Search found 5 matches

by pospiech
2012-09-09T04:48:59-07:00
Forum: Users
Topic: perspective projection corrdinates
Replies: 7
Views: 12289

Re: perspective projection corrdinates

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: convert ...
by pospiech
2012-09-09T02:51:03-07:00
Forum: Users
Topic: perspective projection corrdinates
Replies: 7
Views: 12289

Re: perspective projection corrdinates

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 ...
by pospiech
2012-09-09T01:04:23-07:00
Forum: Users
Topic: perspective projection corrdinates
Replies: 7
Views: 12289

perspective projection corrdinates

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 convert input ...
by pospiech
2012-09-09T01:01:35-07:00
Forum: Users
Topic: perspective projection example fails
Replies: 2
Views: 5777

Re: perspective projection example fails

The single quotes must be replace by double quotes. Though I do not understand why convert behaves different on windows ...
by pospiech
2012-09-09T00:45:33-07:00
Forum: Users
Topic: perspective projection example fails
Replies: 2
Views: 5777

perspective projection example fails

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 fails ...