Most existing watermarking techniques embed watermarks into the entire image without taking the image content into account. For many applications, a certain portion of an image is more important than the other regions, which is often called the region of interest (ROI). In this work, we develop two wavelet-based watermarking schemes which exploit both frequencyand spatial-domain information to ...

Success of visual tracking typically relies on the ability to process visual information su ciently fast. Often a dynamic systemmodel of target motion is used to estimate the target location within the image and a region of interest (ROI) is used to reduce the amount of image data processing. This has proven e ective, provided the ROI is su ciently large to detect the target and su ciently smal...

Every digital image has some spatial regions that are more important in some sense than others are. To provide higher reconstruction quality for the important region, Region of Interest (ROI) based compression methods are developed. In image compression, ROI coding allows to recover the ROI earlier than the rest of the image. JPEG2000 is an international standard for still image compression and...

Regions Of Interest (ROI) image coding is one of the most significant features in JPEG2000 for network applications. In this paper, a new approach for ROI coding so-call Up-Down Bitplanes Shift (UDBShift) is presented. This new method separates all bitplanes into three parts: Important Significant Bitplanes (ISB), General Significant Bitplanes (GSB) and Least Significant Bitplanes (LSB). The ce...

Amyloid PET is useful for early and/or differential diagnosis of Alzheimer's disease (AD). Quantification of amyloid deposition using PET has been employed to improve diagnosis and to monitor AD therapy, particularly in research. Although MRI is often used for segmentation of gray matter and for spatial normalization into standard Montreal Neurological Institute (MNI) space where region-of-inte...

This paper presents an approach for an Enhanced Image Compression Method using Optimal sub-band Shift based SPIHT (Set partitioning in Hierarchal Trees)Algorithm. This is based on the progressive image compression algorithm, SPIHT which is an extension of Shapiro's embedded Zero tree Wavelet Algorithm. The proposed Optimal Sub-band Shift (OSS) Algorithm overcomes the difficulty of Embedded zero...

The purpose of this study was to develop a new method for automated mass detection in digital mammographic images using mass shape pattern. Masses were detected using a two steps process. First, the pixels in the mammogram images were scanned in 8 directions, and regions of interest (ROI) were identified using various thresholds. Then, a mass shape pattern was used to categorize the ROI as true...

The most frequent ocular adnexal tumors and simulating lesions are lymphoproliferative disorders (LPDs), including malignant lymphomas and orbital inflammation with lymphoid hyperplasia or infiltration. IgG4-related orbital inflammation (IgG4-ROI) often involves lacrimal glands and other orbital tissues and is an important differential diagnosis. The present study evaluated clinical aspects of ...

Objective: To compare the return-on-investment (ROI) of an integrated practice model versus a "hub and spoke" practice model of pharmacist provided medication therapy management (MTM). Methods: A cohort retrospective analysis of MTM claims billed in 76 pharmacies in North Carolina in the 2010 “hub and spoke” practice model and the 2012 “integrated” practice model were analyzed to calculate the ...

In single-photon emission computed tomography (SPECT), projection data can be truncated when the camera's field of view is smaller than the object to be imaged. Using truncated projections to reconstruct a region of interest (ROI) is a reality we must face if small detectors are used. The truncated data result in an underdetermined system of imaging equations, which may lead to non-unique solut...