translational motion models needs to be improved

Method used

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  • Image processing apparatus and method
  • Image processing apparatus and method
  • Image processing apparatus and method

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Embodiment Construction

[0055] The following description is taken in conjunction with the accompanying drawings, which form a part of this disclosure and show by way of illustration specific aspects in which the invention may be practiced. It is to be understood that other aspects may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description is not limiting, but the scope of the invention is defined by the appended claims.

[0056] For example, it will be appreciated that a disclosure in connection with a described method may also apply to a corresponding device or system for performing the method, and vice versa. For example, if a specific method step is described, a corresponding device may include means for performing the described method step, even if such means are not elaborated or illustrated in the figures. Furthermore, it is to be understood that the features of the various exemplary a...

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Abstract

The invention relates to an image processing apparatus for determining on the basis of an image defining a plurality of pixel values of an array of pixels (10a-d) an interpolated pixel value of a target pixel (12a-c). The image processing apparatus comprises processing circuitry configured to: obtain a direction angle value associated with the target pixel (12a-c); select for the target pixel (12a-c) a plurality of primary interpolation support pixels (10a-d) from the array of pixels (10a-d) on the basis of the position of the target pixel (12a-c); determine pixel values of a first and a second secondary interpolation support pixel (11ac, 11bd) on the basis of the pixel values of the selected primary interpolation support pixels (10a-d), the direction angle value (a, b) and the position ofthe target pixel (12a-c); and determine the interpolated pixel value of the target pixel (12a-c) on the basis of the pixel values of the first and second secondary interpolation support pixel (11ac,11bd) and the position of the target pixel (12a-c). The technique offers a variety of advantages.

Description

technical field [0001] The present invention relates generally to the field of image processing, in particular video coding. More specifically, the present invention relates to an image processing device and method for interpolating pixel values ​​of sub-integer pixels based on pixel values ​​of a full-integer pixel array, and an inter-frame prediction device for video coding, the Inter prediction devices include such image processing devices. Background technique [0002] Interpolation of digital images, i.e., prediction of pixel values ​​of sub-integer pixels based on pixel values ​​of a two-dimensional array of full integer pixels, is a common tool in many image processing applications (e.g., image resizing or inter prediction for video coding). [0003] For example, in the field of video coding, sub-integer pixel interpolation techniques have been developed to improve the predictive accuracy of the compression levels achievable by inter prediction. In this case, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/523H04N19/80
CPCH04N19/523H04N19/80H04N19/587H04N19/527H04N19/105H04N19/182H04N19/117H04N19/172H04N19/513
Inventor 马克西姆·鲍里索维奇·西切夫乔治·亚历山德罗维奇·朱利科夫蒂莫菲·米哈伊洛维奇·索洛维耶夫谢尔盖·尤里耶维奇·伊科宁
Owner HUAWEI TECH CO LTD
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