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Image processing method and circuit

一种图像处理、电路的技术，应用在图像处理领域，能够解决图像扰动、运动向量不准确等问题，达到减轻干扰、抑制或减轻图像扰动、准确运动向量的效果

Active Publication Date: 2021-03-12
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  • Claims
  • Application Information

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Problems solved by technology

The motion vector (motion vector) between two frames or images is usually estimated based on the sum of absolute difference (SAD) between pixels, but the brightness change of frames or images is easy The motion vector estimated based on SAD becomes inaccurate, and eventually the interpolated picture has the side effect of so-called image disturbance (shimmer).

Method used

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  • Image processing method and circuit
  • Image processing method and circuit

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Embodiment Construction

[0016] The technical terms in the following description refer to the customary terms in this technical field. If some terms are explained or defined in this manual, the explanations of these terms shall be based on the descriptions or definitions in this manual.

[0017] The disclosed content of the present invention includes an image processing method and an image processing circuit. Since some of the components included in the image processing circuit of the present invention may be known components individually, the details of the known components will be omitted in the following description without affecting the full disclosure and practicability of the invention of the device. . In addition, part or all of the flow of the image processing method of the present invention can be in the form of software and / or firmware, and can be executed by the image processing circuit of the present invention or its equivalent device, without affecting the full disclosure and Under the p...

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Abstract

The invention discloses an image processing method and circuit, which are applied to motion estimation. The method comprises the steps of: performing low-pass filtering on a first picture and a secondpicture, wherein the first picture is a part of a first picture frame, the second picture is a part of a second picture frame, and the first picture frame is not equal to the second picture frame; calculating a first characteristic value of the first picture and calculating a second characteristic value of the second picture; calculating an absolute difference sum between the first picture and the second picture; mixing the difference value of the first characteristic value and the second characteristic value with the sum of the absolute difference values to generate a mixed result; and estimating a motion vector between the first picture and the second picture according to the mixing result.

Description

technical field [0001] The present invention relates to image processing, and more particularly to motion estimation and motion compensation. Background technique [0002] Motion Estimation and Motion Compensation (MEMC) technology is often applied to the frame rate conversion of image processing. For example, converting an image from a low frame rate to a high frame rate requires the use of MEMC technology for motion interpolation (motion interpolation). The motion vector (motion vector) between two frames or images is usually estimated based on the sum of absolute difference (SAD) between pixels, but the brightness change of frames or images is easy As a result, the motion vector estimated based on the SAD becomes inaccurate, and eventually the interpolated image has a side effect of so-called shimmer. The phenomenon of image disturbance means that the interpolated frame is not coherent with adjacent frames, and this phenomenon usually occurs in areas with dense and irre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01
CPCH04N7/0127H04N7/014G06T5/50G06T2207/20224G06T7/254G06T5/20G06T2207/20024G06T5/70
Inventor 伞光宇
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