Map BMP image conversion latitude and longitude coordinates and reality

bmp map Pictures

A map of the bmp picture (above latitude and longitude coordinates), how to find the latitude and longitude based on the realities on the image at that point, and that point is the center of the display picture. This problem has troubled me for a long time that he is difficult to solve, please know that taught me extremely grateful ~ ~

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Pictures can not pass the start, this is the interception of bmp image maps, artwork too
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The latitude and longitude of the upper left corner of each figure is certainly determined.
And at different levels of the map, the four boundaries Bounds also determined.
Then according to the given latitude and longitude of each figure and Bounds, will be able to determine on which map.
Then according to the diagram to determine the latitude and longitude of the upper left corner, you can calculate the upper left corner of the given latitude and longitude and latitude offset.
According to this offset, the offset into the screen.
According to the offset screen, you can achieve your say.


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reference to the second floor a105865708 reply:

latitude and longitude of the upper left corner of each figure is certainly determined.
And at different levels of the map, the four boundaries Bounds also determined.
Then according to the given latitude and longitude of each figure and Bounds, will be able to determine on which map.
Then according to the diagram to determine the latitude and longitude of the upper left corner, you can calculate the upper left corner of the given latitude and longitude and latitude offset.
According to this offset, the offset into the screen.
According to the offset screen, you can achieve your say.

forehead, that I still do not know how to get inside information BMP, ah, you said there is Bounds those I do not know, be able to speak simple point it ~ Thank you ~
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The reply was deleted administrator at 2013-09-27 15:46:52

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Give examples of it, I am also considering this; no idea
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The latitude and longitude of the upper left corner of each graph with four boundaries to produce maps of the time is determined. You can learn about the principles of drawing tools as well as cutting plans.