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Double-threshold image segmentation method based on gray gradient
Fan Zhihua; Wang Chunhong; Ma Xiaoyu
Volume7506
2009
Language英语
Indexed ByEi
Subtype会议论文
AbstractFor 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.; 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.
Conference NameProceedings of SPIE International Symposium on Photoelectronic Detection and Imaging 2009 - Advances in Infrared Imaging and Applications
Conference Date2009
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7717
Collection自适应光学技术研究室(八室)
Corresponding AuthorFan Zhihua
Affiliation中国科学院光电技术研究所
Recommended Citation
GB/T 7714
Fan Zhihua,Wang Chunhong,Ma Xiaoyu. Double-threshold image segmentation method based on gray gradient[C],2009.
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2009-026.pdf(298KB)会议论文 开放获取CC BY-NC-SAApplication Full Text
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