Shadow Information Technology (IT) occurs when users develop systems outside of the central information technology department. It provides both benefits and risks. Users procuring shadow IT often do not consider integration with existing enterprise architecture, privacy and security protection, maintenance cost, and legal ramifications. Problems with shadow IT must often be resolved by central ...

We present a hybrid algorithm for rendering hard shadows accurately and efficiently. Our method combines the strengths of shadow maps and shadow volumes. We first use a shadow map to identify the pixels in the image that lie near shadow discontinuities. Then, we perform the shadow-volume computation only at these pixels to ensure accurate shadow edges. This approach simultaneously avoids the ed...

In urban areas, the presence of shadow in high resolution satellite images is caused a serious problem for the full exploitation of images. To solve the shadow problem in high resolution satellite images, this paper propose a new shadow detection and reconstruction algorithm. Mainly three stages are using in this paper shadow detection stage, training stage and shadow reconstruction stage. The ...

We present a review on rendering rigid shadows precisely and proficiently. Our review provides the details of all the existing methods for rendering shadows and the hybrid approaches. Hybrid approaches merge the two or more existing algorithms. The algorithm merges shadow map and shadow volume computation. Analysis of shadow volume, shadow map and projection algorithm is performed and is mentio...

We present a method for high quality soft shadows for area lights in cinematic lighting. The method is an extension of traditional shadow maps, so it has the advantage of image based shadow methods; the algorithm’s complexity is independent of geometric complexity. We introduce multilayer transparent shadow maps, which can be used to produce high quality soft shadows for scenes with extremely c...

We present Convolution Shadow Maps, a novel shadow representation that affords efficient arbitrary linear filtering of shadows. Traditional shadow mapping is inherently non-linear w.r.t. the stored depth values, due to the binary shadow test. We linearize the problem by approximating shadow test as a weighted summation of basis terms. We demonstrate the usefulness of this representation, and sh...

In the large-scale terrain scene rendering, because of the complexity of the shadow algorithm, the algorithm of the real-time shadow have not been able to achieve satisfactory rate. In this situation, this paper proposed a GPU-based real-time shadow algorithm. It can be used for generating real-time shadow effect in morphing terrain rendering. First of all, this method pre-processes terrain dat...