CAJ | 학술논문

视觉传感器越来越多地应用到嵌入式系统中，通常对视频信号的处理是先对模拟信号数字化，然后再利用嵌入式处理器进行计算。大量的数据和处理器处理能力的差异尤为显著，以至于限制了视觉传感器的广泛使用。本文提出一种基于硬件的模拟差分处理以及射影畸变校正的图像系统，通过像素模拟信号的差分实现边缘检测，同时通过查表校正在摄像头的像平面与地面不平行时产生的图像射影畸变，便于后续的图像处理和模式识别。该方法提高了信号处理的实时性，减轻了视觉传感器对处理能力的依赖。
시각전감기월래월다지응용도감입식계통중，통상대시빈신호적처리시선대모의신호수자화，연후재이용감입식처리기진행계산。대량적수거화처리기처리능력적차이우위현저，이지우한제료시각전감기적엄범사용。본문제출일충기우경건적모의차분처리이급사영기변교정적도상계통，통과상소모의신호적차분실현변연검측，동시통과사표교정재섭상두적상평면여지면불평행시산생적도상사영기변，편우후속적도상처리화모식식별。해방법제고료신호처리적실시성，감경료시각전감기대처리능력적의뢰。
The video camera is widely applied to embedded systems .Before further processed by the embedded systems , the ana-log video signal is usually digitized first .The large amount of data has made the difference of the processing capability much sig-nificant, and that limits the widespread use of vision sensor .An analog video signal processing system with differential and image rectification is proposed , in which the differential between pixel in analog signal is used to detect the edge .Meanwhile, the pro-jective distortion is corrected according to lookup table .It is easier for further processing after the rectification of projective distor-tion.The solution improves the real time of signal processing and reduces the dependence on processing capability .