公开(公告)号：US06301382B1

公开(公告)日：2001-10-09

申请号：US08870940

申请日：1997-06-06

申请人： Alvy Ray Smith ,  James F. Blinn

发明人： Alvy Ray Smith ,  James F. Blinn

IPC分类号： G06K900

CPC分类号： H04N9/75 ,  G06T7/11 ,  G06T7/194 ,  H04N5/275

摘要： A method for pulling (extracting) a matte of an image of a foreground object from a composite image, using a computer. An image of the foreground object is recorded over at least two backgrounds having arbitrarily different coloring. Each point of one background must have a color that is different than the color of a corresponding point in the other backgrounds. The images may be recorded with an analog camera and digitized with a scanner or recorded with a digital camera. Images should be registered during recording and digitization to eliminate misalignment of corresponding points in each recorded image. A triangulation of corresponding points of each recorded image is performed so that an alpha value (opacity) and a set of color coordinates for each point of an uncomposited image of the foreground object may be determined using either a difference of sums technique or a least squares technique. To facilitate the triangulation, images are recorded of each background alone, without the foreground object. The lighting and distances between the camera and object, and between the object and backgrounds should remain constant during the image recording process.

摘要翻译： 一种使用计算机从合成图像中拉出（提取）前景物体的图像的无光泽的方法。 在具有任意不同着色的至少两个背景上记录前景物体的图像。 一个背景的每个点必须具有与其他背景中相应点的颜色不同的颜色。 可以用模拟摄像机记录图像并用扫描仪数字化或用数码相机记录。 应在记录和数字化过程中注册图像，以消除每个记录图像中相应点的未对准。 执行每个记录图像的对应点的三角测量，使得可以使用和技术或最小二乘法的差异来确定前景对象的未合成图像的每个点的α值（不透明度）和一组颜色坐标 技术。 为了方便三角测量，单独记录每个背景的图像，没有前景对象。 在图像记录过程中，照相机和物体之间以及对象和背景之间的照明和距离应保持不变。

公开(公告)号：US07148907B2

公开(公告)日：2006-12-12

申请号：US10891674

申请日：2004-07-15

申请人： Alvy Ray Smith ,  John Bradstreet ,  Jonathan Edgar Fay ,  Ajai Sehgal ,  Tanuja Abhay Joshi ,  John Fitzgerald Bronskill ,  Daniel Gwozdz ,  Steven Andrew Cover ,  Nicholas John Clay ,  Edward W. Connell

发明人： Alvy Ray Smith ,  John Bradstreet ,  Jonathan Edgar Fay ,  Ajai Sehgal ,  Tanuja Abhay Joshi ,  John Fitzgerald Bronskill ,  Daniel Gwozdz ,  Steven Andrew Cover ,  Nicholas John Clay ,  Edward W. Connell

IPC分类号： G09G5/377

CPC分类号： G06T17/00 ,  G06T11/60 ,  G06T19/20 ,  G06T2210/32 ,  G06T2219/2004 ,  G06T2219/2016

摘要： An image processing application employs the concept of integral pre-multiplied alpha channel, and combines the techniques of multi-resolution representation, graph-structured representation, and automatic and intelligent data type conversion in order to permit a computer user to mix and manipulate both raster and vector based images in a single user interface while remaining unaware of the different data types underlying the images.

摘要翻译： 图像处理应用程序采用集成预乘法alpha通道的概念，并结合了多分辨率表示，图形结构表示和自动和智能数据类型转换的技术，以允许计算机用户混合和操纵光栅 和基于矢量的图像在单个用户界面，同时仍然不知道基于图像的不同数据类型。

公开(公告)号：US06870545B1

公开(公告)日：2005-03-22

申请号：US09361475

申请日：1999-07-26

申请人： Alvy Ray Smith ,  John Bradstreet ,  Jonathan Edgar Fay ,  Ajai Sehgal ,  Tanuja Abhay Joshi ,  John Fitzgerald Bronskill ,  Daniel Gwozdz ,  Steven Andrew Cover ,  Nicholas John Clay ,  Edward W. Connell

发明人： Alvy Ray Smith ,  John Bradstreet ,  Jonathan Edgar Fay ,  Ajai Sehgal ,  Tanuja Abhay Joshi ,  John Fitzgerald Bronskill ,  Daniel Gwozdz ,  Steven Andrew Cover ,  Nicholas John Clay ,  Edward W. Connell

IPC分类号： G06T17/40 ,  G09G5/22 ,  G09G5/30

CPC分类号： G06T17/00 ,  G06T11/60 ,  G06T19/20 ,  G06T2210/32 ,  G06T2219/2004 ,  G06T2219/2016

摘要： An image processing application employs the concept of integral pre-multiplied alpha channel, and combines the techniques of multi-resolution representation, graph-structured representation, and automatic and intelligent data type conversion in order to permit a computer user to mix and manipulate both raster and vector based images in a single user interface while remaining unaware of the different data types underlying the images.

摘要翻译： 图像处理应用程序采用集成预乘法alpha通道的概念，并结合了多分辨率表示，图形结构表示和自动和智能数据类型转换的技术，以允许计算机用户混合和操纵光栅 和基于矢量的图像在单个用户界面，同时仍然不知道基于图像的不同数据类型。