The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Transmitting high-quality video via the Internet is a challenging problem in distributed diagnosis system. We propose a content-based video data preprocessing scheme, which is adaptive to the video data acquired during intraoperative monitoring and can cascade with essentially any video codec. IOM video is first decomposed into temporal wavelet subband frames and motion compensation is incorporated...
This paper describes a method of three-dimensional (3-D) optic disk reconstruction from a pair of stereo images. This is achieved through the implementation of various procedures that further enhance the accuracy including camera calibration, constraint-based combined registration, dense-depth recovery, and eye-optics inclusion. A combination of two registration methods is applied to precisely detect...
A new algorithm to detect the exact optic disk boundary, based on deformable model, is proposed in this paper. The energy function for deformation is defined as a combination of local energies. The proposed method modified the original snake technique in two aspects: clustering the contour points into edge-point group or uncertain-point group after each deformation, and updating the contour by variable...
In this work, we propose a wavelet-based technique for embedding medical data in a medical image. In the spectral domain, the patient data are embedded into the wavelet coefficients of the host image. A diagnostic distortion measure (DDM) has been defined to measure the visible distortions between the original image and the embedded image. The performance of the DDM has been compared with the standard...
The second heart sound, S2, is generally believed to be comprised of aortic (A2) and pulmonary (P2) components. Previously, the normalized splitting interval (NSI) between the A2 and P2 components has been shown to be proportional to the pulmonary artery pressure (PAP). A set of fully automated algorithms based on adaptive modeling of A2/P2 components using chirplets were developed to provide real-time...
Three dimensional (3-D) visualization of optic disk surface is very useful for clinical application. It allows clinicians to measure the disk parameters more accurately and thus make the diagnosis easier. This work describes an automated 3-D optic disk reconstruction method from a pair of stereo images for which efficient steps including sparse-image registration, and dense-depth recovery are used...
The purpose of this study is to evaluate mammoSPECT using a rotating 4-segment slant-hole (R4SSH) collimator compared to planar scintimammography (SM). Four pairs of R4SSH and parallel-hole collimators with the same spatial resolutions of 0.7 cm, 0.9 cm, 1.1 cm and 1.3 cm at 16.5 cm, 16.8 cm, 17.0 cm and 17.1 cm respectively, which are the distances to the centers of the common volume-of-view (CVOV)...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.