Abstract —Early detection and diagnosis of diseases are facilitated by medical imageprocessing methods. It is a strong tool aiding medical research and relatedclinical practices. An add on approach survey is done in this paper in the areaof medical image analysis for diagnosis of diseases in oral radiology usingdental x-rays in dentistry.
The interpretations of medical images rely hugelyon human involvement and the human perception of the details present init. The interpretation of the delicatefine details in various contrast situations present in a medical image isindeed a cumbersome task to assess. Typical radiographs obtained from a regularradiograph acquisition device may be of poor or average quality inrepresentation. Various standardized scientific tools have been designed byresearchers, scholars and software developers to address this type ofshortcomings in a medical radiograph. These are targeted to minimize thepossible human error in predicting the right diagnosis and treatment solely onthe basis the human visual perception. Feature extraction on focused area forthe information required, on an extracted tooth area in a digital dentalradiograph is highlighted in this feature of utmost support to a dentist for pre-diagnosisat an early stage.1. IntroductionImage processing includes several methods like enhancement,segmentation, region of interest detection, filtering methods, thresholdingtechnique and morphological operations.
The information from texture, shape,contours, etc is used in the classical image segmentation. Edge detection isused to find boundaries of objects inside an image. Image enhancementtechniques are used to restore the original image. Medical imagingtechnology has revolutionized the health care over the past three decades, aiding doctors todiagnose and improve patient outcomes. A fight against cancer is fought effectively using medicalimaging in its prevention, diagnosis and, treatment. An important advantage of digital dental radiography isits ability to process the image data, so that the information content of theimage is more accessible to the human visual system. Dentalprofessionals today are increasingly using digital dental x-rays for betterdetection, diagnosis, treatment and monitoring of oral conditions and diseases.Traditional x-ray films are replaced by the digital electronic sensors.
Thesesensors can produce enhanced computer images of intra oral structures andconditions. The aim of this systematicreview is to give an overview towards current dental image processing methodsbecause of their potential importance in the dental and forensic fields. Therefore,this paper is sectioned and sub sectioned as section 3.2 reviews the methodology a review of image enhancementmethods used on dental X-ray images. Section 3.3reviews various techniques usedfor image segmentation and feature extraction on dental radiographs.
Thissection also highlights the works done in forensic odontology using imagesegmentation. Section 3 concludes the present review.