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Background image establishment method and background image establishment device

A background image and image technology, applied in the field of image processing, can solve the problem of low accuracy of the background image

Active Publication Date: 2016-11-23
WUHU LION AUTOMOTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the traffic flow is large and the road surface is covered by vehicles, the accuracy of the background image established by the above method is low

Method used

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  • Background image establishment method and background image establishment device
  • Background image establishment method and background image establishment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] An embodiment of the present invention provides a method for creating a background image, the execution subject of the method may be a vehicle-mounted terminal, see figure 1 , the method includes:

[0060] Step 101: Select an image every preset number of frames in the input first video sequence image to obtain a second video sequence image.

[0061] Step 102: Calculate a first difference image between two adjacent frames of images in the second video sequence image to obtain a plurality of first difference images.

[0062] Step 103: Determine the traffic flow category corresponding to the second video sequence image according to the plurality of first difference images.

[0063] Step 104: If the traffic flow category is heavy traffic flow, reorganize the images in the second video sequence image according to the multiple first difference images to obtain the third video sequence image; according to the third video sequence image and the statistical histogram algorithm ,...

Embodiment 2

[0067] An embodiment of the present invention provides a method for creating a background image, the execution subject of the method may be a vehicle-mounted terminal, see figure 2 , the method includes:

[0068] Step 201: Select an image every preset number of frames in the input first video sequence image to obtain a second video sequence image.

[0069] The preset number of frames can be set and changed as required, and the preset number of frames is not specifically limited in this embodiment of the present invention. In order to avoid situations where some moving vehicles are connected and the same object has a high probability of appearing in the distant view, the preset number of frames may be an integer greater than or equal to 5.

[0070] For example, when the preset number of frames is 5, this step can be:

[0071] In the input first video sequence image f, a frame image is selected every 5 frames to obtain a second video sequence image m.

[0072] Step 202: Calc...

Embodiment 3

[0153] An embodiment of the present invention provides a device for creating a background image, the device is used to implement the method for creating a background image in Embodiment 1 and Embodiment 2, see image 3 , the device consists of:

[0154] The selection module 301 is used to select a frame image every preset number of frames in the input first video sequence image to obtain a second video sequence image;

[0155] The first calculation module 302 is used to calculate the first differential image between two adjacent frames of images in the second video sequence image to obtain a plurality of first differential images;

[0156] A determining module 303, configured to determine the traffic flow category corresponding to the second video sequence image according to the plurality of first differential images;

[0157] The first establishing module 304 is used to reorganize the images in the second video sequence images according to the plurality of first differential...

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Abstract

The invention belongs to the technical field of image processing and discloses a background image establishment method and a background image establishment device. The method includes: selecting a frame of an image in input first video sequence images at an interval of a preset frame number to obtain second video sequence images; calculating a first difference image between each two adjacent frame images in the second video sequence images to obtain a plurality of first difference images; determining a traffic flow category corresponding to the second video sequence images according to the first difference images; if the traffic flow category is large traffic flow, recombining images in the second video sequence images to obtain third video sequence images; establishing background images according to the third video sequence images and a statistical histogram algorithm; if the traffic flow category is small traffic flow, establishing background images according to the second video sequence images and the statistical histogram algorithm. The device comprises a selection module, a first calculation module, a determination module, a first establishment module and a second establishment module.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for establishing a background image. Background technique [0002] In vehicle visual navigation, vehicle detection is the basis of the entire vehicle tracking process. The later vehicle motion estimation and vehicle tracking are all based on correct and reliable vehicle detection. However, the background image plays an important role in vehicle detection. The accuracy of the background image directly affects the accuracy of vehicle detection and the accuracy of vehicle tracking. [0003] At present, the process of establishing the background image may be as follows: collecting multiple frames of images, and establishing the background image by using a statistical histogram method according to the multiple frames of images. [0004] There are at least the following problems in the prior art: [0005] When the traffic flow is large and the road surfac...

Claims

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Application Information

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IPC IPC(8): G06T5/40
CPCG06T5/40
Inventor 曾庆喜马杉冯玉鹏方啸
Owner WUHU LION AUTOMOTIVE TECH CO LTD
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