Given a specific image processing task and an image, its effectiveness is influenced by proximity driven properties captured in the image scan. One could exploit this effect and maximize the performance by adapting the scan and/or suitably adjusting the original operator. This two part sequel explores the balance between the effort required in scan adaptation and operator reformulation. The def...

This is colour image encryption method where image is encrypted by specific rule that is rearrangement of image pixels. In this paper, we present colour Image encryption and decryption by using partition and scanning pattern which is related to scan approach. SCAN language is based on spatial accessing methodology that can generate a wide range of scanning paths. This paper presents a over view...

Background: Prospectively electrocardiography (ECG)-triggered high-pitch spiral coronary computed tomography angiography (CCTA) is a unique scan mode for dual-source CT (DSCT). Our reports aim to compare image quality and radiation dose of CCTA using high-pitch spiral or sequential acquisition mode in patients with low and stable heart rates. Materials and Methods: Patients with low and stable ...

To perform in vivo animal single photon emission computed tomography imaging on a stationary detector gantry, we introduced a hybrid rotation-translation (HRT) tomographic scan, a combination of translational and limited angle rotational movements of the image object, to minimize gravity-induced animal motion. To quantitatively assess the performance of ten HRT scan schemes and the conventional...

This is Medical image encryption method where Medical image is encrypted by specific rule that is rearrangement of image pixels. In this paper, we present Medical Image encryption and decryption by two dimensional scan Approach. Scan language is based on spatial accessing methodology that can generate a wide range of scanning paths. This paper presents a over view of encryption and decryption a...

Previous methods for optimizing the scan times for PET transmission and emission scans under a total scan time constraint were based on linear non-statistical methods and used noise equivalent counts (NEC) criteria. The scan times determined by NEC analysis may be suboptimal when nonlinear statistical image reconstruction methods are used. For statistical image reconstruction, the predicted var...

introduction in ct imaging, metallic implants inside the tissues cause metal artifact that reduce the quality of image for diagnosis. in order to reduce the effect of this artifact, a new method with more appropriate results has been presented in this research work. materials and methods the presented method comprised of following steps: a) image enhancement and metal areas extraction, b) sinog...

Events recorded in urban areas are often confined by the micro-scale geography of street networks, yet existing spatial–analytical methods do not usually account for shortest-path distance networks. We propose space–time NetScan, a new spatial–temporal analytical method with improved accuracy detecting patterns concentrations across space and time. It extends notion scan-statistic-type search w...

In this work, we present a comparison between two techniques of image compression. In the first case, the image is divided in blocks which are collected according to zig-zag scan. In the second one, we apply the Fast Cosine Transform to the image, and then the transformed image is divided in blocks which are collected according to zig-zag scan too. Later, in both cases, the Karhunen-Loève trans...