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	Double-threshold image segmentation method based on gray gradient
	Fan Zhihua; Wang Chunhong; Ma Xiaoyu
	2009
会议名称	Proceedings of SPIE International Symposium on Photoelectronic Detection and Imaging 2009 - Advances in Infrared Imaging and Applications
会议日期	2009
卷号	7506
通讯作者	Fan Zhihua
中文摘要	For the segmentation of the dim point target and the extended target under sky background which has low resolution, an automatic thresholding method based on spatial gradient information is presented. It can separate the point target and the extended target from the background even under the strong noise condition, providing good segmentation results for the point target as well as the accurate information of the shape for the extended target. This method first marks the pixels as the background or the target using the image gray gradient roughly, then fit the grayvalue of pixels in the background area to obtain two thresholds, with which the image can be segmented according to the pixel position, and finally the morphological filter is adopted to remove the noise in the segmented image. The experiment shows that, when compared to Otsu in low resolution images with even background, our method can work more accurately and robustly.
英文摘要	For the segmentation of the dim point target and the extended target under sky background which has low resolution, an automatic thresholding method based on spatial gradient information is presented. It can separate the point target and the extended target from the background even under the strong noise condition, providing good segmentation results for the point target as well as the accurate information of the shape for the extended target. This method first marks the pixels as the background or the target using the image gray gradient roughly, then fit the grayvalue of pixels in the background area to obtain two thresholds, with which the image can be segmented according to the pixel position, and finally the morphological filter is adopted to remove the noise in the segmented image. The experiment shows that, when compared to Otsu in low resolution images with even background, our method can work more accurately and robustly.
收录类别	EI
语种	英语
内容类型	会议论文
源URL	[http://ir.ioe.ac.cn/handle/181551/7717]
专题	光电技术研究所_自适应光学技术研究室（八室）
作者单位	中国科学院光电技术研究所
推荐引用方式 GB/T 7714	Fan Zhihua,Wang Chunhong,Ma Xiaoyu. Double-threshold image segmentation method based on gray gradient[C]. 见:Proceedings of SPIE International Symposium on Photoelectronic Detection and Imaging 2009 - Advances in Infrared Imaging and Applications. 2009.

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