Real-time Backup Video Compression Base on Time-domain DPCM
碩士 === 國立臺北科技大學 === 電機工程系所 === 98 === For security of back-up driving, there are cars equipped with Wired Back-up Camera System. The system will transmit the image behind the car to the camera in front of the driving seat, when the car is in back-up mode. It could reduce accidents cause by the sight...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2010
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| Online Access: | http://ndltd.ncl.edu.tw/handle/6wfg84 |
| Summary: | 碩士 === 國立臺北科技大學 === 電機工程系所 === 98 === For security of back-up driving, there are cars equipped with Wired Back-up Camera System. The system will transmit the image behind the car to the camera in front of the driving seat, when the car is in back-up mode. It could reduce accidents cause by the sight which can’t be seen by the driver.
However there are two key concern points about the Wire-less Back-up Camera System: real-time and bandwidth. If the coding is too complicate, it will lead to more compute time.
In this paper it will propose a time-domain method of Differential Pulse Code Modulation(DPCM) instead of the spatial method. Removing the continuing image, adjusting the scale factor, and considering the sense of human visual about luminance and chrominance integrate to meet with the least general standard of wireless bandwidth bit rate of 6Mbps.After research proves this method can both do real-time transmission and keep the quality of image.
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