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Motion estimator device and motion estimating method

A technology of motion estimation and equipment, which is applied to TVs, color TV parts, electrical components, etc., can solve problems such as difficulty in finding motion vectors, easy distortion of images, and difficulty in scrolling text to find its motion vectors

Inactive Publication Date: 2007-06-20
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of motion estimation and compensation has limitations in practical use because it is difficult to find the correct motion vector
[0004] For example, scrolling text in a moving background has great difficulty in finding its motion vector when the text itself has many similar edges
[0005] Specifically, images are easily distorted in the boundary regions between text regions and moving backgrounds due to motion estimation errors

Method used

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  • Motion estimator device and motion estimating method
  • Motion estimator device and motion estimating method
  • Motion estimator device and motion estimating method

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Embodiment Construction

[0056] The matters defined in the specification, such as detailed structures and components, are provided to assist in a comprehensive understanding of the embodiments of the present invention, and are exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions will be omitted for clarity and conciseness. Exemplary embodiments of the present invention shown in the accompanying drawings will now be described in detail.

[0057] A motion estimation apparatus and a motion estimation method that minimize image distortion due to motion errors in a text region according to exemplary embodiments of the present invention introduce the following assumptions.

[0058] The text area belongs to the object area that can be separated from the background area.

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Abstract

An apparatus and method for estimating motion are provided. The apparatus comprises a background representative calculator for calculating a background representative vector representing background motion of a frame to be interpolated on the basis of motion vectors of the frame to be interpolated, a block motion calculator for calculating motion vectors for respective blocks of the frame to be interpolated on the basis of a current frame and a previous frame, for providing the motion vectors to the background representative calculator, and for calculating background motion vectors for the respective blocks through local search on the basis of the background representative vector output from the background representative calculator, a motion error detector for determining whether each block is in a text area on the basis of the motion vectors and the background motion vectors output from the block motion calculator and a motion correcting unit for determining whether each block in the text area is in a boundary area on the basis of motion vectors of peripheral blocks of each block when each block is in the text area, and for correcting a motion vector of each block in the boundary area when each block in the text area is in the boundary area.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2005-0123392 filed in the Korean Intellectual Property Office on December 14, 2005, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to a motion estimation device and a motion estimation method. More particularly, the present invention relates to a motion estimation device and a motion estimation method that minimize motion errors generated in a text area. Background technique [0003] Generally, converting a frame rate using a frame rate converter in a display device is effective for timing adjustment, gray scale representation, etc. of a display panel. To this end, a method of estimating and compensating motion using motion vectors of individual blocks in a frame rate converter and / or a deinterleaver has been proposed to display a natural moving image. However, this motion estimation and compensation method has limitations in pract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14
CPCH04N19/00654H04N19/00751H04N19/00533H04N19/00127H04N19/0066H04N19/00587H04N19/00642H04N19/132H04N19/44H04N19/51H04N19/55H04N19/557H04N19/56H04N19/587
Inventor 成和锡闵钟述
Owner SAMSUNG ELECTRONICS CO LTD