公开(公告)号：KR1020050054730A

公开(公告)日：2005-06-10

申请号：KR1020030088248

申请日：2003-12-05

Applicant: 한국전자통신연구원

Inventor： 표순형 ,  김성예 ,  김해동 ,  최병태

IPC: G06T15/50

CPC classification number: G06T15/80 ,  G06T7/514 ,  G06T7/90

Abstract: 본 발명은 HDR(High Dynamic Range) 영상으로부터 조명 정보를 추출하고 이에 색온도(Color Temperature) 변화를 반영하여 삼차원 객체를 렌더링하는 일련의 쉐이더(Shader)들에 관한 것이다.
본 발명의 색온도 조정 기능을 갖춘 HDR 영상 기반 쉐이더는, HDR 영상을 물체의 표면에 직접 반영하여 표현하는 HDRI 기반 표면 쉐이더와, 광원에 반영된 HDR 정보를 상용 렌더링 S/W의 전역 조영(Global Illumination) 기능과 함께 사용하여 특정 영역에서 조명 역할을 하는 HDRI 기반 광원 쉐이더와, HDR 영상의 조명 정보를 직사광(Directional Light)으로 근사해 환경을 렌더링하는 HDRI 근사 광원 쉐이더로 구성된다.

公开(公告)号：KR100436815B1

公开(公告)日：2004-06-23

申请号：KR1020010084214

申请日：2001-12-24

Applicant: 한국전자통신연구원

Inventor： 박태준 ,  표순형 ,  추창우 ,  최병태

IPC: G06T17/10

CPC classification number: G06T15/005

Abstract: The present invention relates to a system and method for operation optimization in a hardware graphics accelerator for real-time rendering, which optimizes operation number or sequence in the hardware graphics accelerator so as to improve the display speed of three-dimensional objects on a computer screen when the three-dimensional objects are displayed with the hardware graphics accelerator. The invention enables a high screen display speed by analyzing material properties of the 3-D objects prior to screen display and grouping triangles composing the 3-D objects according to the same material property to produce triangle groups as many as the material properties; sorting and managing the triangles in each of the groups according to the distance from a camera; and extracting one triangle most distanced from the camera from the each of the groups at the point of screen display and finally selecting one triangle most distanced from the extracted triangles and outputting the same, in which the triangles are so controlled that another triangle extracted from the same group as the selected triangle is continuously outputted unless the another triangle does not overlap with the triangle extracted from other group even after the selected triangle is displayed. Effective display state is maintained due to distance control from the camera and the state variation is minimized so that a high-speed display is enabled using the hardware graphics accelerator.

Abstract translation: 硬件图形加速器中的操作优化系统和方法技术领域本发明涉及用于实时渲染的硬件图形加速器中的操作优化的系统和方法，其优化硬件图形加速器中的操作数或序列以便提高计算机屏幕上的三维对象的显示速度 当用硬件图形加速器显示三维物体时。 本发明通过在屏幕显示之前分析三维物体的材料属性并根据相同的材料属性对组成三维物体的三角形进行分组以产生与材料属性一样多的三角形组，从而实现高屏幕显示速度; 根据距相机的距离对每个组中的三角形进行排序和管理; 并在屏幕显示点处从每个组中提取离照相机最远的一个三角形，并最终选择离提取的三角形最远的一个三角形并输出该三角形，其中三角形被如此控制以使得从三角形中提取的另一个三角形 即使在显示所选三角形之后，除非另一个三角形与从其他组提取的三角形不重叠，否则连续输出与所选三角形相同的组。 由于距离摄像头的距离控制，有效显示状态得以保持，并且状态变化最小化，因此使用硬件图形加速器可以启用高速显示。