| 基于数学平台的实时图像消旋系统 |
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| 引用本文： | 陈二瑞,乔永明,梁雁冰,王晨. 基于数学平台的实时图像消旋系统[J]. 传感技术学报, 2010, 23(4) |
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| 作者姓名： | 陈二瑞 乔永明 梁雁冰 王晨 |
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| 作者单位： | 中国科学院西安光学精密机械研究所 |
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| 摘 要： | 针对两轴光电经纬仪动基座跟踪目标时，视轴无法隔离载体扰动造成图像旋转现象，本文提出了一种基于数学平台的电子消旋方法，采用捷联式惯导系统+DSP+FPGA的硬件系统通过反向旋转和双线性插值对图像进行消旋和填充，完成视频恢复，该系统已成功应用于小型舰载经纬仪上，可完成720×576×24大小彩色视频图像的恢复，输出帧频25f/s，图像质量良好，系统输出误差小于1个象元。
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| 关 键 词： | 经纬仪；实时图像消旋；数学平台；双线性插值；DSP+FPGA |
A Real-time Image Rotation-elimination System Based on Mathematics Platform |
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| Abstract: | In order to eliminate image rotation caused by carrier perturbation when the two-axis viedo theodolite tracks target on the mobile pedestal, an electronic rotation-elimination method based on mathematical platform is proposed. The hardware system with strapdown inertial navigation system (SINS), DSP and FPGA, can eliminate rotation and fill the image by means of reverse rotation and bilinear interpolation. This system has successfully applied into minitype shipboard theodolite, can carry out the restoration of 720×576×24 color video image, and achieve 25f/s frame frequency for one high quality image, and the system output error is less than one pixel. |
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| Keywords: | Theodolite Real-time image rotation-eliminate Mathematics platform Bilinear interpolation DSP+FPGA |
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