Abstract
For the purpose of making a smart car which can recognize the road make up of a black line wide of 2.5cm and white background, a video capture system based on SAA7113 is designed. The chip SAA7113, a video decoder, is used for video capture of the smart car. First, the hardware of SAA7113 peripheral circuit is designed, through the SAA7113, the analog video signal collected from CCD sensor is converted into digital, and the valid row signals and parity field signals are extracted. Second, the initialize configuration of SAA7113 is realized via the I2C bus. Finally, the algorithm of video capture is proposed. The results showed that the video capture system can get a 30x80 image every 20ms, and the image can basically reflect the road information, which can be meet the control requirements of the smart car.
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