Image Display Device Motion Compensation for Animation
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Solution Overview
Problem
Image quality deterioration occurs when displaying moving images with a high frame rate due to the discontinuity of motion vectors between frames, particularly in videos with a plurality of consecutive identical images, such as movie and animation videos, during motion-compensated frame rate conversion processing.
Innovation Solution
An image displaying device and method that determines the content genre of the input image signal and adjusts the motion compensation processing accordingly, either disabling interpolation, setting motion vectors to zero, or bypassing the frame rate conversion process for genres like movie and animation, thereby preventing image quality deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If motion-compensated frame rate conversion processing is applied to improve image quality and reduce motion blur, then image quality is improved, but image quality deteriorates when the input video contains consecutive identical frames due to discontinuous motion vectors
Solution Approach 1:
The patent dynamically adjusts the frame rate conversion method based on the content characteristics of the input video. When consecutive identical frames are detected (as in movie/animation content), the system switches from motion-compensated interpolation to simple frame repetition, thereby adapting the processing method to the specific content requirements and preventing image quality deterioration.
Solution Approach 2:
The patent changes the processing parameters (motion compensation intensity, interpolation method) based on the detected content genre. For movies and animations with consecutive identical frames, motion compensation is disabled or reduced, while for other content types, full motion compensation is applied to reduce motion blur.
2Object-affected harmful factors
If frame rate conversion is performed to improve motion blur in hold-type displays, then motion blur is reduced, but unnatural motion artifacts (jerkiness, judder) are generated
Solution Approach 1:
The patent converts the potentially harmful effect of frame rate conversion (which can cause jerkiness) into a beneficial outcome by using motion-compensated interpolation. This technique uses motion vectors to accurately predict pixel positions between frames, thereby generating smooth intermediate frames that reduce motion blur without introducing unnatural artifacts.
3Manufacturing precision
If motion vectors are used for interpolation to generate natural moving images, then image naturalness is improved, but processing complexity increases
Solution Approach 1:
The patent segments the video content into different genre categories (movie, animation, other) based on characteristics such as the presence of consecutive identical frames. This segmentation allows the system to apply different processing strategies to different content types, reducing overall processing complexity while maintaining image naturalness where needed.
Data Source
AI summary
It is an object to prevent the image quality deterioration of a moving image likely to include a plurality of the same consecutive images such as a movie video and an animation video due to the motion-compensated frame rate conversion (FRC) processing. An image displaying device is provided with an FRC portion (10) for converting the number of frames in an input image signal by interpolating an image signal to which a motion compensation processing has been given between the frames in the input image signal, a genre determining portion (14) for determining whether the input image signal is a predetermined genre, and a controlling portion (15). The FRC portion (10) includes a motion vector detecting portion (11e) for detecting a motion vector between the frames of the input image signal, an interpolating vector evaluating portion (11f) for allocating an interpolating vector between the frames based on the motion vector information, and an interpolating frame generating portion (102) for generating an interpolating frame from the interpolating vector. In the case that the input image signal is relating to a movie or animation, the control portion (15) set the motion vector detected by the motion vector detecting portion (11e) to zero-vector to make the motion compensation processing of the FRC portion (10) ineffective.