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KMID : 0372919980190060571
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Journal of Biomedical Engineering Research
1998 Volume.19 No. 6 p.571 ~ p.575
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A Study on the Generation of Ultrasonic Binary Image for Image Segmentation
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Choi Heung-Ho
Yuk In-Su
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Abstract
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One of the most significant features of diagnostic ultrasonic instruments is to provide real time information of the soft tissues movements. Echocardiogram has been widely used for diagnosis of heart diseases since it is able to show real time images of heart valves and walls. However, the currently used ultrasonic images are deteriorated due to presence of speckle noises and image dropout. Therefore, it is very important to develop a new technique which can enhance ultrasonic images. In this study, a technique which extracts enhanced binary images in echocardiograms was proposed. For this purpose, a digital moving image file was made from analog echocardiogram, then it was stored as 8-bit gray-level for each frame. For an efficient image processing, the region containing the heat septum and tricuspid valve was selected as the region of interest(ROI). Image enhancement filters and morphology filters were used to reduce speckle noises in the images. The proposed procedure in this paper resulted in binary images with enhanced contour compared to those form the conventional threshold technique and original image processing technique which can be further implemented for the quantitative analysis of the left ventricular wall motion in echocardiogram by easy detection of the heart wall contours.
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KEYWORD
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Binary image, Echocardiogram, Speckle noise, ROI(region of interest), Image enhancement filter, Morphology filter
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