Chanjira Sinthanayothin

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AIM To recognise automatically the main components of the fundus on digital colour images. METHODS The main features of a fundus retinal image were defined as the optic disc, fovea, and blood vessels. Methods are described for their automatic recognition and location. 112 retinal images were preprocessed via adaptive, local, contrast enhancement. The(More)
AIMS The aim was to develop an automated screening system to analyse digital colour retinal images for important features of non-proliferative diabetic retinopathy (NPDR). METHODS High performance pre-processing of the colour images was performed. Previously described automated image analysis systems were used to detect major landmarks of the retinal(More)
Purpose: The purpose is to develop an automatic computerized screening system to recognize automatically the main components of the retina, an important features of background diabetic retinopathy and classify the normal, abnormal and unknown retinal image. Methods: This paper has presented 4 main methods to succeed of retinal diagnosis. Firstly, the(More)
Diabetic retinopathy (DR) is a common retinal complication associated with diabetes. It is a major cause of blindness in middle as well as older age groups. Therefore early detection through regular screening and timely intervention will be highly beneficial in effectively controlling the progress of the disease. Since the ratio of people afflicted with the(More)
Mass-spring system has been used to describe elastically deformable models in computer graphics such as skin, textiles, and soft tissue. A mass-spring mesh composed of a network of masses and springs, in which each edge is spring. We apply mass-spring system to soft tissue deformation in 3D orthodontic simulation, the movement of which is evaluated using(More)
To conduct a feasibility study of computer-aided screening for diabetic retinopathy by developing a computerized program to automatically detect retinal changes from digital retinal images. The study was carried out in three steps. Step 1 was to collect baseline retinal image data of 600 eyes of normal subjects with normal fundi and data of 300 eyes of(More)
Dental implant is one of the most popular methods of tooth root replacement used in prosthetic dentistry. Computerize navigation system on a pre-surgical plan is offered to minimize potential risk of damage to critical anatomic structures of patients. Dental tool tip calibrating is basically an important procedure of intraoperative surgery to determine the(More)
This paper proposes PACS (picture archiving communication system) to manage and transfer information for dental field focusing on 2 main fields as follows. First application was to open digital imaging and communications in medicine (DICOM) files of patients inside the database via local area network (LAN) and hypertext transfer protocol [HTTP]. Second(More)
This paper presents the development of three-dimensional (3D) computer aided orthodontic software using Borland C++ Builderreg and OpenGL with the purpose of creating the 3D orthodontic treatment simulation. The method consists of 4 main steps as follows: the dental cast produced by 3D scanner in STL format was transformed from un-indexed data to an indexed(More)