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Apparatus and method for detecting moving objects

A technology for detecting motion and moving objects, which is applied to color TV parts, TV system parts, image enhancement, etc., and can solve problems such as complex calculations and problems in analysis algorithms

Inactive Publication Date: 2019-12-31
SIEMENS AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, analysis algorithms in the pixel domain are computationally complex because each individual pixel must be processed
Therefore decoding and analysis in the pixel domain can be problematic in real-time applications or when parallel processing of multiple video streams should be applied

Method used

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  • Apparatus and method for detecting moving objects
  • Apparatus and method for detecting moving objects
  • Apparatus and method for detecting moving objects

Examples

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Embodiment Construction

[0096] figure 1 A device 100 for detecting moving objects in a video sequence is shown, wherein the video sequence is present as a compressed bitstream 1 . The compressed bitstream has a plurality of frames k−1, k, k+1, wherein each of the plurality of frames k−1, k, k+1 is divided into a plurality of blocks 33 .

[0097] The device 100 has a frame determination unit which can select certain frames from the compressed bitstream 1 which are to be used for further processing. This could be, for example, the P and B frames of the compressed bitstream 1 .

[0098] The selected frame 2 is forwarded to the weighting unit 20 which is provided for assigning a weighting value to the block 33 . In this case the weighting unit 20 takes into account the horizontal and vertical spatial components of the block 31 within frame k and the temporal components of the block 31 within a plurality of frames k−1, k, k+1. The assigned weighting values ​​3 can be arranged in a weighting map. Filte...

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Abstract

The invention relates to an apparatus and method for detecting a moving object. Provided is an apparatus for detecting a moving object in a video sequence. The video sequence is present as a compressed bit stream comprising a plurality of frames, each of the plurality of frames is divided into a plurality of blocks. The apparatus comprises a weighting unit which is used for allocating a weighted value for at least one block of the plurality of blocks of a corresponding frame in consideration of a horizontal spatial component of the block within the frame, a vertical spatial component of the block within the frame and a time component of the block within the frame; and a determination unit for determining whether at least one block of the plurality of blocks based on the assigned weighting value and a threshold value has a moving object. By determining the weight value, taking into account three dimensions, an accurate and efficient determination of moving objects can be performed. The invention also provides a method for detecting a moving object in a video sequence.

Description

technical field [0001] The invention relates to devices for detecting moving objects. Furthermore, the invention relates to a corresponding method for detecting moving objects. [0002] The present invention relates to devices and methods for detecting moving objects in a video sequence. Background technique [0003] Many applications such as visual surveillance systems, traffic control systems or access control systems require efficient solutions to detect moving objects in a video stream consisting of multiple video frames. Different detection algorithms have been developed in the past for this reason. A common technique for detecting objects in video frames is known as foreground / background segmentation. Here moving objects (foreground) are separated from the background of the scene (ie each video frame) by applying a sophisticated model capable of distinguishing between foreground and background. This usually results in a binary image that specifies whether a certain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N5/14
CPCG06T7/20G06T2207/10016G06T2207/20021H04N19/48H04N19/513H04N19/547
Inventor P.阿蒙A.胡特M.劳默
Owner SIEMENS AG
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