Methods and apparatus for navigating an image
First Claim
1. A method, comprising:
- receiving at a client terminal a plurality of pre-rendered images of varying zoom levels of a roadmap;
receiving one or more user navigation commands including zooming information at the client terminal; and
blending two or more of the pre-rendered images to obtain an intermediate image of an intermediate zoom level that corresponds with the zooming information of the navigation commands such that a display of the intermediate image on the client terminal provides the appearance of smooth navigation,wherein at least some roads of the roadmap are scaled up and/or down in order to produce the plurality of pre-determined images, and the scaling is at least one of;
(i) physically proportional to the zoom level; and
(ii) non-physically proportional to the zoom level, and wherein the non-physically proportional scaling may be expressed by the following formula;
p=d′
·
za, where p is a linear size in pixels of one or more elements of the object at the zoom level, d′
is an imputed linear size of the one or more elements of the object in physical units, z is the zoom level in units of physical linear size/pixel, and a is a power law where a≠
−
1.
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Accused Products
Abstract
Methods and apparatus are contemplated to perform various actions, including: zooming into or out of an image having at least one object, wherein at least some elements of the at least one object are scaled up and/or down in a way that is non-physically proportional to one or more zoom levels associated with the zooming, and wherein, for example, the non-physically proportional scaling may be expressed by the following formula: p=d′·za, where p is a linear size in pixels of one or more elements of the object at the zoom level, d′ is an imputed linear size of the one or more elements of the object in physical units, z is the zoom level in units of physical linear size/pixel, and a is a power law where a≠−1.
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Citations
17 Claims
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1. A method, comprising:
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receiving at a client terminal a plurality of pre-rendered images of varying zoom levels of a roadmap; receiving one or more user navigation commands including zooming information at the client terminal; and blending two or more of the pre-rendered images to obtain an intermediate image of an intermediate zoom level that corresponds with the zooming information of the navigation commands such that a display of the intermediate image on the client terminal provides the appearance of smooth navigation, wherein at least some roads of the roadmap are scaled up and/or down in order to produce the plurality of pre-determined images, and the scaling is at least one of;
(i) physically proportional to the zoom level; and
(ii) non-physically proportional to the zoom level, and wherein the non-physically proportional scaling may be expressed by the following formula;
p=d′
·
za, where p is a linear size in pixels of one or more elements of the object at the zoom level, d′
is an imputed linear size of the one or more elements of the object in physical units, z is the zoom level in units of physical linear size/pixel, and a is a power law where a≠
−
1. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method, comprising:
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receiving at a client terminal a plurality of pre-rendered images of varying zoom levels of at least one object, at least some elements of the at least one object being scaled up and/or down in order to produce the plurality of pre-determined images, and the scaling being at least one of;
(i) physically proportional to the zoom level; and
(ii) non-physically proportional to the zoom level, wherein the zoom levels and the scaling of the pre-rendered images are selected such that respective linear sizes in pixels p of a given one or more of the elements of the object do not vary by more than a predetermined number of pixels as between one pre-rendered image and another pre-rendered image of higher resolution;receiving one or more user navigation commands including zooming information at the client terminal; blending two or more of the pre-rendered images to obtain an intermediate image of an intermediate zoom level that corresponds with the zooming information of the navigation commands; and displaying the intermediate image on the client terminal. - View Dependent Claims (8, 9, 10, 11)
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12. A method, comprising:
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receiving at a client terminal a plurality of pre-rendered images of varying zoom levels of at least one object, at least some elements of the at least one object being scaled up and/or down in order to produce the plurality of pre-determined images, and the scaling being at least one of;
(i) physically proportional to the zoom level; and
(ii) non-physically proportional to the zoom level, wherein the non-physically proportional scaling may be expressed by the following formula;
p=d′
·
za, where p is a linear size in pixels of one or more elements of the object at the zoom level, d′
is an imputed linear size of the one or more elements of the object in physical units, z is the zoom level in units of physical linear size/pixel, and a is a power law where a≠
−
1;receiving one or more user navigation commands including zooming information at the client terminal; blending two or more of the pre-rendered images to obtain an intermediate image of an intermediate zoom level that corresponds with the zooming information of the navigation commands; and displaying the intermediate image on the client terminal. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification