Quadrilateral Meshes for the Registration of Human Brain ImagesMarcelo SiqueiraTessa A SundaramSuneeta RamaswamiJames Gee
The planar homography is defined as the most general linear mapping of all the points contained within one quadrilateral to the points of another quadrilateral (Fig. 3). A planar homography was used to correct perspective distortions within the smartphone image. Fig. 3 An illustration of a homogr...
Reliefmodoffers an effortless way to create a 3D model from a 2D picture. It’s very similar to Bas Relief, one of the ancient sculpting methods that involve carving out the voids of a picture from a flat surface, leaving behind the artwork that seems to be raised above a solid backgrou...
We achieve this by clipping the sides of 3D quadrilaterals iteratively until it turns to 3D axis-aligned bounding boxes. Text deformation. In natural situations, not all text regions are flat planes, such as the surface of the bottle and the clothes, where text instaces need to be ...
“j” represents the index of the j.sup.th object detected in the current image and is not equal to i, object O.sub.i is assumed to be closer to the camera than O.sub.j. To the extent the optical flow algorithm outputs a quadrilateral, not a position, the center point of the ...
Example of an exact mask (a) of solar cells estimated using the proposed approach and a quadrilateral mask (b) determined from the exact mask. The latter is used for comparison against the method of Sovetkin and Steland [86]. Both masks are shown as color overlays. Different colors denote...
The AF approach involved the use what is known as a “light slab”, which basically can be described as a convex quadrilateral object composed of two main planes (u, v), and (s, t). In a two-plane parameterization, each ray in space can be represented by one point Pi = (u, v,...
aIn the numerical simulations of DTMB5512, 30×60 panels are generated on free surface. Hull surface are divided into 8 logical quadrilaterals, and 1000 panels are used. Figure 2 shows the sketch of panel arrangement of DTMB5512 在DTMB5512的数值仿真, 30×60盘区在自由表面引起。 船身表面被划...
For instance, the spatial analysis module 108 detects a shape (e.g., a quadrilateral, circle, triangle, star, etc.) by determining mean distances between the shape's edge pixels and edge pixels of a superimposed image of the closest shape associated with the detected shape. Further, the ...
There are mainly two ways to implement the foregoing rendering and displaying efficiently: using pixel-shaders for newer graphics hardware, or vertex arrays for fixed function graphics hardware. For the pixel shader implementation a single screen filling quadrilateral (or quad) is rendered. The pixel...