Legacy ImageMagick Discussions Archive

I found it out by simply trying the effect of each number.

These numbers are organised as original position to target position x1y1 -> x2y2
with the coordinates: left-top, left-bottom, right-top, right-bottom,
where each number is in coordinates of pixels (unfortunately).

So what I need is ...

The co-ordinate system changed at some point so the version can have an effect.

In your case the blocks of numbers are the original co-ordinates in x y and the new co-ordinates in x y.

Coordinates in pixels ? That would be a big problem. I want to let it run in a loop where all images have ...

I want to do perspective projections, but I completely fails to understand the coordinates used.

This code does nothing

convert input.jpg -matte -virtual-pixel transparent -distort Perspective "0,0,0,0 0,90,0,90 90,0,90,0 90,90,90,90" output.png


This shrinks the image on the right side ...

The single quotes must be replace by double quotes. Though I do not understand why convert behaves different on windows ...

I want to apply perspective transformations to images.

I tried the example from http://www.imagemagick.org/Usage/distorts/#perspectiveprojection :

convert inu01.jpg -matte -virtual-pixel transparent -distort Perspective '0,0,0,0 0,90,0,90 90,0,90,25 90,90,90,65' inu01-p.png


on windows 7 but it ...