完整的视频车辆检测的原理是首先通过图像采集系统采集视频图像，数字化，存入内存或帧缓存中；对数字图像进行预处理(滤波除噪、图像锐化、对比度增强)，从而减小噪声对图像质量的影响。(The principle of complete video vehicle detection is to collect video images from the image acquisition system first, digitize, save the memory or fr a me cache, and preprocess the digital image (filter denoising, image sharpening, contrast enhancement) to reduce the noise to image quality.)