Legacy ImageMagick Discussions Archive

Hi, I have to border large images. The images are about 5000x30000 Pixel an I have two jobs to do: 1) add a very small (3 pixel) line at the bottom of the page. I think a -splice 0x10 with gravity south should do this, but is this the fastest way? 2) add two small (100 pixel) lines left and right bu...

Hi Anthony, I have to deal with designers... They have designed the image with photoshop in cmyk because the want to print it on a cmyk-printer in extreme high quality. I guess if I convert the colours twice the result will not satisfy the trained eyes of these experts... Any other way without messi...

Hi, I want to label a cmyk image with a label of any color. When I try to label a dark image (with black spots) with a white label, I get an unpleasant result because "white" is like "nothing" in cmyk and black is like "all" in cmyk. I tried labelling a new png with tra...

Yes, I am convinced!
I will not use the php-imagemagick.
I will store the Image in MPC on a ramdrive and use the console imagemagick commands to do my modifications.
But it was worth a thought

Greetings
Roland

Another idea... When using php to use image magick I load the image with Imagick::readImage then I do my modifications and then I write it back to disk with Imagick::writeImage Would this work as well? Even faster? (because the Image is kept in ram - is it really?) I have to interact with a user any...

Just tried it! Great, converting the Tiff file into an MPC, which is written into a ramdisk is faster then any other action. Using this ram located MPC file is faster than anything I have ever experienced in image processing before. Great. If no one tells me a better way of keeping an image in ram, ...

Reading the MPC has near-zero overhead.

True, but writing and reading 4GB from a harddisk is still taking unnecessary seconds.
I have plenty of Ram, I just wonder if I just write the MPC file to an 8GB ramdisk...

What do you think?

Roland

Hi, I have to perform multiple action with one large image file (the compressed Tiff is >1GByte) Can I load the image into ram and do several actions with this one file interactive? I know I can perform several actions with image sequence operators, but I have to interact with a user in between via ...

Thanks, this is what I wanted to know.
9 exa pixels on a 64bit system and the sky (ok, the system Ram) is the limit...
Great!

Roland

Hi, I have to do a couple of batch jobs with huge files (Tiff : 500MByte - 1GB). In detail I have to crop it into pieces and to append boarders and Pictures on all four sides on all of the tiles. Is there a fastest file format to use for this jobs? The original file format will be an lzw compressed ...

Hi, I want to use ImageMAgick tools to cut large (really large!) images into pieces. This is intend to cut an image into stripes for a wallpaper. The image size will be around 500.000 x 1.000.000 pixel. Let's say I have a server with 32GByte of ram an plenty of time, can I use the crop command to do...