I am creating an image having dimension 357x357 using imagemagick and then creating 100 tiles using crop command but it only crops first 10 images
here are the commands
convert -size 357x357 xc:skyblue 1.jpg
convert -crop 10x10# 1.jpg 1-slices.jpg
first command creates image with 1.jpg having dimension 357x357 and second command is for creating 100 tiles but it only creates 10 tiles and returns.
Here are the tile names it created
1-slices-0.jpg ......... 1-slices-9.jpg
Why it is not generating 100 tiles?
Any help will be really appreciated.
The # applies the evenly spaced crop along one dimension (apparently). Best thing I can think of is to isolate each plane into a separate -crop command
convert 1.jpg -crop x10# -crop 10x# 1-silces-%d.jpg
Related
I am trying to crop and swap different parts of a big 800x800 image and re-create 800x800 image using imagemagick with this command.
magick mogrify titli.gif -crop 2x4# +repage -reverse -append -path converted titli.gif
my problem is "-append" creates tall image (400x1600) & "+append" creates wide image (3200x200)
How can I get a large image of original size 800x800 but with cropped and swapped (reversed) parts set in "mosaic or tiled" style...
If I understand the question, you shouldn't need "mogrify" to do that. Just "magick" should accomplish that task.
It looks like you'll have to crop the image into 8 pieces, reverse them, and "-append" them vertically as you've done.
Then after that, and in the same command, you'll need to crop that result in half vertically and "+append" those two pieces horizontally to get the 800x800 output.
This example command shows how it works...
magick in.png -crop 2x4# -reverse -append -crop 1x2# +append out.png
If you're doing any more operations within the same command you'll probably want to use "+repage" after the "+append" to reset the image geometry back to WxH+0+0.
I am trying to use ImageMagick to place one image (Poseidon_map01.jpg in my code below) in the top-left corner of another (zzOcean Backdrop.png) then crop the resulting image down to 1280x720.
This is the command I currently have:
".\ImageMagick-7.0.8-12-portable-Q16-x64\magick.exe" ".\Raw\zzOcean Backdrop.png" ".\Raw\Poseidon_map01.jpg" -gravity northwest -composite -crop 1280x720>! +repage ".\1280x720\Poseidon_map01.jpg"
The problem is that this command is cutting the composited image into 1280x720 pieces then saving all of those pieces with the names Poseidon_map01-1.jpg to Poseidon_map01-48.jpg. Poseidon_map01-1.jpg is the top-left corner of the composited image and this is the piece that I want to keep. I want to discard the rest of the composite. Does anyone know what I have to change in my command to make this happen? Thanks.
In Imagemagick crop, if you do not include the +X+Y offsets, it will crop as many pieces as it can given the size you specify. That is called tiled cropping. So use -crop WxH+X+Y>!
See https://imagemagick.org/Usage/crop/#crop
".\ImageMagick-7.0.8-12-portable-Q16-x64\magick.exe" ".\Raw\zzOcean Backdrop.png" ".\Raw\Poseidon_map01.jpg" -gravity northwest -composite -crop 1280x720+0+0>! +repage ".\1280x720\Poseidon_map01.jpg"
I am not a windows user and syntax may vary some. You may need to escape the > or ! with ^ on windows or put double quotes around the whole crop set of arguments. Keep that in mind, if this does not work. See https://imagemagick.org/Usage/windows/
I'm trying to crop an image into a bunch of 256x256 tiles (with the right-most and bottom-most images less than 256 pixels due to the remainders), but ImageMagick always generates images that are 1x1.
I use this command (Windows 7 command prompt):
convert WBS.png -crop 256x256 +repage +adjoin output\WBS_%02d.jpg
After cropping the following message is displayed:
convert: geometry does not contain image `WBS.png' # warning/transform.c/CropImage/589.
After cropping, the output folder contains 1634 jpg files, all of which are 1 x 1 pixel. The source image is 7218x7650.
Suggestions? I'm sure I'm making some blatant mistake, but I don't know what it is.
This can happen if the origin of the image is not at 0,0. In that case, using +repage before processing the image should do the trick, i.e.
convert WBS.png +repage -crop 256x256 +repage +adjoin output\WBS_%02d.jpg
See also the documentation of the -crop option.
i'm having a large jpg, which has a resolution of x * 256 / x * 256. I want to cut this image into 256x256 tiles with a naming convention {zoom}-{x}-{y}.jpg. In the past i've used ZoomifyExpress Converter which does the cutting and zooming. I also want 6 different zoom levels. I've started so far with this command:
convert example.jpg -crop 256x256 +gravity -set filename:tile
./tiles/%[fx:page.x/256]-%[fx:page.y/256] %[filename:tile].jpg
This produces a lot of x-y.jpg tiles.I don't know how i can add different zoomlevels. I'm relativly new to ImageMagick and this feels like a basic thing to do. Hopefully somebody can help me out. Thanks in advance.
I found the solution:
I just resize the image to the appropriate size and then crop it. The first number in the filename is the zoom level.
convert example.jpg -resize 256x256 -crop 256x256 -set filename:tile
./tiles/0-%[fx:page.x/256]-%[fx:page.y/256] %[filename:tile].jpg
convert example.jpg -resize 512x512 -crop 256x256 -set filename:tile
./tiles/1-%[fx:page.x/(256)]-%[fx:page.y/(256)] %[filename:tile].jpg
.. and so on until i reach the highest resolution.
I'm developing a script to download images from tile-based image-hosting.
I downloaded tiles using wget and trying to use montage to compine them.
The problem is that I've got tiles with different sizes (last tile in row is more narrow than the others). Here is combine command:
montage $temp/*.jpg -tile $maxcolumn"x"$maxrow -geometry -1-1 -quality 100% merged.jpg
ImageMagick aligns tiles by grid and produces this image (see right and bottom sides).
image http://leftparagraphs.ru/!/merged.jpg
How do I fix this with montage?
Fixed by specifying "-mode Concatenate".
Also I have to run another instance of convert after montage to "-trim" resulting image.
This solution did not work for me. To combine two different height images into one, I first used the identify command to get the height of the largest image (1280 pixels):
identify large.jpg
Then I used the following command to resize the smaller image and combine it side by side with the larger one:
montage -tile 2x1 -geometry +0+0 small.jpg"[x1280]" large.jpg output.jpg