How to Import an TIF image into CAD? - 未名空间MITBBS历史存档

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How to Import an TIF image into CAD?

How to Import an TIF image into CAD?# Environmental - 环境科学与工程

j*w2008-02-29 08:02

1 楼

I wanna import some TIF images (with TFW file) into CAD by using an autolisp
application named Tifin. It works fine for images obtained before 2002.
However, for images generated after 2005, it seems that the Tifin
application cannot import images at the right spots and scales. I wonder
anyone on this forum has ideas on solving this issue. Thank you.

j*w2008-02-29 08:02

2 楼

在TFW 文件中给出的是左上角点的x,y值，CAD中是左下角的点做为插入点，要根据
pixel计算一下。
好像起初要设定cad的坐标。不知道有没有帮助。

autolisp

【在 j*w 的大作中提到】

: I wanna import some TIF images (with TFW file) into CAD by using an autolisp
: application named Tifin. It works fine for images obtained before 2002.
: However, for images generated after 2005, it seems that the Tifin
: application cannot import images at the right spots and scales. I wonder
: anyone on this forum has ideas on solving this issue. Thank you.

j*w2008-02-29 08:02

3 楼

Thanks. Could you eleaborate how to calculate the inserting point in CAD
using pixels? Also, there are scaling issues, which possibly also affected
by pixel. One interesting thing is that I can import the images (with TFW
file) into ArcGIS without any problem.

m*l2008-02-29 08:02

4 楼

If you have Civil 3D/Map 3D, the easiest way is to use civil 3D to import
the TIF. Then open it in AutoCAD.
Otherwise, you have to do the math. Read the TWF file format in ArcGIS help
and the rest is just simple coordinate transformation.