为提高船舶目标检测中图像拼接质量,本次针对传统拼接方法存在的问题:无法同时实现拼接图像画质以及结构相似度的双向目标,研究了一种新的舰船远程监控平台模糊视频高动态图像拼接方法。该方法主要分为三步骤,首先对待拼接的模糊视频高...为提高船舶目标检测中图像拼接质量,本次针对传统拼接方法存在的问题:无法同时实现拼接图像画质以及结构相似度的双向目标,研究了一种新的舰船远程监控平台模糊视频高动态图像拼接方法。该方法主要分为三步骤,首先对待拼接的模糊视频高动态图像进行处理,包括图像去噪、图像分割、图像畸形矫正,然后在此基础上利用基于特征信息方法进行图像配准,主要包括图像特征提取、图像匹配等,最后采用直接平均算法实现图像融合,完成图像拼接。结果表明:与传统图像拼接方法相比,本方法操作下,图像峰值信噪比分别提高1.8 d B和2 d B,结构相似度分别提高10.8%和8.2%,证明了本方法的有效性和优越性。展开更多
In this paper, motion analysis methods based on the moment features and flicker frequency features for early fire flame from ordinary CCD video camera were proposed, and in order to describe the changing of flame and ...In this paper, motion analysis methods based on the moment features and flicker frequency features for early fire flame from ordinary CCD video camera were proposed, and in order to describe the changing of flame and disturbance of non-flame phenomena further more, the average changing pixel number of the first-order moments of consecutive flames has been defined in the moment analysis as well. The first-order moments of all kinds of flames used in our experiments present irregularly flickering, and their average changing pixel numbers of first-order moments are greater than fire-like disturbances. For the analysis of flicker frequency of flame, which is extracted and calculated in spatial domain, and therefore it is computational simple and fast. The method of extracting flicker frequency from video images is not affected by the catalogues of combustion material and distance. In experiments, we adopted two kinds of flames, i. e. , fixed flame and movable flame. Many comparing and disturbing experiments were done and verified that the methods can be used as criteria for early fire detection.展开更多
文摘为提高船舶目标检测中图像拼接质量,本次针对传统拼接方法存在的问题:无法同时实现拼接图像画质以及结构相似度的双向目标,研究了一种新的舰船远程监控平台模糊视频高动态图像拼接方法。该方法主要分为三步骤,首先对待拼接的模糊视频高动态图像进行处理,包括图像去噪、图像分割、图像畸形矫正,然后在此基础上利用基于特征信息方法进行图像配准,主要包括图像特征提取、图像匹配等,最后采用直接平均算法实现图像融合,完成图像拼接。结果表明:与传统图像拼接方法相比,本方法操作下,图像峰值信噪比分别提高1.8 d B和2 d B,结构相似度分别提高10.8%和8.2%,证明了本方法的有效性和优越性。
基金Supported by " Experimental Scale Studies in Smoke Control Strategy in Large Linear Atria in HKSAR" (B Q372)
文摘In this paper, motion analysis methods based on the moment features and flicker frequency features for early fire flame from ordinary CCD video camera were proposed, and in order to describe the changing of flame and disturbance of non-flame phenomena further more, the average changing pixel number of the first-order moments of consecutive flames has been defined in the moment analysis as well. The first-order moments of all kinds of flames used in our experiments present irregularly flickering, and their average changing pixel numbers of first-order moments are greater than fire-like disturbances. For the analysis of flicker frequency of flame, which is extracted and calculated in spatial domain, and therefore it is computational simple and fast. The method of extracting flicker frequency from video images is not affected by the catalogues of combustion material and distance. In experiments, we adopted two kinds of flames, i. e. , fixed flame and movable flame. Many comparing and disturbing experiments were done and verified that the methods can be used as criteria for early fire detection.
