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In the field of computer realistic graphics, shadow is helpful to improve image realism as well as provide some visual cues about information of scenes. Shadow mapping, an image-based shadow generating approach, has been incorporated into graphics hardware due to its simplicity and flexibility. At present, many variations of the method have been proposed to improve the efficiency and performance of...
Taking the famous forced Duffing equation as an example, we in this paper introduce how to render chaotic attractor spectrum of ordinary differential dynamic system based on graphic modelling and numerical simulation methods. The basic non-linear theory, such as Melnikov's method, is first employed to analyze the characters of Duffing equation. Then, Simumlink based technology is used to graphically...
Shadow is always being one of the most attractive subjects because of its important role in the field of computer realistic graphics. In this paper, we survey two commonly used types of shadow rendering algorithms: projection shadows and shadow volumes. The basic ideas underlying the two types of algorithms are introduced and their characters are discussed in details. Further, we trace the technical...
It is very important to research non-linear ordinary differential dynamic systems (DDS) by using numerical and visualizing methods. In this paper, taking the famous Duffing's equation as an example, we introduce some visualization skills for visualizing the non-linear DDS based on the Simulink platform. We present a set of rendering methods for phase diagram, Poincare??'s mapping, bifurcation graph,...
In this paper, a novel algorithm to synthesize large-scale virtual terrain from a set of images is presented based on digital image processing technologies and radial weighted blending method. The algorithm first creates standardized terrain-blocks from the images, and then smoothes the blocks by employing fast Fourier transform (FFT) and butter worth low-pass filter. A radial-weighted defined on...
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