Resize an image to the white area of ​​the mask

[ovazquez]

Hello
I have the following problem: I have an furniture image to which it applies a texture on a piece of furniture using a mask, the dimensions of the two images and the mask are the same. But I want that the texture image to be resized and fit the white area of ​​the mask, how could I do this?

[GeeMack]

I have the following problem: I have an furniture image to which it applies a texture on a piece of furniture using a mask, the dimensions of the two images and the mask are the same. But I want that the texture image to be resized and fit the white area of ​​the mask, how could I do this?

That sounds like a pretty simple task for ImageMagick, but the specifics might be different from one version to another or on some particular operating system or platform. Please check the suggestions for posting questions on THIS page, then let us know what sort of system you're running on, what version of IM you're using, and provide a couple sample images of what you're trying to do. It's likely you'll get some pretty good solutions here.

[fmw42]

I am really unclear about what you want to do. You say you already have a texture image and mask image that match. Why do you need to resize the texture image? If the white area of the mask does not fit, is it really just a resize and not a warp/distortion. If a simple resize, then you likely need to measure at least 3 corresponding points on the texture image and the mask white are and use -distort Affine.

See http://www.imagemagick.org/Usage/distorts/#affine

For novices, see

viewtopic.php?f=1&t=9620
http://www.imagemagick.org/script/comma ... essing.php
http://www.imagemagick.org/Usage/reference.html
http://www.imagemagick.org/Usage/

[ovazquez]

Well, sorry for my bad english and short description.
Im using:
- windows 8.1 SO
- ImageMagick 6.9.8 Q8
- PHP API, module imagick v3.4.3
- Wamp server 3.0.6 running in local

Php script:
$dir = __DIR__;
$mueble = new Imagick($dir . "/mueble.jpg");
$texture1 = new Imagick($dir . "/texture6.jpg");
$mask = new Imagick($dir . "/a_mask.png");
$mask->negateimage(true);
$mueble->setimageclipmask($mask);
$mueble->compositeimage($texture1, Imagick::COMPOSITE_OVERLAY, 0, 0);
$mueble->writeImage($dir . "/mueble1.jpg");

I want that texture6.jpg to be resized and adapted to the size of the white area in the mask a_mask.png to achieve a better visual appearance

mueble.jpg


texture6.jpg


a_mask.png


Result -> mueble1.jpg


Expected result -> mueble2.jpg (sorry bad photoshop)


Please, you could help me. I'm new using ImageMagick and I've tried to find a solution but I can not. Thanks

[fmw42]

None of your images show up. Perhaps you have them in a private account that needs a username and password? Please try again.

[ovazquez]

Sorry, make right click over image and select Open in new tab

[fmw42]

You are using dropbox. But you have not set the images to be shareable. I can see them, but cannot download them. Please fix and edit your links if necessary. Or try posting to some other free hosting service that does not make you sign in to access them.

From what I see, you need to draw a mask for each surface of the sofa. Then you need to perspectively transform the texture to a similar perspective, then compose than perspective texture onto the sofa using the mask to limit it. I know of no image processing tool that does that automatically. However, there are probably 3D modeling and texture mapping tools that might.

If your texture image is not big enough for the given surface in the sofa image, then you can try to tile it out to make it larger so that it fills the full mask area. You need to tile it out until it is big enough to cover the mask are at the scale and perspective you want.

See http://www.imagemagick.org/Usage/canvas/#tile and my unix bash shell script, tiler, at my link below.