Design Of Real-time Capture Camera For Spatial Marker Dynamic Coordinate

Now the animation production technology needs to capture real-time dynamic coordinates of the target,used to make animation.The capture system is required high real-time and fast calculation.This paper designs and realizes a real-time capture camera for spatial marker dynamic coordinate.Tracking the dynamic targets from different orientations,and calculating the centroid coordinates of all the dynamic objects.The motion of the dynamic target is transformed into the animation action by the three-dimensional synthesis technique,thus reducing the complexity of the animation.The system mainly implements two functions,namely,real-time display of dynamic target image and calculation of centroid coordinates of multiple dynamic targets.Image data acquisition part is Micron's MT9P031 image sensor,the image resolution of 1280×720,frame rate up to 60 frames/sec.The main controller is FPGA,using Xilinx's Spartan6 chip.The FPGA configures the image sensor.FPGA to COMS image sensor image data through the Gigabit network to the host computer,the host computer MFC interface for dynamic target image real-time display.Or FPGA to the dynamic target image data binarization,extract the dynamic target edge coordinate data,the data transfer to the block RAM cache,and then sent to the MicroBlaze soft core,soft core within the C language program based on a straight line of fast connectivity domain detection algorithm,according to a number of dynamic targets edge coordinate data,quickly calculate the center of gravity coordinates of each target,the target space coordinate data to another block RAM cache,and then the data through the Gigabit network transmission host computer.Gigabit network function is to transfer FPGA data to the host computer,using the three-state Ethernet MAC core(TEMAC)and 88E1111 high-speed Ethernet transceiver.The MFC interface realizes the real-time display of changes of the coordinate range of the target space in real time.The MFC operator interface can send control commands and parameter settings to the FPGA.After testing,the system can achieve real-time display of 60 images.And the CMOS image sensor to 60 frames of the frame rate of images,up to real-time calculation of more than 200 dynamic targets center of mass coordinates.The entire system can be calculated within 16 ms 200 dynamic target spatial coordinates.