Image segment based on grayscale level connectivity

The level-k connectivity was only mentioned by Braga-Neto et al. We extract the level-k connectivity component of target in FLIR image sequences to segment image. At first, we explain the new concept about the level-k connectivity. In this abstract, we just add some pertinent remarks to listing the topic of explanation. The first topic is: the grayscale level connectivity on complete lattice. In the first topic, we discuss three questions: (1) the connectivity based on complete lattice, (2) the level-k connectivity and (3) the operator based on the level-k connectivity. The second topic is: the experiment in FLIR image. In the second topic, we discuss FLIR image processing. Experimental results are given in a table in the full paper. These results indicate that using new operator raises the value of SNR. These results demonstrate the effectiveness and robustness of the operator for dim target detection in the clutter and noise background.