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Method for realizing KLT (Karhunen Loeve Transform) moving target tracking algorithm based on multicore DSP (Digital Signal Processor)

A moving target, tracking algorithm technology, applied in computing, image analysis, instrumentation, etc., can solve the problem of computing time and other problems, and achieve the effect of shortening computing time, short code length, and high execution efficiency

Inactive Publication Date: 2013-06-26
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0004] Table 1. Calculation time corresponding to the number of feature points

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  • Method for realizing KLT (Karhunen Loeve Transform) moving target tracking algorithm based on multicore DSP (Digital Signal Processor)
  • Method for realizing KLT (Karhunen Loeve Transform) moving target tracking algorithm based on multicore DSP (Digital Signal Processor)
  • Method for realizing KLT (Karhunen Loeve Transform) moving target tracking algorithm based on multicore DSP (Digital Signal Processor)

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Embodiment Construction

[0036] combine figure 1 , the present invention is based on the realization method of the KLT moving sign tracking algorithm of multi-core DSP, and the steps are as follows:

[0037] In the first step, because each frame of the video needs to be processed, the amount of processed data is relatively large and the algorithm complexity is high. Traditional processors generally cannot meet the speed requirements. This system uses the latest one launched by TI. Octa-core TMS320C6678 high-speed digital signal processor with high cost performance, such as Figure 5 Its internal structure is introduced, and it can be seen that it has a powerful multiply-accumulator and parallel processing structure. The processor is an eight-core floating-point DSP, and the maximum operating frequency of each core reaches 1.25GHz. A single instruction cycle can perform 32 fixed-point data operations, or perform 16 floating-point data operations. The whole chip provides 320GMAC fixed-point calculation...

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Abstract

The invention discloses a method for realizing a KLT (Karhunen Loeve Transform) moving target tracking algorithm based on a multicore DSP (Digital Signal Processor). The method disclosed by the invention comprises the steps of: image smoothing, pyramid graph calculating, image gray value difference calculating, feature point selecting, feature point tracking and feature point consistency checking; and six modules for executing the steps are transplanted into the multicore DSP, wherein one core is allocated to each module, and the processing is carried out in a datastream manner. According to the method, a KLT tracking algorithm is adopted, and the advantage and processing speed of multicore parallel execution of the multicore DSP are used, so that the real-time and accurate tracking of moving targets can be realized.

Description

technical field [0001] The invention belongs to the technical field of infrared target search and tracking, in particular to the field of real-time tracking of moving targets. Background technique [0002] The detection and tracking of moving objects is an important part of digital image processing technology. It includes pattern recognition, computer vision, video signal processing and other disciplines, and the application of this technology is also increasing. In recent years, people have continuously developed new algorithms for the detection and tracking of moving targets. However, due to the constraints of the calculation amount of the algorithm and the processing speed of the hardware platform, the two key performance indicators of moving target tracking: real-time and accuracy The balance of degrees is difficult to grasp. In order to realize the real-time requirements in the moving target tracking system, some measures need to be taken to increase the processing sp...

Claims

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Application Information

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IPC IPC(8): G06T7/20
Inventor 钱惟贤胡楷杨力尹章芹任建乐顾国华陈钱路东明
Owner NANJING UNIV OF SCI & TECH
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