一种基于嵌入式全景视频流影像数据实时拼接方法

Real-time splicing method of image data based on embedded panoramic video stream

针对机载全景视频流影响,提出了一种基于嵌入式的全景实时拼接方法。提取图像中的SURF(speeded up robust features)特征点,生成特征描述子。通过计算2个特征点之间的欧式距离来确定匹配度,经过仿射变换后,利用泊松变换实现图像间的融合平滑处理。将上述流程在目标设备上进行并发执行,根据每个流程自身的特点进行定制化优化,实现全景实时拼接。试验测试表明,本方法实现了拼接接缝处基本无缝的效果,拼接速度达到30 Hz,能够满足实时显示的要求。

Aiming at the influence of airborne panoramic video stream, a panoramic real-time splicing method based on embedded mode was proposed. The speeded up robust features(SURF) points in the image were extracted to generate the feature descriptors. The matching degree was determined by calculating the Euclidean distance between two feature points. After affine transformation, the Poisson transform was used to realize the fusion and smoothing between images. The above processes were executed concurrently on the target equipment, and customized optimization was carried out according to the characteristics of each process to realize the panoramic real-time splicing. After test, the proposed method realizes the seamless effect at the splicing joint, and the splicing speed reaches 30 Hz, which can meet the requirements of real-time display.