Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userStudy of the influence of removing speckle noise on the segmentation of uterus ultrasonic images based on Active shape contour algorithm
دراسة تأثير استخلاص ضجيج البقع على تجزيء صور الرحم الطبية فوق السمعية باستخدام خوارزمية مخطط الشكل الفعال
1662
1 11
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
تقترح الدراسة طريقة جديدة لتجزيء صور الرحم فوق السمعية للحصول على صور الجنين منها و ذلك اعتماداً على عدة مراحل، تتضمن المرحلة الأولى عملية المعالجة المسبقة و التي يتم فيها إزالة ضجيج البقع من الصور فوق السمعية اعتماداً على الترشيح المتتالي من قبل مرشحي جابور و الوسيط. يلي هذه المرحلة تطبيق خوارزمية مخطط الشكل الفعال المستقلة عن الحواف لتجزيء صور الرحم. أما المرحلة الأخيرة فتمثل عملية المعالجة اللاحقة و فيها يتم تطبيق عدد من عمليات الهندسة الصورية(المورفولوجيا) للتخلص من المناطق غير المرغوبة و الحصول على المناطق الهامة فقط. تم اختبار النظام المصمم على قاعدة بيانات صور طبية فوق سمعية محملة من مركز الصور فوق السمعية الطبية ULTRASCAN CENTRE الموجود في مدينة Kaloor في الهند إذ تم تحميل الصور من موقع المركز على الانترنت. أظهرت الاختبارات العملية أن تقنية الترشيح المتتالي المقترحة قد حسنت أداء خوارزمية مخطط الشكل الفعال بشكل كبير بحيث تمكن النظام المقترح من تجزيء صور الرحم حتى بوجود ضجيج كبير على الصور.
The study suggests a new approach to segment the ultrasound uterus images to obtain the fetus region. The approach consists of three stages. The first includes the preprocessing in which the speckle noise is removed from the ultrasound images depending on sequential filtering of Gabor filter and median filter. Second, an improved active shape contour independent of edges is applied to segment the uterus images. The last stage is the post processing which depends on the morphological operation to eliminate the undesired region and obtain the region of interest (fetus). The designed system has been tested by means of medical database of ultrasound uterus images downloaded from the ULTRASCAN CENTRE site in Kaloor (India). The experimental tests show that the proposed sequential filtering technique improves the active shape contour algorithm performance significantly, so the system segment the uterus images correctly even in the presence of speckle noise.
References used
BENKESER P. JACKSON J. NICHOLS F. 1995 3d ultrasonic imaging of the structure and elasticity of the carotid bifurcation. Proc. IEEE Ultrasonics Symposium, 1419–1422
BOUMA C. ZUIDERVELD K. VIERGEVER M. A. 1995 Quantitative evaluation of semi-automated segmentation of intravascular ultrasound subtraction images, In Abstracts of the 11th Symposium on Echocardiology
CASELLES, V.; COLL, T.; DIBOS, F., 1993, A geometric model for active contours in image processing, Numerische Mathematik, V.66, 1-31
CASELLES, V. KIMMEL, R. SAPIRO, G., 1997 on geodesic active contours, Journal of Computer Vision, V.22, 61-79
GUSTAVO C. BOGDAN G. SARA G. DORIN C. 2008 Detection of Fetal Anatomies from Ultrasound Images using a Constrained Probabilistic Boosting Tree. IEEE TRANSACTIONS ON MEDICAL IMAGING, 1-13
rate research
Read More
In this paper, we
describe an algorithm to register the retinal images by employing a relatively
cross-correlation function. Pixel to pixel accuracy has been investigated and
evaluated among registered images by calculating the local cross-correla
tion
between extracted vessels profiles along tracked vessels after transforming
the images into alignment.
This paper proposes a new approach for the segmentation of the retina images to obtain the optic nerve and blood vessels regions. We used retinal images from DRIVE and STARE databases which include different situations like illumination variations, d
ifferent optic nerve positions (left, right and center). Illumination problem has been solved by preprocessing stage including image histogram-based illumination correction. Next, some morphological operations were used to filter the preprocessed image to obtain the ROI region, then, the center and radius of optic nerve were determined, and the optic nerve region was extracted from the original image. In blood vessels segmentation, we applied the illumination correction and median filtering.Then the closing, subtraction and morphological operations were done to get the blood vessels image which was thresholded and thinned to get the final blood vessels image.
Sweeteners are used as alternatives of Sugar because of their slow
absorption and incomplete metabolism in human body, which are positively
destinies in setting free small amount of calorie.
This research presents the influence of ultrasonic on th
e sorbitol synthesis,
starting from Glucose by implementing hydrogenation using Lithium
Aluminum Hydride. The result we have reached by using the ultrasonic as
compared with mechanical mixing or other method have lead us to two
conclusions:
The first was that we have obtained almost the same quantity of the sorbitol.
The second was that by using ultrasonic, micelles of colloid Aluminum
hydroxide were accumulated. This accumulation resulted in an easy separation
by purification, which eventually lead to a super pure sorbitol solution.
We hope that these results will be useful for the Crystallography science.
Vibration of Ultrasonic has used for scaling
and periodontal curettage, it is also has used for metal crown and
metal-ceramic crown removal, subsequently, using the tips whether for
scaling or removing crown, they will be in direct contact with th
is crown,
This research aimed to evaluate the surface of metal-ceramic crown
after exposure to Vibration of Ultrasonic tips.
Five mixtures of ordinary concrete of dolomite aggregates were
prepared by changing the water to cement ratio. Thirty six cubic
concrete samples were prepared for every mixture.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
