公开(公告)号：US20140347383A1

公开(公告)日：2014-11-27

申请号：US14456872

申请日：2014-08-11

Applicant: GOOGLE INC.

Inventor： Brian Cornell ,  James Darpinian ,  Daniel Otero ,  Jennifer Maurer

IPC: G06T11/00

CPC classification number: G06T11/001 ,  G01C21/367 ,  G06T2210/36 ,  G08G1/0969

Abstract: A viewing window of a map surface is determined, at a certain zoom level corresponding to the magnification of the map surface. A first set of style parameters for applying to a feature of the map surface, where the feature is described in a vector format using several interconnected vertices, is determined. The first set of style parameters corresponds to a first zoom level of the viewing window, and the first zoom level corresponds to a first magnification. A second set of style parameters for the feature is also determined, where the second set of style parameters corresponds to a second zoom level of the viewing window, and where the second zoom level corresponds to a second magnification. A third set of style parameters for displaying the feature is determined by interpolating between the first set of style parameters and the second set of style parameters.

Abstract translation: 在与地图表面的放大率对应的特定缩放级别处确定地图表面的观看窗口。 确定用于应用于地图表面的特征的第一组样式参数，其中使用若干相互连接的顶点以矢量格式描述特征。 第一组样式参数对应于观看窗口的第一缩放级别，并且第一缩放级别对应于第一放大率。 还确定用于特征的第二组样式参数，其中第二组样式参数对应于观看窗口的第二缩放级别，并且其中第二缩放级别对应于第二放大率。 通过在第一组样式参数和第二组样式参数之间进行插值来确定用于显示特征的第三组样式参数。

公开(公告)号：US08803901B1

公开(公告)日：2014-08-12

申请号：US13625722

申请日：2012-09-24

Applicant: Google Inc.

Inventor： Brian Cornell ,  James Darpinian ,  Daniel Otero ,  Jennifer Maurer

IPC: G09G5/00

CPC classification number: G06T11/001 ,  G01C21/367 ,  G06T2210/36 ,  G08G1/0969

Abstract: A graphics or image rendering system, such as a map image rendering system, may receive map data associated with a set of zoom levels, where the map data includes style attribute data corresponding to various features of a map surface at corresponding zoom levels. The system may interpolate at least some of the style parameter values from the received map data to provide style parameter values over a range of zoom levels.

Abstract translation: 诸如地图图像呈现系统的图形或图像呈现系统可以接收与一组缩放级别相关联的地图数据，其中地图数据包括对应于对应缩放级别的地图表面的各种特征的风格属性数据。 该系统可以从所接收的地图数据内插至少一些样式参数值，以在缩放级别的范围上提供样式参数值。

公开(公告)号：US09396508B2

公开(公告)日：2016-07-19

申请号：US13895310

申请日：2013-05-15

Applicant: GOOGLE INC.

Inventor： Daniel Otero ,  Nicholas Lee ,  James Darpinian ,  Jennifer Maurer

IPC: G09G5/30 ,  G06T1/00 ,  G06T9/00 ,  G01C21/36

CPC classification number: G06T1/00 ,  G01C21/3667 ,  G06T9/00

Abstract: To provide map data for rendering map images corresponding to a selected geographic region at a client device, a map server generates a set of base map tiles having vector descriptors, each of which indicates a geometry of a respective map element, in accordance with a non-raster format for rendering a first map image. The map server, at some point, provides the base map tiles to the client device. Upon receiving an indication that a specific map image for the selected geographic region is to be rendered at the client device, the map server further generates a set of difference map tiles that indicate changes to be made to the set of base map tiles and sends the difference map tiles to the client device for use, along with the set of base map tiles, in rendering the requested specific map image.

Abstract translation: 为了提供用于在客户端设备处渲染对应于所选择的地理区域的地图图像的地图数据，地图服务器生成具有向量描述符的一组基本地图瓦片，每个基地块瓦片根据非 - 用于渲染第一张地图图像的格式。 地图服务器在某些时候向客户端设备提供基本地图图块。 在接收到在客户端设备处呈现所选择的地理区域的特定地图图像的指示时，地图服务器进一步生成一组差异地图块，其指示将对该组基础地图块进行改变，并发送 将不同的地图图块与客户端设备一起使用，以及一组基础地图图块，以呈现所请求的特定地图图像。

公开(公告)号：US20140340421A1

公开(公告)日：2014-11-20

申请号：US14277440

申请日：2014-05-14

Applicant: GOOGLE INC.

Inventor： Daniel Otero ,  Brian Cornell ,  Jennifer Maurer ,  James Darpinian

IPC: G06T11/00

CPC classification number: G06T11/60 ,  G01C21/367 ,  G06T11/20 ,  G06T2210/08

Abstract: To provide map data for rendering map images corresponding to a selected geographic region at a client device, a map server generates a set of base map tiles having vector descriptors, each of which indicates a geometry of a respective map element, in accordance with a non-raster format for rendering a first map image. The map server, at some point, provides the base map tiles to the client device. Upon receiving an indication that a specific map image for the selected geographic region is to be rendered at the client device, the map server further generates a set of difference map tiles that indicate changes to be made to the set of base map tiles and sends the difference map tiles to the client device for use, along with the set of base map tiles, in rendering the requested specific map image. The client device renders the new map view defined by the difference map tiles without needing to again pre-process all of the features or elements defined in the base map tiles, which makes the rendering of the new map view defined by the difference map tiles faster and more efficient in terms of processing power requirements.

Abstract translation: 为了提供用于在客户端设备处渲染对应于所选择的地理区域的地图图像的地图数据，地图服务器生成具有向量描述符的一组基本地图瓦片，每个基地块瓦片根据非 - 用于渲染第一张地图图像的格式。 地图服务器在某些时候向客户端设备提供基本地图图块。 在接收到在客户端设备处呈现所选择的地理区域的特定地图图像的指示时，地图服务器进一步生成一组差异地图块，其指示将对该组基础地图块进行改变，并发送 将不同的地图图块与客户端设备一起使用，以及一组基础地图图块，以呈现所请求的特定地图图像。 客户端设备呈现由差分地图图块定义的新地图视图，而不需要再次预处理基本地图图块中定义的所有特征或元素，这使得由差异地图图块定义的新地图视图的渲染更快 并且在处理能力要求方面效率更高。

公开(公告)号：US09424673B2

公开(公告)日：2016-08-23

申请号：US14277440

申请日：2014-05-14

Applicant: GOOGLE INC.

Inventor： Daniel Otero ,  Brian Cornell ,  Jennifer Maurer ,  James Darpinian

IPC: G06T11/20 ,  G06T11/60 ,  G01C21/36

CPC classification number: G06T11/60 ,  G01C21/367 ,  G06T11/20 ,  G06T2210/08

Abstract: A map server generates a set of base map tiles having vector descriptors, each indicating a geometry of a respective map element, in accordance with a non-raster format for rendering a first map image. The map server provides the base map tiles to the client device. Upon receiving an indication that a specific map image for the selected geographic region is to be rendered at the client device, the map server generates a set of difference map tiles that indicate changes to be made to the set of base map tiles and sends the difference map tiles to the client device for use, along with the set of base map tiles, in rendering the requested specific map image. The client device renders the new map view defined by the difference map tiles without needing to again pre-process all of the features or elements defined in the base map tiles.

Abstract translation: 地图服务器根据用于渲染第一地图图像的非光栅格式生成具有向量描述符的一组基本地图瓦片，每个基本地图瓦片各自指示各个地图元素的几何形状。 地图服务器向客户端设备提供基本地图图块。 在接收到在客户端设备处呈现所选择的地理区域的特定地图图像的指示时，地图服务器生成一组差异地图块，其指示将对该组基础地图块进行改变并且发送差异 将瓷砖与客户端设备一起使用，以及一组基础地图图块，以呈现所请求的特定地图图像。 客户端设备呈现由差异地图图块定义的新地图视图，而不需要再次预处理基本地图图块中定义的所有特征或元素。

公开(公告)号：US20140340419A1

公开(公告)日：2014-11-20

申请号：US13895310

申请日：2013-05-15

Applicant: GOOGLE INC.

Inventor： Daniel Otero ,  Nicholas Lee ,  James Darpinian ,  Jennifer Maurer

IPC: G06T1/00

CPC classification number: G06T1/00 ,  G01C21/3667 ,  G06T9/00

Abstract: To provide map data for rendering map images corresponding to a selected geographic region at a client device, a map server generates a set of base map tiles having vector descriptors, each of which indicates a geometry of a respective map element, in accordance with a non-raster format for rendering a first map image. The map server, at some point, provides the base map tiles to the client device. Upon receiving an indication that a specific map image for the selected geographic region is to be rendered at the client device, the map server further generates a set of difference map tiles that indicate changes to be made to the set of base map tiles and sends the difference map tiles to the client device for use, along with the set of base map tiles, in rendering the requested specific map image.

Abstract translation: 为了提供用于在客户端设备处渲染对应于所选择的地理区域的地图图像的地图数据，地图服务器生成具有向量描述符的一组基本地图瓦片，每个基地块瓦片根据非 - 用于渲染第一张地图图像的格式。 地图服务器在某些时候向客户端设备提供基本地图图块。 在接收到在客户端设备处呈现所选择的地理区域的特定地图图像的指示时，地图服务器进一步生成一组差异地图块，其指示将对该组基础地图块进行改变，并发送 将不同的地图图块与客户端设备一起使用，以及一组基础地图图块，以呈现所请求的特定地图图像。