This gives us more control of the montage. Or: $ python3 pack.py -input_dir ~/Downloads/montage/h480/ -width 2500 -aspect 1.2 -border 5 Running over the fixed height images: $ python3 pack.py -input_dir ~/Downloads/montage/h480/ -width 4800 -aspect 0.5 -border 5 -debug True border BORDER Border around images in px aspect ASPECT Output image aspect ratio, e.g. h, -help show this help message and exit There are some options to consider: $ python3 pack.py -help That doesn’t look the best, but it’s definitely nice it tries to tile things together. Running it like so: $ python3 pack.py -input_dir ~/Downloads/montage/resize480/ -width 2200 -border 10 -debug True Print('writing image output %s.' % args.output) Print('used %d of %d images' % (len(used), len(files))) Im = cv2.imread(orig_file_name, cv2.IMREAD_COLOR) The watermark () function is an inbuilt function in the Python Wand ImageMagick library which is used to transparentized the supplied image and places it over the current image, with the top left corner of the image at coordinates left, top of the current image. Packer.add_rect(r + args.border * 2, r + args.border * 2, rid=i) # NOTE: you could pick a different packing algo by setting pack_algo=., e.g. Print('found %d files in %s' % (len(files), args.input_dir)) Parser.add_argument('-border', help='Border around images in px', default=2, type=int)įiles = sum(], ) Parser.add_argument('-debug', help='Draw "debug" info', default=False, type=bool) Parser.add_argument('-input_dir', help='Input directory with images', default='./') Parser.add_argument('-output', help='Output image name', default='output.png') Parser.add_argument('-aspect', help='Output image aspect ratio, \Į.g. Parser.add_argument('-width', help='Output image width', default=5200, type=int) Parser = argparse.ArgumentParser(description='Montage creator with rectpack') This is a Python package implementing a few algorithms for rectangle packing, a concrete spatial instance of the classic knapsack problem (NP complete!) from computer science: What if there’s a better way to pack the images? However we can still see a lot of annoying whitespace on the right. usr/local/bin/mogrify -path $_480h.jpg"Īlready looking much better, but we have little control over the resulting size of the montage, ImageMagick just does its best job at packing everything. First the script that I run: TEMP_DIRECTORY=$(mktemp -d /tmp/montageXXXXXX) Simply using ImageMagick’s montage it looks something the following. It’s good enough for casual montaging, but it’s definitely suboptimal for packing varying size images.Īll photos from: (thanksgiving%2C-autumn) ImageMagick 6.9.ImageMagick has a built in Montage creating tool. If you need to crop/resize images interactively first, which is often the case, then GIMP is the perfect tool for it, here's a detailed step-by-step: Or for vertical joins, you would want to set a fixed width instead: convert -append image_1.png image_2.png -resize 500x new_image_conbined.png to fix a 500 pixel height on two images joined horizontally: convert +append image_1.png image_2.png -resize x500 new_image_conbined.png You can fix the height for all of them with the -resize option, e.g. Use -resize if the images don't have the same width/height (See ImageMagick Examples: Montage, Arrays of Images.) Without -tile 1x, it would join the images like +append, defaulting to -tile x1 (any number of columns on one row). We're using 1x (exactly one column with any number of rows) here to get the same effect as -append. Tile follows the format columns× rows, but either side may be missing and montage will figure out how to meet the constraints. montage -mode concatenate will glue the input images together like the append option and -tile 1x controls the layout to be applied. To get finer control over the layout, we would need the montage tool. (See ImageMagick: Command-line Options.) montage Note that -append concatenates all images vertically, creating one column with n rows,Īnd +append concatenates horizontally, creating one row with n columns. convertįor simple concatenation in a single row or column, the append option of the convert tool is sufficient. Will also create a file out.jpg that contains a vertical concatenation of the source images. Or: montage -mode concatenate -tile 1x in-*.jpg out.jpg You can use -append (instead of +append) for vertical paste-up. In order to have specific files appended, or skip numbers instead of getting the full "glob", you can mention the input files explicitly and put the append command afterwards convert in-1.jpg in-5.jpg in- N.jpg +append out-in1-plus-in5-and-in N.jpg Named in-.jpg: convert -append in-*.jpg out.jpg
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