中文摘要：

提出红外图像小目标检测多级滤波算法的一种ASIC体系结构实现方案．该结构有三个数据通道。分别级连不同数量的1×3基本滤波模板;每路数据通道采用流水线结构，其中乘法电路由移位相加电路构成以提高运算速度；采用定点运算，计算精度为8位二进制小数，可处理位宽为8～16位的数据，吞吐量5M pixel／s～10M pixel／s，支持128×128，256×256，320×240三种帧格式的图像滤波．设计采用SMIC 0．35μm工艺，芯片面积为3．2mm×2．7mm，芯片内部工作频率为50MHz．芯片滤波实现方式相对软件实现的方式，最大绝对误差0．4833，可满足实际精度的要求．该芯片可以用于同时检测大小不同小红外小目标．

英文摘要：

An ASIC architecture was proposed on the basis of the multilevel filter algorithm for detecting the small targets of infrared images. This architecture possessed three data-paths and cascaded different basic 1×3 filter templates respectively. Pipeline technique was used in each data-path. In order to improve the process speed, the multipliers in the data-path were substituted by shift-and-add circuits. Fixed point calculation was implemented with the precision of 8 bits. This architecture can process data with 8-16 bits. Its throughput capacity is 5 Mpixel/s-10 Mpixel/s. It support image sizes with 128×128, 256×256 and 320 × 240. SMIC 0.35μm technology was adopted for this design. Chip area was 3.2 mm×2.7 mm and inner frequency was 50 MHz. The maximum absolute error was 0. 483 3 between chip implementation and software implementation, meeting the practical requirements. The chip can be used to detect infrared small targets with different sizes simultaneously.