In this paper, we present an efficient image alignment and enhancement method for multi-sensor images. The shape of the object captured in a multisensor images can be determined by comparing variability of contrast using corresponding edges across multi-sensor image. Using this cue, we construct a robust feature descriptor based on the magnitudes of the oriented edges. Our proposed method enabl...

* Department of Gynaecology, AZ Sint-Maarten Duffel-Mechelen, BE [email protected]; [email protected]; [email protected] † Department of Radiology, AZ Sint-Maarten Duffel-Mechelen, BE [email protected]; [email protected] ‡ Department of Radiology, Antwerp University Hospital, Wilrijkstraat 10, B-2650 Edegem, BE § University of Ghent, Faculty of Medicine and Heal...

In this paper, we present a fully automatic, fast and accurate deformable registration technique. This technique deals with free-form deformation. It minimizes an energy functional that combines both similarity and smoothness measures. By using calculus of variations, the minimization problem was represented as a set of nonlinear elliptic partial differential equations (PDEs). A Gauss-Seidel fi...

Automatic road extraction from aerial images can be very helpful in traffic control and vehicle guidance systems. Most of the road detection approaches are based on image segmentation algorithms. Color-based segmentation is very sensitive to light changes and consequently the change of weather condition affects the recognition rate of road detection systems. In order to reduce the light change ...

in order to distinguish between benign and malignant types of pigmented skin lesions, computerized procedures have been developed for images taken by different equipment that the most available one of them is conventional digital cameras. in this research, a new procedure to detect malignant melanoma from benign pigmented lesions using macroscopic images is presented. the images are taken by co...

first Professor of Diagnostic Radiology was appointed in 1917 at the Karolinska Hospital in Stockholm, and the second Professor was not appointed until 1931, in Uppsala. In this country, the first full-time Professor of Diagnostic Radiology to be appointed to an undergraduate teaching hospital was in the University of Wales at Cardiff in 1965, and it gives me a vicarious pleasure to record that...

Automatic road extraction from aerial images can be very helpful in traffic control and vehicle guidance systems. Most of the road detection approaches are based on image segmentation algorithms. Color-based segmentation is very sensitive to light changes and consequently the change of weather condition affects the recognition rate of road detection systems. In order to reduce the light change ...

Reconstruction of an image (or shape or wavefront) from measurements of the derivatives of the image in two orthogonal directions is a common problem. We demonstrate how a particular reconstructor, commonly referred to as the Fried algorithm, can be used with megapixel derivative images to recover the original image. Large datasets are handled by breaking the derivative images into smaller tile...

Video panoramic image stitching is extremely time-consuming among other challenges. We present a new algorithm: (i) Improved, self-adaptive selection of Harris corners. The successful stitching relies heavily on the accuracy of corner selection. We fragment each image into numerous regions and select corners within each region according to the normalized variance of region grayscales. Such a se...