Dynamic Video Images Real-time Measurement Technologies To Achieve

The dynamic real-time measure system based on video image utilizes multimedia technique and digital video processing to fulfill measure of self-straight theodolite video data; meanwhile it can real-time collect video signal of CCD fixed in two self-straight parallel light-tube and process video, estimates distortion of two-dimension to realize real-time dynamic distortion measure .This paper' s main research content is the realization, exploitation and constitutes of dynamic real-time measure technique based on video image. The difference between this video image measure system and previous measure system is this system' s dynamic real-time. The previous video measure system was afterwards measure which can process 3-6 frame per-second, Whereas in this system it can process two image in 20ms. This paper adopt several means based on task' s trait and need , as follows:1, apply MC₃0 multi-collection-clip of Beijing JionHope Image Technology Ltd. which can realize collect two image simultaneity and reach 100 frame/s. 2. leave out some video image pretreatment, and only segmentation of image which can save much time 3. adopt part-area measure to receive undershoot value in order to save time because of the smallness of image target when system works at highest frequency.This paper also discuss several segmentation algorithms of digital video processing, compare their processing result and select propriety algorithm which adapts system .In this paper , the device diver program is developed on Window NT , the application program is developed on Windows' 2000 operation flat using Visual C++ 6.0 program circumstance .In the developing course ,we use fully it's strong thread manage capability and rich news manage function , as well as friendly interface resource so that the application programs complete the following tasks: video images collection and processing ,measure data processing >storage>printing and communication with self-straight theodolite , ect.The video measure system developed in this paper can realize high-speed video collection, collect two video signal , real-time watchvideo image, real-time show information , real-time process and memorize data . In a word, this system realize dynamic real-time measure technique based on video image.