Legacy ImageMagick Discussions Archive

Hi friends,

It seems that ImageMagick on Macports is at version 6.9.0-0_1 and has been there for some time. Are there plans to update the port?

Thanks!
J

Hi dlemstra, I'd be happy to fund your time. Feel free to contact me privately to discuss further if you'd like! We have other things we'd like to develop and release and are hoping to evolve a lasting relationship with someone close to the code. Thank you!! : )

We'd like to fund the support of layers and layer masks in TIFF format, with PSD being a desirable footnote. We understand this is not a trivial request! But we are highly motivated. Is anyone interested in taking this on? I understand this may involve efforts for layer support in general as well. - J

Interesting! I am always learning, and you are an excellent mentor.

Are you aware of this paper?

http://phash.org/docs/pubs/thesis_zauner.pdf

It's what, you guessed it, Phash.org tools is based on.

J

I would suppose this cannot be used yet for CBIR, since one might have to calculate the compare metric for too many images too swiftly. I am puzzled how this has been solved by others. I suspect the solution is somehow to output a sortable string where clusters are more similar to each other, and pe...

Hi there, and big thanks as always to the developers and community. I'm writing to check on the overall support of transparency in PSD/PSB/Adobe TIFFs. Last I knew, IM did not support recognition of background transparency in these file types and multiple alpha channels were also not handled properl...

In your example, you return a value of 118.937. http://www.fmwconcepts.com/imagemagick/phashcompare/index.php Does that mean it's more similar than a return of 100? I have no way to interpret the value that I can find. I read the link you provided, but apparently I don't understand this at your leve...

Fred, this is exciting and wonderful work! One question: how to interpret the phashcompare metric? I don't see anywhere where it's meaning is conveyed.

Thanks so much!
J

Snigbo, Fred, thanks as always for the generosity of your sharing. more specifically, i am making a palette image using the -filter box function, and want to make that palette image use only the colors in the infile. my existing code: convert infile.ext +dither -colors 17 -unique-colors -filter box ...

Is there any way to quantize, but only include color values actually present in the image? For example, not quantize to the top 16 most predominant colors, as they may all be nearly white, or create averaged or otherwise calculated values that may not actually be in the source image - but to quantiz...

thanks so much fred, i have already tried this without success, which i am measuring right now by visual reconciliation with Photoshop 14.2. i'll continue my work; perhaps Photoshop's rendering is suboptimal.

J

this is very exciting and valuable work! i mean only to support you with my questions and suggestions. i know also this is very fresh. i think for CBIR, we are talking about sorting by visual similarity, and with comparison, it's about comparing two images. they are separate use cases. for use in CB...

i found this post: http://stackoverflow.com/questions/11443725/imagemagick-reduces-colorspace-to-gray and tried the truecolor argument, and it worked in at least gaining RGB output. convert input.ext -separate -type truecolor channel_%d.jpg but my final goal eludes me for now. i may just go with sRG...

forgive my ignorance, but i assumed the perceptual hash would be something like an image-specific signature of alphanumerical characters that would sort along similarities in a found set. otherwise i don't know how CBIR would work with this, when thousands to hundreds of thousands of images are invo...

i'm running the latest macport, which is 6.8.8-3_1. to be more precise, my desire is to keep the source profile in the channel images, and retain the source colorspace (i.e., no color conversion, or at least one without visual effects). that way an ICC-savvy rendering of the channel images will be f...