Legacy ImageMagick Discussions Archive

Hi, snibgo.

snibgo wrote: ↑2017-10-13T10:23:28-07:00 Good stuff. See also the SVG 1.1 standard, which contains many simple examples.

Yes, that is another reference that, although I still have not read yet, I was also taking it into account.

Thanks for your help.

Kind regards,
Daniel

Hi, snibgo. ... to generate an SVG image with editable text with imagemagick... No, that can't be done. IM processes raster images, so your final image won't have editable text, but pixels. SVG is a text format that represents vector. Inkscape is a good place to start. Create a simple example graphi...

Hi all! I am developing a script whose goal is to process a CSV file and generate an SVG image with color text from the text read in that CSV file. For this I am using "convert" and Pango Markup Language to color the text read from the CSV file. On this way I get an EPS file which I then c...

Hi, Fred. I would not use the floor, since there is perspective distortion, since the floor is not perpendicular to the camera look direction. As the lines appear curved on the floor, I thought it might also be a distortion of the camera. I would recommend that you paste a printed grid on the wall a...

Hi, snibgo. Photographing an interior wall, flat-on to that wall, in a rectangular room, is easy: 1. Put camera on a tripod, pointing towards the wall. 2. Measure the height of the centre-line of the lens above the floor. 3. Measure the horizontal distance from the centre-line of the lens to the wal...

Hi, snibgo. Your camera isn't square-on to the wall. It should be rotated slightly right, which is clockwise looking down on a vertical axis. You would still have perspective, of course, but it would be what is called "single-point" perspective. Line that are horizontal, moving away from t...

Hi, snibgo. If you tilt the camera up, in the photo the corners of the walls will remain straight but will tilt inwards. If you take a photo of a tall building from outside, tilting the camera up, the edges will tilt inwards. If you stand on a bridge over a railway and photograph it, the tracks will...

Hi, Fred. see http://www.imagemagick.org/Usage/distorts/#barrel in the section for having two sets of coefficients, one for x and one for y. Ah, it's the same link mentioned in the previous post. So you were referring to add these two additional values to the three already used coefficients. Do you ...

Hi, snibgo. In that photograph, most lines (if extended) would pass through or near the centre of the image. They are radial lines, which are not bent by barrel/pincushion distortion. Perspective is a different type of distortion, which isn't a lens problem, and doesn't bend straight lines. I am not...

Hi, Fred, Thanks for your answer. One thought is that you need slightly different coefficients for X than for Y. Do you mean to the first two values, I suppose, right? Because ImageMagick documentation uses X and Y as other parameters. Seeing again the transformed image, I am also noticing on the ri...

Hi, Bonzo. Thanks for your reply. Below I put the references of the photos mentioned in the previous post: Rotated image: http://fotos.sysadminhaiku.com.ar/_data/i/upload/2016/05/18/20160518115109-03b45b7a-me.jpg Rotated image processed: http://fotos.sysadminhaiku.com.ar/_data/i/upload/2016/05/18/20...

Hi all! This is my first message on the forum. I'm trying to correct the distortion in a camera Genius WideCam 1050 [1]. Since I need to use this camera with the angular amplitude vertically, to correct the image distortion I used the following procedure. 1) I've rotated the image 90 degrees clockwi...