The calcifying cystic odontogenic tumour (CCOT) is a rare benign cystic neoplasm not infrequently associated with odontoma. This report documents a case of CCOT associated with compound odontoma arising in the anterior maxilla in a 25-year-old woman. Conventional radiographs showed a large calcified mass with poorly visualized radiolucent margins. The extent and condition of the internal struct...

This article proposes a new modified anisotropic diffusion scheme for automatic defect detection in radiographic films. The new diffusion method allows to enhance, to sharpen anomalies, and to smooth the background of the image. This new technique is based on the modification of the classical diffusion rule by using a nonlinear sigmoidal function. Experimental results are carried out on multipl...

The purpose of this investigation is to quantify and evaluate the diagnostic image quality dental panoramic radiography with without post-processing visualization. 72 photos were analyzed split into two groups: post processing image. Each picture was given a score based on subject's perception anatomical zone features, as well density contrast According these specifications, digital system that...

Introduction: Digital radiography possesses a wide dynamic range and has a major advantage in producing an acceptable image of diagnostic value even though overexposure occurs. Lumbar spine (LS) radiography is the most common examinations that gives high radiation dose to patients and accounts for the highest collective population dose of any conventional radiographic ...

In this paper, a defect grading method for digital radiographic images from CMOS x-ray linear array detector was put forward, which is based on a standard defect-grading comparison sample and a computer-aided defect interpretation method. A standard defect-grading comparison sample was designed and used to help measuring the distortion and magnification of the images, and to grade the defects i...

This paper describes a robust method for spinal vertebrae edge detection from biplanar X-ray radiographic images (lateral and antero-posterior). It uses anisotropic filtering and a Canny-Deriche edge detector applied locally and in a region of interest. The anatomical structure of interest in this work is the spinal area. Anisotropic filtering is applied so as to preserve edge structures while ...

After visual and optical testing (VT), the next method of nondestructive testing (NDT) most commonly employed in industry is radiographic testing. Also simply referred to as radiography, it is perhaps the most versatile of the nondestructive testing methods.[1] The basic radiographic process in use today is in large part still the same as it was when it was introduced in the late 1800s. Radiogr...

This paper is devoted to present and discuss a model that allows a local segmentation by using statistical information of a given image. It is based on Chan-Vese model, curve evolution, partial differential equations and binary level sets method. The proposed model uses the piecewise constant approximation of Chan-Vese model to compute Signed Pressure Force (SPF) function, this one attracts the...

This paper is devoted to present and discuss a model that allows a local segmentation by using statistical information of a given image. It is based on Chan-Vese model, curve evolution, partial differential equations and binary level sets method. The proposed model uses the piecewise constant approximation of Chan-Vese model to compute Signed Pressure Force (SPF) function, this one attracts the...

This paper presents a novel method of no-reference image quality assessment for JPEG encoded images by means of multiresolution analysis using Haar wavelet decomposition. The proposed method takes advantage of the fact that JPEG encoded images are usually contaminated with blockiness artifacts. Blockiness artifact is modeled as a particular edge structure that transforms into a different edge s...