公开(公告)号：US20140132640A1

公开(公告)日：2014-05-15

申请号：US13837318

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Abhinav SHARMA ,  Saumitra Mohan Das ,  Chandrakant Mehta

IPC: G06T3/40

CPC classification number: G06T3/40 ,  G01C21/206 ,  G09B29/005

Abstract: A computer-implemented method of auto-scaling an indoor map includes receiving an unsealed electronic map that shows a floor plan of a building and creating control points on the unsealed electronic map. Each of control points includes an absolute coordinate pair and a corresponding local coordinate pair. The method also includes calculating a primary scaling factor based on the control points. The electronic map is then auto-scaled using the primary scaling factor to generate a scaled electronic map that shows the floor plan of the building.

Abstract translation: 一种用于自动缩放室内地图的计算机实现方法包括：接收显示建筑物平面图的未密封电子地图，并在未密封的电子地图上创建控制点。 每个控制点包括绝对坐标对和相应的局部坐标对。 该方法还包括基于控制点计算主缩放因子。 然后使用主缩放因子自动调整电子地图，以生成显示建筑物平面图的缩放电子地图。

公开(公告)号：US20140153789A1

公开(公告)日：2014-06-05

申请号：US13773409

申请日：2013-02-21

Applicant: QUALCOMM INCORPORATED

Inventor： Abhinav SHARMA ,  Chandrakant Mehta ,  Aravindkumar Ilangovan ,  Saumitra Mohan Das

IPC: G06K9/00

CPC classification number: G06K9/00637 ,  G01C21/206 ,  G06K9/00476 ,  G06K9/4604 ,  G06T7/12 ,  G06T2207/30184 ,  G09B29/106

Abstract: A computer-implemented method for detecting a boundary of a building from an indoor map includes providing an electronic raster image of the indoor map. A floor plan included in the map is a first color and a background of the image is a second color. The method includes scanning the image a first time in a plurality of directions and coloring pixels of the image a third color as they are scanned the first time until a pixel is detected that is not the second color. Then the image is scanned a second time in at least two directions. The second scan includes marking a pixel a fourth color for each third color to non-third color and each non-third color to third color transition. The resultant pixels of the fourth color represent the boundary of the building.

Abstract translation: 用于从室内地图检测建筑物的边界的计算机实现的方法包括提供室内地图的电子光栅图像。 地图中包含的平面图是第一种颜色，图像的背景是第二种颜色。 该方法包括在多个方向上第一次扫描图像，并且在第一次扫描图像时将第三颜色的像素着色，直到检测到不是第二颜色的像素。 然后在至少两个方向上第二次扫描图像。 第二扫描包括将每个第三颜色的第四颜色标记为非第三颜色和每个非第三颜色到第三颜色转换的像素。 第四色的合成像素代表建筑物的边界。