Automatic tooth detection of intraoral radiographs shows progressively importance in massive forensic verification. Since intraoral radiographs acquired from small oral cavity reveal great variation of intensity and distortion of structure morphology, automatic tooth detection poses a huge challenge. Enhancement methods may not effectively augment informative grayscale gradient. We proposed an ...

BACKGROUND Mammography is essential for early diagnosis of breast cancer, which is the most common type of cancer in females that is associated with a high mortality rate. We investigated whether evaluation of the grayscale inverted images of mammograms would aid in increasing the diagnostic sensitivity of the mammographic imaging technique. METHODS Our study included 636 mammograms of 159 wo...

The objective of histologic techniques is to stain the subject with high specificity and high visibility. Visibility depends on the microscope's resolution and contrast and on the microscopist's skill at optimizing the microscope's image. It also depends on histotechnological factors, which include specificity and differentiation of the stain, density of background staining (particularly in sil...

The detailed performance comparison of four orthogonal transforms for grayscale image colorization using Thepade’s Transform Error Vector Rotation(TTEVR) algorithm is done here with five different color pallet sizes. The Thepade’s transform error vector rotation algorithms use binary numbers represented by four error vector sequences (Haar, Cosine, Slant & Hartley). The proposed technique uses ...

The process of transforming a color image with three channels to a single channel grayscale image is called decolorization, which will unavoidably accompany with the information loss. In this paper, we propose a method to obtain a grayscale image which best preserves the global saliency of the color image. First, we convert the color image to the YUV color space, which separates the luminance a...

Granulometries are morphological image analysis tools that are particularly useful for estimating object sizes in binary and grayscale images, or for characterizing textures based on their pattern spectra (i.e., granulometric curves). Though granulometric information is typically extracted globally for an image or a collection of images, local granulometries can also be useful for such applicat...