This realistic watercolor vector can be scaled to any size without loss of quality. The detailed painted circle shape has been isolated on a white background but would work as well on dark or colorful ...

Gradient abstract backgrounds of northern lights. aurora borealis sky. soft tender purple, green, pink and blue gradients for app, web design, webpages, banners, greeting cards. vector design. vector ...

Abstract: This paper presents a novel gradient vector flow calculation method and introduces the center position of initial contour line to segment target exactly. The method utilizes the center ...

This paper covers the concept of a conservative vector field, and its application in vector physics and Newtonian mechanics. Conservative vector fields are defined as the gradient of a scalar-valued ...

Introduction: A subset of the true optical flow can be extracted by constructing a vector field that represents image gradients and then tracking vectors in this vector field. This pseudo-flow (p-flow ...