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Car window area identifying method and device based on sobel edge detection

An edge detection and car window technology, applied in the field of image processing, can solve the problems of weak anti-interference ability, position recognition of car window area, and small brightness difference, and achieve the effect of improving anti-interference ability.

Inactive Publication Date: 2015-05-20
SHENZHEN LAUNCH DIGITAL TECH
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Problems solved by technology

The disadvantage of this method is that the anti-interference ability is weak. If the brightness of the window area is not much different from the brightness of other areas of the car body, it is difficult to accurately identify the position of the window area; An area similar to the area, and its brightness characteristics are also different from other areas of the car body, it will be misidentified

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  • Car window area identifying method and device based on sobel edge detection
  • Car window area identifying method and device based on sobel edge detection
  • Car window area identifying method and device based on sobel edge detection

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The process of the first embodiment of a method for identifying a window area based on sobel edge detection in the present invention, see Figure 1-a , the method includes:

[0022] 101: Use the sobel gradient operator to calculate the gradient in the vertical direction for the recognition area to obtain the horizontal edge image, and use the inclined sobel operator to calculate the gradient in the 45° and 135° directions to obtain the edge image in the 45° direction and the edge image in the 135° direction.

[0023] According to the license plate position, expand 4 license plate widths to the left and right, and expand 30 license plate heights upwards to form a recognition area.

[0024] Use the sobel operator to calculate the ...

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Abstract

The invention discloses a car window area identifying method and device based on sobel edge detection and belongs to the field of image processing. The car window area identifying method includes calculating gradient in the vertical direction by sobel gradient operator in the identifying area to obtain a horizontal edge image and gradient in the directions of 45 degrees and 135 degrees by oblique sobel operator to obtain a 45-degree edge image and a 135-degree edge image; determining upper and lower borders of a car window according to the horizontal edge image and left and right borders of the car window according to the 45-degree edge image and the 135-degree edge image. By the car window area identifying method and device based on sobel edge detection, interference resistance of identification of the car window is improved.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and device for identifying a vehicle window area based on sobel edge detection. Background technique [0002] In recent decades, intelligent transportation systems have achieved rapid development. Vehicle window area recognition is a relatively new research direction in intelligent transportation systems, and has many important applications: it provides a basis for the vehicle type recognition system, and improves the correct recognition rate of vehicle types to a large extent; it is applied to the driver recognition system, Tracking driver information; applied to the seat belt recognition system, greatly reducing the search range and improving the accuracy of seat belt positioning. Therefore, the identification of the window area is becoming more and more important. [0003] Existing vehicle window region identification methods all start from the gray value of the vehi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06T7/00
Inventor 王亚夫
Owner SHENZHEN LAUNCH DIGITAL TECH