Panrasee Ritthipravat

Learn More
PURPOSE This paper proposes a new image segmentation technique for identifying nasopharyngeal tumor regions in CT images. The technique is modified from the seeded region growing (SRG) approach that is simple but sensitive to image intensity of the initial seed. METHODS CT images of patients with nasopharyngeal carcinoma (NPC) were collected from(More)
In this paper, path planning of a mobile robot by using a modified Hopfield neural network is studied. An area, which excludes obstacles and allows gradually changing of activation level of neurons from a starting point to a goal, is derived. Path can be constructed in this area by searching the next highest activated neuron. Even though asymmetric weight(More)
In this paper, dynamic path planning of two mobile robots using a modified Hopfield neural network is studied. An area which excludes obstacles and allows gradually changing of activation level of neurons is derived in each step. Next moving step can be determined by searching the next highest activated neuron. By learning repeatedly, the steps will be(More)