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Method and device for calculating geometric moment of target object in image

A target object and calculation method technology, applied in the field of image processing, visual tracking, and electronic technology, can solve problems such as real-time processing and calculation bottlenecks, consume large CPU resources, etc., and achieve the effect of ensuring calculation accuracy and real-time performance

Active Publication Date: 2020-10-02
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of analyzing and calculating geometric moments needs to consume a lot of CPU resources. When the video image frame rate is higher, the CPU calculation speed is also higher, which brings calculation bottlenecks to real-time processing.

Method used

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  • Method and device for calculating geometric moment of target object in image
  • Method and device for calculating geometric moment of target object in image
  • Method and device for calculating geometric moment of target object in image

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Example one, such as figure 1 As shown, a method for calculating the geometric moment of a target object in an image includes the following steps:

[0035] S1: According to the preset data flow direction, use the hardware description language to obtain the image data stream corresponding to the image containing the target object;

[0036] S2: Obtain an image size and a target object pixel size, perform image traversal on the image data stream according to the image size and the target object pixel size according to the preset data flow direction, and calculate the image data streams separately The image geometric moment data set during each image traversal;

[0037] S3: According to the image geometric moment data set of the image data stream at each image traversal, the actual geometric moments of the image data stream at each image traversal are calculated and output, and from all the actual geometric moments, The target geometric moment corresponding to the target object i...

Embodiment 2

[0084] Embodiment two, such as Figure 17 As shown, a device for calculating geometric moments of a target object in an image is applied to the method for calculating geometric moments of a target object in an image of the first embodiment, including an integrated circuit board 1 and an integrated circuit board 1 respectively disposed on the integrated circuit board 1. The data stream input circuit 2, the traversal calculation circuit 3, the target geometric moment extraction circuit 4 and the output circuit 5;

[0085] The integrated circuit board 1 is configured to integrate the data stream input circuit 2, the traversal circuit calculation circuit 3, the target geometric moment extraction circuit 4, and the output circuit 5;

[0086] The data stream input circuit 2 is configured to obtain an image data stream corresponding to an image containing a target object by using a hardware description language according to a preset data flow direction;

[0087] The traversal calculation ci...

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Abstract

The invention relates to a method and device for calculating the geometric moment of a target object in an image. The method comprises the steps: acquiring an image data stream corresponding to the image containing the target object through a hardware description language; acquiring an image size and a target object pixel size, performing image traversal on the image data flow according to the image size and the target object pixel size in a preset data flow direction, and respectively calculating an image geometric moment data set during each image traversal; according to the image geometricmoment data set during each image traversal, performing calculating to obtain actual geometric moments of the image data flow during the image traversal and outputting the actual geometric moments, and extracting a target geometric moment corresponding to the target object from all the actual geometric moments and outputting the target geometric moment. According to the pure hardware solution provided by the invention, traversal calculation of the image data stream is realized, the actual geometric moment of each traversal calculation is output in an assembly line mode, the CPU processing capability is not occupied, and the calculation precision and the real-time performance can be ensured.

Description

Technical field [0001] The invention relates to the technical fields of electronic technology, image processing and visual tracking, and in particular to a method and device for calculating the geometric moment of a target object in an image. Background technique [0002] When a known object is moving in a complex background, it is usually possible to search for and track the object from the complex background using the principle of invariance of the second-order center normalized geometric moment of the object (hereinafter referred to as geometric moment). This visual image tracking method has been widely used in the fields of aircraft tracking, vehicle and pedestrian tracking. [0003] The current application method is mainly by reading a frame of image containing the target object and background, and traversing the target size in the entire image size by writing a program through software. During the traversal process, the current geometric moment value is calculated and compare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/20G06T7/246G06T7/73
CPCG06T1/20G06T7/246G06T7/73
Inventor 王振洪柱肖志康邹洋
Owner WUHAN INSTITUTE OF TECHNOLOGY