Transform question.
Posted: 2012-03-22T13:19:03-07:00
Hello, I found hardships using photoshop to do this kind of transformation/desortion of big map scheme, so want to ask if would be any solution coming from ImageMagick. I need to transform whole map.
I have created a big aerial photo of my country and I want to overlap it with schemes of maps, which contain marks of airports. Problem is that for some reason these maps do not match exactly to the aerial photos taken from Google. For this task I take as a demo one of these maps and I made there some drawings that shows the measure of distortion needed:
First image:
http://www.uploadup.com/di-XRS1.jpg
The green line in area which is OK. At this place no transform is needed. This area must stay untouched by the transform effect.
The red line shows rough direction (estimated direction) of the desortion. The begin shows the place that needs to be placed for some distance.
More detail here:
http://www.uploadup.com/di-OP27.jpg
The big orange arrow shows the area pointing to digit 0, as I wanted to say that in this strip of the area 0 "pressure" should be applied.
The next arrows have different meaning. The little green arrows shows the direction of pressure and the big orange numbers shows "how much" the place would be shifted with the transform effect.
I also added green lines, which signify levels of movement. By the bottom green line is just a little shift (0,25). When you move to next green line, the distance of the airports by this line are more inaccurate, but not so much yet, so here number 0,3. Third green line has bigger distance, 0,5. Close to to top green line there is about 1.0. These are just number which I tried to illustrate how big is the shift. No units to the numbers.
My problem is, that Photoshop (which I have) cannot do such transform, because you can specify central point, and then you can resize whole image, or just its width or just its height. The image above which I made, shows the differences between airports drawn on one map, and where they should be shifted during transform effect. I don't know how this differences was created, but probably author of the map used different source if map then me. Has IM some solution that could help in this situation?
I have created a big aerial photo of my country and I want to overlap it with schemes of maps, which contain marks of airports. Problem is that for some reason these maps do not match exactly to the aerial photos taken from Google. For this task I take as a demo one of these maps and I made there some drawings that shows the measure of distortion needed:
First image:
http://www.uploadup.com/di-XRS1.jpg
The green line in area which is OK. At this place no transform is needed. This area must stay untouched by the transform effect.
The red line shows rough direction (estimated direction) of the desortion. The begin shows the place that needs to be placed for some distance.
More detail here:
http://www.uploadup.com/di-OP27.jpg
The big orange arrow shows the area pointing to digit 0, as I wanted to say that in this strip of the area 0 "pressure" should be applied.
The next arrows have different meaning. The little green arrows shows the direction of pressure and the big orange numbers shows "how much" the place would be shifted with the transform effect.
I also added green lines, which signify levels of movement. By the bottom green line is just a little shift (0,25). When you move to next green line, the distance of the airports by this line are more inaccurate, but not so much yet, so here number 0,3. Third green line has bigger distance, 0,5. Close to to top green line there is about 1.0. These are just number which I tried to illustrate how big is the shift. No units to the numbers.
My problem is, that Photoshop (which I have) cannot do such transform, because you can specify central point, and then you can resize whole image, or just its width or just its height. The image above which I made, shows the differences between airports drawn on one map, and where they should be shifted during transform effect. I don't know how this differences was created, but probably author of the map used different source if map then me. Has IM some solution that could help in this situation?