摘要
联合变换相关器在功率谱中产生的目标图像和参考图像的自相关重叠显示于输出面的中心,形成很强的直流光斑,易使CCD探测器饱和,从而影响了对相关峰的识别。通过采用功率谱微分法,配合二值化处理,可消除相关输出中的直流亮斑,锐化了相关峰,从而大大提高了目标识别的准确性,降低了误判的发生。
The self-correlation of target image and reference image in joint transform correlator display overlapped in the center of power spectrum.The direct current spot influence the recognition to correlated peak because its high-intensity lead to the saturation of photo surface of CCD.Power spectrum differential method and two-value processing can remove the zero-order bright spot in the correlated plane,sharpen the correlated peak,improve the accuracy of recognition,reduce the occurrence of misjudge.
出处
《激光与红外》
CAS
CSCD
北大核心
2004年第5期398-399,共2页
Laser & Infrared
