Showing papers by "Mitsuji Muneyasu published in 2007"
21 Sep 2007
TL;DR: The carotid artery calcification has brighter intensity compared to the neighborhood region and its fact is utilized in the proposed method and to compensate the bad contrast of the dental panoramic radiographs, the fuzzy image contrast enhancement and algebraic image operator are employed.
Abstract: This paper proposes a detection method for carotid artery calcification in dental panoramic radiographs. The existence of the carotid artery calcification as an index for arteriosclerosis attracts a great deal of attention. The carotid artery calcification has brighter intensity compared to the neighborhood region and its fact is utilized in the proposed method. To compensate the bad contrast of the dental panoramic radiographs, we also employ the fuzzy image contrast enhancement and algebraic image operator to the proposed method. From experimental results, the carotid artery calcification region can extract from several dental panoramic radiographs.
4 citations
01 Jul 2007
TL;DR: In this article, a new tracking method for a moving object based on phase only correlation (POC) is proposed, which can measure exactly displacement between the corresponding points of two images.
Abstract: This paper proposes a new tracking method for a moving object based on phase only correlation (POC). The POC method can measure exactly displacement between the corresponding points of two images. The proposed method applies the POC method to detecting and tracking the moving object. In the tracking of the moving object by an in-vehicle camera, it is difficult to use the techniques based on background difference or frame difference. The improvement of the detection accuracy is not also easy. To solve this problem, an initial point search method by the POC based calculation technique of motion vectors and a tracking method by using the coarse-to-fine search technique based on the POC method are proposed. By applying the proposed method to moving pictures taken by the in-vehicle camera, the good result for the tracking of the oncoming car in it is shown.
1 citations
Journal Article•
TL;DR: An initial point search method by the POC based calculation technique of motion vectors and a tracking method by using the coarse-to-fine search technique based on the P OC method are proposed and the good result for the tracking of the oncoming car in it is shown.
Abstract: This paper proposes a new tracking method for a moving object based on phase only correlation (POC). The POC method can measure exactly displacement between the corresponding points of two images. The proposed method applies the POC method to detecting and tracking the moving object. In the tracking of the moving object by an in-vehicle camera, it is difficult to use the techniques based on background difference or frame difference. The improvement of the detection accuracy is not also easy. To solve this problem, an initial point search method by the POC based calculation technique of motion vectors and a tracking method by using the coarse-to-fine search technique based on the POC method are proposed. By applying the proposed method to moving pictures taken by the in-vehicle camera, the good result for the tracking of the oncoming car in it is shown.
1 citations