|
|||||
|
|
A STUDY ON REAL-TIME LOW-FREQUENCY SPATIAL FILTERING PROCESS OF AN OPTICAL IMAGE USING LiNbO3:Fe CRYSTAL |
|
| Authors: | LIU SI-MIN LU YI CHEN HAI-DONG LIU JUN-MIN XU JING-JUN ZHANG GUANG-YIN YANG LI-SEN MEN LI-QIU SUN QIAN |
| Abstract: | The optimum image processing result of low-frequency filtering was obtained when LiNbO3:Fe crystal as a spatial filter was placed at a certain position behind the spatial-frequency spectral plane of an optical Fourier transform system, which corresponds to the minimum transmittance ratio in Z-scan curve. The experimental results show that self-defocusing due to photorefractive negative-lens effect is the main factor responsible for the low- frequency filtering. |
| Keywords: | |
| 点击此处可从《中国物理》浏览原始摘要信息 | |
| 点击此处可从《中国物理》下载免费的PDF全文 | |