![]() Click on an option to get more details about how that option works. The identify command recognizes these options. You can find additional examples of using identify in Examples of ImageMagick Usage. Here is a special define that outputs the location of the minimum or maximum pixel of the image: identify -precision 5 -define identify:locate=maximum -define identify:limit=3 image.png Here we display the image texture features, moments, perceptual hash, and the number of unique colors in the image: -> identify -verbose -features 1 -moments -unique image.png The depth and dimensions of a raw image must be specified on the command line: -> identify -depth 8 -size 640x480 image.raw To get the print size in inches of an image at 72 DPI, use: -> identify -format "% by % inches" document.png Note, the image signature is generated from the pixel components, not the ima Next, we look at the same image in greater detail: -> identify -verbose rose.jpgįormat: JPEG (Joint Photographic Experts Group JFIF format) Rose.jpg JPEG 70x46 70x46 0 0 8-bit sRGB 2.36KB 0.000u 0:00.000īy default, identify provides the following output:įilename image-format widthxheight page-widthxpage-height x-offset y-offset colorspace user-time elapsed-time ![]() To get started, lets identify an image in the JPEG format: -> identify rose.jpg We list a few examples of the identify command here to illustrate its usefulness and ease of use. See Command Line Processing for advice on how to structure your identify command or see below for example usages of the command. Many more attributes are available with the verbose option. ![]() The information returned includes the image number, the file name, the width and height of the image, whether the image is colormapped or not, the number of colors in the image, the number of bytes in the image, the format of the image (JPEG, PNM, etc.), and finally the number of seconds it took to read and process the image. It also reports if an image is incomplete or corrupt. This gives us more control of the montage.The identify program describes the format and characteristics of one or more image files. 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) 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,-autumn) ImageMagick has a built in Montage creating tool.
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