公开(公告)号：US20140071129A1

公开(公告)日：2014-03-13

申请号：US13730320

申请日：2012-12-28

Applicant: NVIDIA CORPORATION

Inventor： Jaakko Lehtinen ,  Timo Aila ,  Samuli Laine ,  Tero Karras ,  David Luebke

IPC: G06T15/50

CPC classification number: G06T15/50 ,  G06T15/506

Abstract: A method of generating an image. The method includes simulating a presence of at least one light source within a virtualized three dimensional space. Within the virtualized three dimensional space, a light sensing plane is defined. The light sensing plane includes a matrix of a number of pixels to be displayed on a display screen. The method further includes using a light transport procedure, computing a gradient value for each pixel of the matrix to produce a number of gradient values. The gradient computation involves selecting a plurality of light path pairs that contribute to a pixel wherein the selection is biased towards selection of more light paths that pass through pixels having larger gradient values. The plurality of gradient values are converted to a plurality of light intensity values which represent the image.

Abstract translation: 一种产生图像的方法。 该方法包括模拟虚拟三维空间内的至少一个光源的存在。 在虚拟三维空间内，定义光感测平面。 光检测平面包括要在显示屏上显示的多个像素的矩阵。 该方法还包括使用光传输过程，计算矩阵的每个像素的梯度值以产生多个梯度值。 梯度计算涉及选择有助于像素的多个光路对，其中选择偏向选择通过具有较大梯度值的像素的更多光路径。 将多个梯度值转换为表示图像的多个光强度值。