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Electronic video image stabilization

An image and video frame technology, applied in the field of video processing, can solve the problem of not being able to distinguish between real motion and unwanted jitter

Active Publication Date: 2009-04-15
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some EIS systems work well in many situations, but may suffer from inability to distinguish real motion from unwanted jitter

Method used

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  • Electronic video image stabilization
  • Electronic video image stabilization

Examples

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Embodiment Construction

[0023] figure 1 is a block diagram of an exemplary device 2 that may implement scalable electronic image stabilization techniques in accordance with the present invention. Device 2 may form part of a digital video processing device capable of encoding video data. A digital video processing device may process video obtained by a video capture device, such as a video camera or a video archive that stores previously captured video. For example, device 2 may form part of a digital video camera, laptop computer, desktop computer, wireless communication device such as a cellular or satellite radiotelephone, a personal digital assistant (PDA), or any device with digital video capabilities. Video capture devices may be susceptible to unwanted judder that corrupts video quality. Motion estimation can be used for image stabilization. However, motion may occur due to unintentional shaking of the video capture device or intentional movement resulting from panning, zooming, tilting, or ...

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Abstract

This disclosure describes electronic video image stabilization techniques for imaging and video devices. The techniques involve determining motion and spatial statistics for individual macroblocks of a frame, and determining a global motion vector for the frame based on the statistics of each of the macroblocks. In one embodiment, a method of performing electronic image stabilization includes performing spatial estimation on each of a plurality of macroblocks within a frame of an image to obtain spatial statistics for each of the macroblocks, performing motion estimation on each of the plurality of macroblocks to obtain motion statistics for each of the macroblocks, integrating the spatial statistics and the motion statistics of each of the macroblocks to determine a global motion vector for the frame, and offsetting the image with respect to a reference window according to the global motion vector.

Description

[0001] This application claims the benefit of US Provisional Application No. 60 / 790,514, filed April 6, 2006, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to video processing, and more particularly to techniques for electronic image stabilization in electronic video applications. Background technique [0003] As imaging devices become lighter and smaller, images captured by such devices are more susceptible to quality degradation due to unintentional shaking. In still image capture, shaking may produce blurred images. In video capture, jitter can cause jitters or jumps in the video image. Jitters and jumps can make it difficult for the human visual system to focus and focus on relevant areas and objects within the video. When this judder appears to be combined with real motion in the video, adverse effects can be compounded. In any case, the quality of the video or image viewing experience is degraded. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N7/26H04N23/40
CPCH04N7/26127H04N19/00157H04N5/23267H04N7/26771H04N5/23254H04N5/23264H04N19/00593H04N5/23248H04N19/14H04N19/527H04N23/68H04N23/6811H04N23/682H04N23/683
Inventor 拉戈哈文德拉·C·纳加拉杰纳伦德拉纳特·马拉亚特
Owner QUALCOMM INC
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