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Frame rate upconverting device and method

A frame and video sequence technology, applied in image communication, television, instruments, etc., can solve problems such as jitter artifacts and discontinuous motion

Active Publication Date: 2014-11-05
ACER INC
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AI Technical Summary

Problems solved by technology

However, when the object or background in the video moves, the frame repetition can cause judder artifacts (judder artifact), and there will be motion discontinuity

Method used

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  • Frame rate upconverting device and method
  • Frame rate upconverting device and method

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Embodiment Construction

[0025] Regarding the aforementioned and other technical contents, features and effects of the present invention, the following reference drawings are Figure 2 ~ Figure 4 It will be clearly presented in the detailed description of the preferred embodiments.

[0026] The present invention provides a frame rate upscaling system using motion estimation / motion compensation technology to achieve local dimming effect. figure 2 Shown is a block diagram of a frame rate upscaling system 200 according to an embodiment of the present invention. The input video 210 can be a video sequence or a video bit stream, such as MPEG 1 / 2 / 4, ITU-T H.264, but not limited thereto. The calculation unit 220 includes a motion estimation unit 221 and a motion compensation unit 222. In an embodiment of the present invention, the calculation unit 220 further includes a decoder 223. When the input video 210 is a video bit stream, the decoder 223 is The input video 210 is decoded in a video compression for...

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Abstract

The invention provides a frame rate upconverting device and method used for a video sequence with at least a first screen and a second screen, wherein the first screen is arranged before the second screen. The frame rate upconverting method comprises the steps of performing motion estimation of the first screen according to the first screen and the second screen, so as to obtain multiple macroblocks and multiple corresponding motion vectors; determining whether the motion vectors are smaller than a preset value; interpolating a high-contrast sub screen to the macroblocks corresponding to the motion vectors smaller than the preset value and interpolating a motion-compensating sub screen to the macroblocks corresponding to the motion vectors greater than the preset value, so as to generate an interpolation screen which is arranged between the first screen and the second screen. The invention allows adjustment of the gray-scale value of the interpolation screen according to the actual situation, thereby enhancing the contrast ratio and achieving the effect of local dimming.

Description

technical field [0001] The present invention relates to displays, and more particularly to a device and method for local dimming using Motion Estimation / Motion Compensation (ME / MC) technology. Background technique [0002] Generally, when a user watches a video, contrast is an element of a screen presentation. The higher the contrast, the better the contrast between black and white in the screen can be presented, making the image of objects in the video more vivid. However, traditionally, global dimming is used to improve the contrast by using the whole frame, which means to control the contrast by making the whole frame brighter or darker. The current more advanced approach is to use local contrast enhancement control to increase the brightness of the main objects displayed on the screen and reduce the brightness of other areas to enhance the contrast of the screen. [0003] Most of the local contrast enhancement technologies applied to displays today adopt the method of l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36H04N5/14
Inventor 卢俊良陈信宇
Owner ACER INC
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