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LOW-COMPLEXITY AND LOW-LATENCY ANIMATION DETECTION IN SCREEN CONTENT VIDEO

IP.com Disclosure Number: IPCOM000237811D
Publication Date: 2014-Jul-14
Document File: 5 page(s) / 61K

Publishing Venue

The IP.com Prior Art Database

Related People

Sijia Chen: AUTHOR [+3]

Abstract

Techniques are provided for a low-complexity, low-latency method of animation detection in screen content video. Even if there is no time information available, this method can detect animation content with respect to a targeted/reference pattern in screen content video. The targeted pattern is based on practical observations, and can represent many types of animation content found in screen content video. This method does not require complex modules or flows between the encoder and upper layer processing function.

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LOW-COMPLEXITY AND LOW-LATENCY ANIMATION DETECTION IN SCREEN CONTENT VIDEO

AUTHORS:

Sijia Chen

 Karina Li Gang Yang

CISCO SYSTEMS, INC.

ABSTRACT

    Techniques are provided for a low-complexity, low-latency method of animation detection in screen content video. Even if there is no time information available, this method can detect animation content with respect to a targeted/reference pattern in screen content video. The targeted pattern is based on practical observations, and can represent many types of animation content found in screen content video. This method does not require complex modules or flows between the encoder and upper layer processing function.

DETAILED DESCRIPTION

    Animations, such as those in PowerPoint® presentations, are a visually impressive function but often contribute relatively little information content to viewers. In real-time screen sharing during an online conference session, when the bandwidth is limited, animations can be put to a lower priority or lower level of encoding quality, so as to improve the efficiency of bandwidth usage. For purposes of this description, animation is a group of continual frames which only stay on the screen for a very short time period.

    The requirement of animation detection is important when there is no additional information available from an operation system or the application, to inform the encoder of the start and end of animations. If latency is allowed, it is easy for the encoder to determine whether a frame stays on the screen for a short period of time, by checking the arrival time or new content of the next frame. However, adding latency is not tolerated

Copyright 2014 Cisco Systems, Inc.

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for real-time solutions. It may be acceptable to add heartbeat checking to control the additional latency to a very low level, but this will increase the complexity of implementation.

    Proposed herein is a method of detecting animations using information existing during the encoding process. It does not require additional latency and can achieve animation detection using very simple operations.

    This idea proposes a low-complexity, low-latency method of animation detection in screen content video. The innovation is based on the observation that detection of animation is based not only time duration but also differences in the data pattern of the prev...