Abstract
A real-time infrared marker tracking method is proposed, which is implemented with a DSP. Direct memory access (DMA) is introduced to transmit image in background. A ping-pang cache structure is also established on the DSP. Multiple infrared markers are acquired; connected component labeling, and infrared marker identification and tracking are accomplished in real-time. Experimental results show that the processing results can be obtained as soon as the image transmission is completed; the marker accuracy reaches to sub-pixel level. The actual time delay is 5.574 ms that only occupies 16.72% of the CPU cycle, which shows that the proposed method can meet the requirements of real-time processing for high speed image processing applications.
Original language | English |
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Pages (from-to) | 2654-2660 |
Number of pages | 7 |
Journal | Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument |
Volume | 31 |
Issue number | 12 |
Publication status | Published - Dec 2010 |
Keywords
- Connected component labeling
- Infrared marker tracking technology
- Ping-pang cache structure
- Projective transformation